1. General data

Professor Dr. Stephan Robbert Gradstein was born in The Netherlands in 1943. He attended the University of Utrecht, where he obtained a Ph.D. in botany in 1975. For his dissertation "A taxonomic monograph of the genus Acrolejeunea (Hepaticae)" he was awarded the "Jesse M. Greenman Award" of the Missouri Botanical Garden, U.S.A., for best dissertation in plant systematics.

Professor Gradstein has been on the teaching staff in the Botany Department of the University of Utrecht since 1969 and has been a Curator of the Herbarium of that university since 1976. Furthermore, he has held positions as a graduate research assistant at the University of Cincinnati, U.S.A. during 1970-71, as a Fullbright Fellow at the University of Colorado in 1976, and as a Professor in Tropical Botany at the University of Michigan during 1986-87. In November 1995 followed his appointment as Professor of Botany and Director of the Herbarium and Botanical Garden at the University of Göttingen.

Professor Gradstein's research interest is the flora and vegetation of the Tropics, especially of Tropical America. His research speciality are liverworts. Professor Gradstein had done fieldwork in all parts of Tropical America, has directed many botanical and ecological projects in the area, especially in the Andes and in the Guianas, has published more than 200 research papers including several books, and has directed numerous dissertations and MSc theses, including those of several students from tropical America. Together with Drs Steve Churchill (Missouri Bot. Garden) and Noris Salazar (Smithsonian Tropical Research Institute) he is author of the "Guide to the Bryophytes of Tropical America" (2001). He has taught field courses in Puerto Rico, Jamaica, Panama, Colombia, Ecuador, Brazil and Indonesia. Since 1996 he is heading a research group in tropical botany at the University of Göttingen.

Professor Gradstein is an Editor of Flora Neotropica and a Deputy-Director of the Organization for Flora Neotropica (UNESCO). He is a member of the Academy of Sciences of Göttingen, and a Founder and President of the International Association of Bryologists. For his botanical research Professor Gradstein was awarded the Candolle Prize of the Societé de Physique et d'Histoire Naturelle de Genève in 1994.

Further data

Name: Stephan Robbert Gradstein
Born: 3l October 1943, The Netherlands
Office: Albrecht von Haller Institute of Plant Sciences, University of Göttingen, Untere Karspüle 2, 37073 Göttingen, Germany, Tel. (0)551-392229/395732, Fax (0)551-4062329, Email: sgradst@gwdg.de
Marital status: Married to Claritza Eugenia Serna Gil
Citizenship: Dutch
Languages: Fluent in Dutch, Spanish, English, German and French; working knowledge of Portuguese
Member: Rotary International

Educational background

1969 M.Sc. in biology, University of Utrecht.
1970-71 Graduate school, University of Cincinnati, U.S.A.
1975 Ph.D. in botany, University of Utrecht.

Summary of employment

1970-1971 Graduate research assistent, University of Cincinnati
1971-1995 Curator and docent, Herbarium, University of Utrecht
1976 Fullbright fellow, Univ. of Colorado, Boulder
1979 JSPS Fellow, National Science Museum, Tokyo
1986-1987 Professor of Tropical Botany, Univ. of Michigan
1993 Andrew Mellon Visiting Scientist, Smithsonian Institution, Washington
1995 - Professor of Botany (C4) and Director of the University Herbarium,
University of Göttingen
1997 - Director, Botanical Garden, Univ. of Göttingen
2000 Visiting scientist, Botanical Garden, Rio de Janeiro
2001 - Director, Albrecht von Haller Institue of Plant Sciences, Univ. of Göttingen

Present Position
Professor of Botany (C4) and Director of the Botanical Garden and Herbarium, University of Göttingen, Germany (since 31.10.1995)

Honors

1999 Membership, Academy of Sciences, Göttingen
1999 President, International Asssociation of Bryologists
1994 A.-P. de Candolle Prize (Switzerland)
1993 Research Affiliate, Smithsonian Tropical Research Institute, Panama
1976 Jesse M. Greenman Award (U.S.A.)

Research Interest
Tropical botany, especially tropical America
Systematics and ecology of cryptogamic plants, especially hepatics.

Main areas of field research

Tropical America: Brazil, Colombia, Ecuador (incl. Galapagos Islands), Peru, Bolivia, French Guiana, Guyana, Suriname, Panama, Costa Rica, Mexico, Puerto Rico, Guadeloupe, Dominica
Tropical Asia: Papua New Guinea, Japan, Indonesia (Java, Sulawesi)
Europe: Crete

Research grants

1. German Research Foundation (DFG)

2003-2005 Molecular Phyogeny of Lejeuneaceae, Hepaticae (with Dr. J. Heinrichs). Research assistant: R. Wilson
2003-2005 DFG-Sonderforschungsbereich 552: Stabilität von Randzonen tropischer Regenwälder in Indonesien. Project C2: Plant diversity as a funtion of land use intensity. Research assistants: S. Sporn, Nunik, R. Pitopang.
2003- 2005 DFG-Forschergruppe 416: Funktionalität in einem tropischen Bergregenwald, Süd-Ecuador. Project A4: Cryptogamic plant diversity of the Purdiaea nutans forest in southern Ecuador and its relationship to soil, climate and vegetation structure (with Dr. M. Kessler, Dr. H.J. Sipman, Free Univ. Berlin & Prof. F. Makeschin, Techn. Univ.). Research assistants: N. Mandl, M. Lehnert.
2001-2004 DFG-Forschergruppe 416: Funktionalität in einem tropischen Bergregenwald, Süd-Ecuador. Projekt A5: Diversität, Lebensstrategien und Ökomorphologie kryptogamischer Epiphyten (with Dr. H.J. Sipman & Dr. H. Kürschner, Free Univ. Berlin). Research assistant: N. Nöske.
2000-2003 DFG-Sonderforschungsbereich 552: Stabilität von Randzonen tropischer Regenwälder in Indonesien. Project C2: Structural and functional plant diversity of different land use systems (with Prof. C. Leuschner & Dr. D. Hölscher, Univ. Göttingen and National Herbarium, Leiden). Research assistants: Dr. P. Keßler, R. Pitopang.
2000-2004 Hypsometrischer Wandel naturnaher Bergregenwaldökosysteme in den Yungas (with Prof. G. Gerold, Univ. Göttingen). Research assistant: K. Bach.
1998-2003 Epiphytenvegetation im Kronenraum tropischer Bergregenwälder entlang eines Gradienten anthropogener Zerstörung (with Dr. D. Hölscher & Prof. C. Leuschner, Univ. Göttingen). Research assistant: I. Holz.
1996-2003 Systematisch-monographische Bearbeitung der Gattung Plagiochila (Hepaticae), im Rahmen der "FLORA NEOTROPICA" (with Prof. M. Mues, Univ. Saarbrücken). Research assistants: J. Heinrichs (until 2001), M. Sauer (2001-2003), H. Groth (2002).

2. Volkswagenstiftung

2003-2005 Catalogue of the Plants of Colombia (with Dr. R. Bernal, Univ. Nacional de
Colombia). Six research students.
2000 The Hepaticae and Anthocerotae of Brazil. 6-month research visit to
Botanical Garden of Rio de Janeiro (with Dr. D. P. Costa, Bot. Garden, Rio de Janeiro).

3. Bundesanstalt für Naturschutz, Bonn
1997-2000 TAXLINK: Referenzliste der Moose Deutschlands. F & E Vorhaben FKZ 80805072. Research assistants: Dr. M. Koperski, M. Sauer, W. Braun.

4. European Community
1994-1997 Tropical bryophytes as non-woody bioindicators. With Smithsonian Tropical Research Institute, Panama (Dr. Salazar Allen), Missouri Bot. Garden (Dr. S.P. Churchill), and Ecosystems Inc., Brussels (Dr. G. Raeymaekers).

5. Netherlands Research Foundation (NWO)
1988-1994 Systematics of pyrenocarpous lichens. Research assistant: A. Aptroot.
1989-1991 Plant Collectors of Guyana. Research assistant: R. Ek.
1985-1990 Diversity and ecology of canopy epiphytes in motane rain forests of Colombia (with Prof. A.M. Cleef). Research assistant: J. Wolf.
1981-1985 Systematics of Lejeuneaceae. Research assistant: M.W. van Slageren
1980-1985 Structure and dynamics of Andean Ecosystems of Colombia: ECOANDES project (with Prof. T. van der Hammen). Research assistants: A.M. Cleef, G.B.A. van Reenen.

6. National Geographic Society
1993 Epiphyte diversity in Monteverde Cloud Forest Reserve, Costa Rica (with Dr. N. Nadkarni, U.S.A.)
1992 Endemism in the Chocó, Colombia (with Prof. J.-P. Frahm, Germany)
1976 Botanical inventory of the Galapagos Archipelago (with Prof. W.A. Weber, USA)

7. Smithsonian Institution, Washington
1993 Bryophyte diversity of Pakitza National park, Peru and Barro Colorado Island, Panama (with Dr. N. Salazar Allen, Smithsonian Tropical Research Institute, Panama).
1993 Flora of the Neotropical Páramos (with Dr. J.L. Luteyn, USA)
1991 Bryophyte diversity of Darien National Park, Panama (with Dr. N. Salazar Allen, Smithsonian Tropical Research Institute, Panama).

Professional offices and appointments (* held at present)

1. International
*President, International Association of Bryologists (since 1999)
*Deputy-Director, Organization for Flora Neotropica, UNESCO (since 1987)
*Editor, Flora Neotropica (since 1987)
*Editor, Bryophytorum Bibliotheca (since 1984)
*Associate Editor, Journal of Bryology (since 1990)
*Editorial Board: Candollea, Boissiera, Caldasia
Member: Threatened Species Committee, Int. Union for the Conservation of Nature (IUCN) (1990-2002)
Member: International Committee for Nomenclature of Bryophyta (1981-1994)
Co-founder and Secretary-Treasurer: International Association of Bryologists (1970-1987)

2. The Netherlands
Advisor, Biodiversity program, "Tropenbos Foundation", 1992-1993.
Advisor, Netherlands Foundation for Tropical Research (WOTRO), 1987-1991
Chairman, Netherlands Foundation for Biological Research (BION), Plant Syst. Div., 1984-1989
Vice-President, Royal Dutch Botanical Society, 1980-1983
Editor, Acta Botanica Neerlandica (1980-1983)

Congresses and Symposia organized/chaired (since 1999)

29-30 May 1999 Organizer and Chairman, Hedwig Symposium, Göttingen.
23-30 Jan. 2002 President, XIV World Congress of Bryology, Lucknow, India
19-23 Feb. 2002 Organizer, XV Annual Meeting, Society for Tropical Ecology, Göttingen.
24-25 Feb. 2002 Organizer, Second International Meeting, Global Canopy Programme,
Göttingen.
25 Sept. 2003 Organizer, Workshop on Flora Neotropica, Third International Congress
on Biodiversity and Phylogeny of Plants, Frankfurt
10-18 Jan. 2004 President, XV World Congress of Bryology, Merida, Venezuela
10-12 Sept. 2004 Organizer and Chairman, Second International Symposium on
Molecular Phylogeny of Bryophytes, Göttingen
September 2007 Organizer, Fourth National Congress on Biodiversity and Phylogeny of
Plants, Göttingen

Dissertations (PhD, Dr. rer. nat.) directed

2003 S. Sporn (Univ. Göttingen) - Cryptogamic epiphyte vegetation of cacao plantations and rain forests of Sulawesi, Indonesia
2003- N. Mandl (Univ. Göttingen) - Cryptogamic vegetation of upper montane forests of southern Ecuador in relation to soil, climate and vegetation structure
2003- R. Wilson (Univ. Göttingen) - Molecular phylogeny of the Lejeuneaceae
2003- F. Werner (Univ. Göttingen) - Relict trees as refugia of epiphyte diversity in
montane Ecuador
2003- M. E. Morales P. (Univ. Bogotá) - Monograph of the genus Syzygiella
(Jungermanniaceae)
2002- H. Groth (Univ. Göttingen) - Molecular phylogeny of the genus Plagiochila
2001- J. Uribe M. (Univ. Bogotá) - Monograph of Frullania subgen. Meteoriopsis
2001- A. L. Ilkiu-Borges (Univ. Göttingen) - Monograph of the genus Prionolejeunea
(Hepaticae)
2001- N. Nöske (Univ. Göttingen) - Anthropogenic impact on cryptogamic epiphyte
vegetation in southern Ecuador
2000- K. Bach (Univ. Göttingen) - Vegetation and Climate in the Bolivian Andes
1999-2003 J. Gonzales (Univ. Göttingen): Monograph of the genus Sticherus
(Pteridophyta)
1999-2003 I. Holz (Univ. Göttingen): Epiphyte vegetation in the canopy of montane oak
forests of Costa Rica, along a succesional gradient
1998-2003 T. Krömer (Univ. Göttingen): Epiphyte vegetation in the canopy of submontane
rain forests and fallows in Bolivia
1998-2003 A. Berg (Univ. Göttingen): Vegetation and phytogeography of the
páramos of Venezuela
1996-2002 J. Heinrichs (Univ. Göttigen): Monograph of neotropical Plagiochila (Hepaticae)
1996-2000 G. Dauphin (Univ. Göttingen): Monograph of Ceratolejeunea (Hepaticae).
1996-2000 G. Weis (Univ. Göttingen): Sporophyte anatomy of Lejeuneaceae and
Jubulaceae (Hepaticae)
1992-1995 E. Reiner-Drehwald (Univ. Buenos Aires): Lejeuneaceae of Argentina
1988-1993 J. Wolf (Univ. Amsterdam): Ecology of epiphytes in montane rain forests of
Colombia
1988-1993 A. Aptroot (Univ. Utrecht): Taxonomy and phylogeny of pyrenocarpous lichens
1984-1988 W.H.A. Hekking (Univ. Utrecht): Monograph of neotropical Violaceae
1981-1985 M.W. van Slageren (Univ. Utrecht): Taxonomy of Lejeuneaceae (Hepaticae)
1980-1985 G.B.A. van Reenen (Univ. Utrecht): Altitudinal zonation of the Andes of
Colombia
1978-1983 H.J. Sipman (Univ. Utrecht): Monograph of the Megalosporaceae (Lichenes)
1976-1987 M.A. Bruggeman-Nannenga (Univ. Utrecht): Taxonomy of Fissidentaceae
1976-1987 C. Oostendorp (Univ. Utrecht): Palaeozoic and Mesozoic bryophytes
1976-1979 H. van der Werff (Univ. Utrecht): Vegetation of the Galapagos Islands

Courses taught in the Tropics (tropical botany, bryology)

October 1984 COLOMBIA: Bogotá (Course, Universidad Nacional: Fac. Biologia)
July 1988 PUERTO RICO (Internat. Course, Univ. of Puerto Rico)
March 1996 PANAMA: Panamá (Internat. Course, Univ. Panamá, supported by EEC)
July 1996 BRAZIL: Rio de Janeiro (course, Brazilian Botanical Congress)
August/Sept. 1997 ECUADOR: Quito (Internat. Course, Universidad Catolica, DAAD)
August 1998 BRAZIL: Recife (course of Universidad Federal de Recife, DAAD)
September 2001 INDONESIA: Bogor (Training course BIOTROP)
September 2003 INDONESIA: Bogor (Training course BIOTROP)

Invited lectures

2000-2003 various lectures in Germany, Brazil, Ecuador, Colombia, Venezuela, Mexico, Indonesia, India, etc.
1999 Ulm, St. Louis, Jena, La Paz
1998 Berlin, Bogota, Essen, Leipzig, Bonn, Recife
1997 Amsterdam, Bejing, Quito, Saarbrücken
1996 Panama, Rio de Janeiro, Frankfurt, The Netherlands
1995 Second International ESF-Workshop on Tropical Canopy Research, Ulm
International Conference on "Foliicolous Cryptogams", Eger, Hungary
1994 Symposium "La Biologie Hier et Aujourd'hui", Genève
Symposium "Neotropical Bryology", VI Congreso Latinamericano de Botanica, Argentina
Seminar, Universität Frankfurt
Annual meeting, Dutch Bryological and Lichenological Society, Leiden
1993 Richard Spruce Commemorative Symposium, Linnean Society of London
Symposium "Neotropical Montane Rain Forests", New York
Botany Seminar Series, Smithsonian Institution, Washington
Symposium "Bryophyte Systematics", International Botanical Congress, Tokyo
"Bryophyte Flora's of the World" workshop, International Botanical Congress,
Tokyo
Seminar, Universidad de Costa Rica
Flora Neotropica workshop, Smithsonian Tropical Research Institute, Panama
1973-1992: 47 invited lectures and seminars in Australia, Austria, Belgium, Bolivia, Canada, Colombia, Ecuador, England, Finland, French Guiana, Germany, Hungary, Japan, Mexico, Netherlands, Panama, Poland, Russia, Switzerland, Tschechoslovakia, USA

SCIENTIFIC PUBLICATIONS
Stephan Robbert Gradstein

2004 and in press
Andersson, M. S. & Gradstein, S. R. Impact of different management intensities on non-vascular epiphyte diversity in cacao plantations in western Ecuador. Biodiversity and Conservation (in press).
Bischler, H., Gradstein, S. R., Jovet-Ast, S., Long, D. G. & Salazar Allen, N. The Marchantiidae. Flora Neotropica Monograph, ca. 300 p. (in press).
Gradstein, S. R. & Holz, I. in press. Diversidad de las briofitas en los paramos de Costa Rica. In: M. Kappelle et al. (eds.), Paramos of Costa Rica. InBio, Costa Rica (in press).
Gradstein, S. R., Krömer, T. & Velasquez, A. 2004. On the use of plant indicators in forest resource assessment. Proceedings DAAD Symposium "Las relaciones cientificas mexico-alemanes - situacion actual y perspectives." Mexico (in press).
Gradstein, S. R., Reiner-Drehwald, M.E. & Jost, L. 2004. The systematic position and distribution of Myriocolea irrorata (Lejeuneaceae, Hepaticae), an endangered liverwort from the Ecuadorian Andes. Journal of the Hattori Botanical Laboratory 93: 235-248.
Groth-Malonek, M., J. Heinrichs, H. Schneider & S.R. Gradstein 2004. Phylogenetic relationships in the Lejeuneaceae (Hepaticae) inferred using ITS sequences of nuclear ribosomal DNA and morphological evidence. Org. Div. Evol.
Kessler, M., Keßler, P.J.A., Gradstein, S. R., Bach, K., Schmull, M. & Pitopang, R. Tree diversity in primary forest and different land use systems in Central Sulawesi, Indonesia. Biodiversity and Conservation (in press).
Krömer, T. & Gradstein, S. R. 2004. Diversität der vaskulären Epiphyten in primären und sekundären Bergwäldern Boliviens. In: S.-W. Breckle et al. (eds.), Results of Worldwide Ecological Studies. Second Symposium of the A.F.W. Schimperstiftung, Hohenheim, p. 155-165.
Parolly, G., Kürschner, H., Schäfer-Verwimp, A. & Gradstein, S. R. Cryptogams of
the Reserva Biologica San Francisco (Prov. Zamora-Chinchipe, Southern Ecuador). III. Bryophytes - Supplement. Cryptogamie, Bryol. (in press).
Ramadhanil & Gradstein, S. R. 2004. Herbarium Celebense (CEB) and its role in supporting research on plant diversity. Biodiversitas 5: 36-41.
Roos, M., Kerßler, P., Baas, P & Gradstein, S. R. & Baas, P. Species diversity and endemism of 5 major Malesian islands: diversity-area relationships. J. Biogeogr. (in press).
Schmull, M., Heinrichs, J., Baier, D., Ullrich, G., Wagenitz, G., Groth, H., Hourticolon, S. & Gradstein, S. R. The type database at Göttingen (GOET). - a virtual herbarium online. Taxon (in press).
Schulze, C.H., Waltert, M., Keßler, P.J.A., Pitopang, R., Shahabuddin, Veddeler, D., Steffan-DeWenter, I., Mühlenberg, M., Gradstein, S.R. & Tscharntke, T. Biodiversity indicator taxa of tropical land-use systems: comparing plants, birds and insects. Ecological Applications (in press).
Wilson, R., Gradstein, S. R., Heinrichs, J., Hartmann, F. & Ilkiu-Borges, A. L. Molecular phylogeny of the Lejeuneaceae inferred from nuclear, chloroplast and mitochondrial DNA sequences. A>nn. Missouri Bot. Garden (in press).
Zhu, R.-L. & Gradstein, S.R. 2004. Lopholejeunea minuta R.L.Zhu & Gradst. (Lejeuneaceae, Hepaticae), a new species from the Solomon Islands. Nova Hedwigia 78: 435-438.

2003
Acebey, A., Gradstein, S.R. & Krömer, T. 2003. Species richness and habitat diversification of corticolous bryophytes in submontane rain forest and fallows of Bolivia. Journal of Tropical Ecology 18: 9-18.
Bach, K., Schawe, M., Beck, S., Gerold, G., Gradstein, S.R. & Moraes, M. 2003. Vegetation, soil and climate in different elevational belts in montane cloud forests of the Yungas, Bolivia - first results. Ecología de Bolivia 38: 3-14.
Engel, J. J. & Gradstein. S. R. 2003. Physotheca Engel & Gradst., a new genus of Hepaticae from Ecuador, belonging to a new subfamily Physothecoideae Engel & Gradst. Taxon 52: 763-773.
Gradstein, S.R. 2003. Biodiversitätsforschung im tropischen Regenwald. In: S. R. Gradstein, R. Willmann & G. Zizka (eds.), Perspektiven der Biodiversitätsforschung. Kleine Senckenberg Reihe 45: 95-110.
Gradstein, S.R. & Costa, D.P. 2003. The Liverworts and Hornworts of Brazil. Memoirs New York Bot. Garden 87: 1-317.
Gradstein, S.R., Nadkarni, N.M., Krömer, T., Holz I. & Nöske, N. 2003. A protocol for rapid and representative sampling of epiphyte diversity of tropical rain forests. Selbyana 24: 87-93.
Gradstein, S.R., Meneses Q., R.I. & Allain Arbe, B. 2003. Catalogue of the Hepaticae and Anthocerotae of Bolivia. J. Hattori Bot. Lab. 93: 1-65.
Gradstein, S. R., Reiner-Drehwald, M.E. & Muth, H. 2003. Über die Identität der neuen Aquarienpflanze "Pellia endiviifolia". Aqua Planta: 88-95.
Gradstein, S.R., Reiner-Drehwald, M.E. & Schneider, H. 2003. A phylogenetic analysis of the genera of Lejeuneaceae (Hepaticae). Bot. J. Linn. Soc. 143: 391-410.
Gradstein, R.R., Willmann, R. & Zizka, G. (eds.). 2003. Perspektiven der Biodiversitätsforschung. Kleine Senckenberg Reihe 45: 1-248.
Groth, H., Lindner, M., Wilson, R., Hartmann, F.A., Schmull, M., Gradstein, S.R. & Heinrichs, J. 2003. Biogeography of the genus Plagiochila (Hepaticae): natural species groups span several floristic kingdoms. Journal of Biogeography 30: 965-978.
Heinrichs, J., Gradstein, S.., Groth, H. & Lindner, M. 2003. Plagiochila cucullifolia var. anomala var. nov. from Ecuador, with notes on discordant molecular and morphological variation in bryophytes. Plant Systematics and Evolution 242: 205-216.
Krömer, T. & Gradstein, S. R. 2003. Species richness of vascular epiphytes in montane forests and fallows in Bolivia. Selbyana 25: 190-195.
Nöske, N., Gradstein, S.R., Kürschner, H., Parolly, G. & Torracchi, S. 2003. Cryptogams of
the Reserva Biologica San Francisco (Prov. Zamora-Chinchipe, Southern Ecuador). I. Bryophytes. Cryptogamie, Bryol. 24: 15-32.
Pitopang, R., Kessler, P., Gradstein, S.R., Guhardja, E., Tjitrosoedirdjo, S. & Wiriadinata, H. 2003. Tree composition in secondary forests of Lore Lindu National Park, Sulawesi. In: G. Gerold et al. (eds.), Stability of rain forest margins in Indonesia. Springer, Berlin.
Uribe M., J. & Gradstein, S. R. 2003. Type studies on Frullania subgenus Meteoriopsis I. Cryptogamie, Bryologie 24 : 193-207.
Zhu, R.-L. & Gradstein, S.R. 2003. Oil bodies of several species of Lejeuneaceae (Hepaticae). J. Hattori Bot. Lab. 94: 187-195.

2002
Gradstein, S.R. 2002. Investigaciones sobre la biodiversidad de las selvas tropicales atraves de las briofitas. - Inst. Estudos Avançados Univ. São Paulo, Série Ciências Ambientais, Avançados 21: 11-25.
Gradstein, S.R. & Gradstein-Serna, C. 2002. Martius y la exploración botánica en America del Sur. - Inst. Estud. Avanç. Univ. São Paulo, Série Ciências Ambientais, Avançados 21: 26-28.
Gradstein, S.R., He, X.-L., Piippo, S. & Mizutani, M. 2002. Bryophyte Flora of the Huon Peninsula, Papua New Guinea LXVIII. Lejeuneaceae subfamily Ptychanthoideae (Hepaticae). Acta Bot. Fennica 174: 1-88.
Holz, I., Gradstein, S.R., Heinrichs, J. & Kappelle, M. 2002. Bryophyte diversity, microhabitat differentiation and distribution of life forms in Costa Rican upper montane Quercus forest. The Bryologist 105: 334-348.
Keßler, P.J.A., Bos, M.M., Sierra Daza, S.E.C., Kop, A., Willemse, L.P.M., Pitopang, R. & Gradstein, S.R. 2002. Checklist of woody plants of Sulawesi, Indonesia. Blumea Suppl. 14: 1-160.

2001
Gradstein, S.R., Churchill, S.P. & Salazar A., N. 2001. Guide to the Bryophytes of Tropical America. Memoirs New York Bot. Garden 86: 1-577.
Gradstein, S. R., Griffin, D., Morales, M. I. & Nadkarni, N. M. 2001. Diversity and habitat differentiation of mosses and liverworts in the cloud forest of Monteverde, Costa Rica. Caldasia 23: 203-212.
Gradstein, S. R., Sauer, M., Koperski, M., Braun, W. & G. Ludwig 2001. TaxLink, a program for computer-assisted documentation of different circumscriptions of biological taxa. TAXON 80: 1075-1084.
Heinrichs, J., Groth, H., Gradstein, S. R., Rycroft, D. S., Cole, W. J. & Anton, H. 2001. Plagiochila rutilans (Hepaticae): a poorly knwon species from Tropical America. Bryologist 104: 350-361.
Heinrichs, J., Holz, I. & Gradstein, S. R. 2001. The sporophyte of Steereochila (Plagiochilaceae). J. Bryol. 23: 35-41.
Holz, I., Heinrichs, J., Schäfer-Verwimp, A. & Gradstein, S. R. 201. Additions to the hepatic flora of Costa Rica III. Cryptogamie, Bryologie.
Jongmans, A. G., van Breemen, N., Gradstein S. R. & van Oort, F. 2001. How liverworts build hanging gardens from volcanic ash in Costa Rica. Catena 44: 13-22.
Kautz, T. & Gradstein, S. R. 2001. On the ecology and conservation of Spruceanthus theobromae (Lejeuneaceae, Hepaticae) from Western Ecuador. The Bryologist 104:.
Merwin, M., Gradstein, S. R. & Nadkarni, N. M. 2001. Diversity of epiphytic bryophytes in a mosaic of undisturbed and disturbed lower montane forest, Monteverde, Costa Rica. Tropical Bryology 20: 63-71.
Zhu, R.-L., Grolle, R. & Gradstein, S. R. 2001. On Cyrtolejeunea A. Evans (Lejeuneaceae, Hepaticae). TAXON 50: 1067-1074.

2000
Da Costa, D. P. & Gradstein, S. R. 2000. On the status of Metzgeria angustata, a poorly known neotropical taxon. The Bryologist 103: 757- 759.
Gradstein, S.R. & Raeymaekers; G. 2000. Tropical America. In: Hallingbäck, T. (ed.), Status Survey and Conservation Action Plan: Mosses, Liverworts and Hornworts. IUCN, Gland.
Heinrichs, J., Holz, I. & Gradstein, S. R. 2001. The sporophyte of Steereochila (Plagiochilaceae). J. Bryol. 23: 35-41.
Heinrichs, Anton, H., Gradstein, S. R., Mues, R. & Holz I. 2000. Surface wax, a new taxonomic feature in Plagiochilaceae. Plant Systematics and Evolution 225: 225-233.
Heinrichs, J., Anton, H., Holz, I. & Gradstein 2000. On the blue stem colour in Plagiochila longispina Lindenb. & Gottsche (Plagiochilaceae). Cryptogamie, Bryol. 21: 109-111.
Heinrichs, J., Anton, H., Gradstein, S. R. & Mues, R. 2000. Systematics of Plagiochila sect. Glaucescentes Carl (Hepaticae): a morphological and chemotaxonomical approach. Plant Systematics and Evolution 220: 115-138.
Heinrichs, J. & Gradstein, S. R. 2000. A revision of Plagiochila sect. Crispatae and sect. Hypnoides (Hepaticae) in the Neotropics I. Nova Hedwigia 70: 161-184.
Koperski, M. Sauer, M., Braun W. & Gradstein, S. R. 2000. Referenzliste der Moose Deutschalnds. Schriftenreihe für Vegetationskunde 34: 1-519.

1999
Gradstein, S. R. 1999. A tribute to Riclef Grolle, distinguished hepaticologist. Haussknechtia 9: 7-18.
Gradstein, S. R. & Vana, J. 1999. On the taxonomy of Kymatocalyx and Stenorrhipis (Cephaloziellaceae). Haussknechtia Beiheft 9: 155-170.
Gradstein, S. R. 1999. On the rediscovery of Spruceanthus theobromae (Hepaticae), an endangered species of cacao trees in western Ecuador. Bryobrothera 5: 81-86.
Gradstein, S. R. 1999. Hepatics. In: J. Luteyn (ed.), Páramos, a Checklist of Plant Diversity, Geographical Distribution and Botanical Literature. Memoirs New York Bot. Garden 84: 65-73.
Gradstein, S.R., W. Braun, M. Koperski & M. Sauer 1999. Methodenentwicklung zur Verwaltung unterschiedlicher taxonomischer Auffassungen. Courier Forschungsinstitut Senckenberg 215: 177-179.
Heinrichs, J. & Gradstein, S. R. 1999. On Plagiochila longiramea Steph. (Hepaticae), a poorly known species of Bolivia. Candollea 54: 73-81.
Heinrichs, J., Renker, C. & Gradstein, S. R. 1999. A taxonomic revision of Plagiochila subplana Lindenb., a widespread liverwort of tropical America. Haussknechtia.
Müller, J., Heinrichs, J. & Gradstein, S. R. 1999. A revision of Plagiochila sect. Plagiochila in the Neotropics. Bryologist 102:

1998
Dauphin, G., Gradstein, S. R., Bernecker-Lücking, A. & Morales, M. 1998.Additions to the hepatic flora of Costa Rica. Lindbergia 23: 74-80.
Gradstein, S. R. 1988. Hepatic diversity in the neotropical páramos. Monogr. Syst. Bot. Missouri Bot. Garden 68: 69-85.
Gradstein, S. R. 1998. Perspektiven der Systematischen Tropenbotanik. Georgia Augusta Mai 1998, p. 43-50.
Heinrichs, J., Gradstein, S. R. & Grolle, R. 1998. A revision of the neotropical species of Plagiochila described by Olov Swartz. J. Hattori Botanical Lab. 85.
Stotler, R., Salazar Allen, N., Gradstein S.R., McGuiness, W., Whittemore, A., Chung, C. 1998. A Checklist of the Hepatics and Anthocerotes of Panama. Tropical Bryology 15: 167-195.
Uribe M., J. & Gradstein, S. R. 1998. Catalogue of the Hepaticae and Anthocerotae of Colombia. Bryophytorum Bibliotheca 53, 100 p.

1997
Gradstein, S. R. & P. Geissler 1997. Notes on the genus Leucolejeunea. Cryptog., Bryol. Lichenol. 18: 177-182.
Gradstein, S. R. 1977. Bromeliophila helenae, a new species of Lejeuneaceae from the neotropics. Cryptog., Bryol. Lichenol. 18: 217-221.
Gradstein, S. R. 1997. The taxonomic diversity of epiphyllous bryophytes. Abstracta Botanica 21: 15-19.
Gradstein, S. R. 1997. Hepatophyta, Anthocerotophyta. In: J. Boggan, V. Funk, C. Kelloff, M. Hoff, G. Cremers & C. Feuillet (ed.), Checklist of the Plants of the Guianas, p. 9-15. Smithsonian Institution, Washington.
Reiner-Drehwald, M. E. & Gradstein, S. R. 1997. New combinations and synonyms in Myriocoleopsis Schiffn. (Lejeuneaceae). J. Bryol. 19: 638-640.
Salazar Allen, N. & S. R. Gradstein 1997. A report on the bryoflora of Peru. In: D. E. Wilson & A. Sandoval (eds.), Manu, the Biodiversity of Southeastern Peru, pp. 200-204. Washington.
Yano, O. & S. R. Gradstein. 1997. Genera of Hepatics. Syst.-Geobot. Inst., Universität Göttingen, 29 p.

1996
Gradstein, S.R.. 1996. A Guide to the Bryophytes of Tropical America. 1. Hepaticae and Anthocerotae. Brussels, 200 pp.
Gradstein, S. R. and H. van Melick. 1996. De Nederlandse Levermossen - Flora en Verspreidingsatlas van de Nederlandse Hepaticae en Anthocerotae. Royal Dutch Natural History Society, The Netherlands, 350 pp.
Gradstein, S. R. et al. 1996. How to sample the epiphytic diversity of tropical rain forests. Ecotropica: 59-72.
Gradstein, S.R. 1996. Spruce's Hepaticae Amazonicae et Andinae and South American Floristics. In: Richard Spruce, Botanist and Explorer, pp. 141-150. Kew, U.K.
Gradstein, S.R., G.B.A. van Reenen and D. Griffin III. 1996. Fitogeografia y origen de la Flora de Briofitas en el Transecto Parque Los Nevados (Colombia). Estudios de Ecosistemas Tropandinos 4: 377-384.
Gradstein, S. R. 1996. Bryology at the Herbarium of the University of Göttingen. The Bryological Times 88: 1-2.

1995
Gradstein, S.R. 1995. Diversity of Hepaticae and Anthocerotae in montane forests of the tropical Andes. In: Churchill, S. P. et al. (eds.), Biodiversity and Conservation of eotropical Montane Forests, pp. 321-334. New York Botanical Garden, New York.
Gradstein, S.R and C. Equihua 1995. An epizoic Bryophyte and Algae on the lizard Corythophanes in a Mexican rain forest. Biotropica 27: 265-268.
Gradstein, S. R. and M. E. Reiner-Drehwald 1995. Szweykowskia, a new genus of Plagiochilaceae (Hepaticae) from tropical America. Fragm. Flor. Geobot. 40: 31-38.
Gradstein, S. R. 1995. Bryophyte diversity of the tropical rainforest. Arch. Sci. Genève 48: 91-96.
Reiner-Drehwald, M. E. and S. R. Gradstein 1995. Myriocoleopsis riparia (Lejeuneaceae), a new species from south-eastern Brazil and north-eastern Argentina. J. of Bryol. 18: 479-484.
Morales, M. I. and S. R. Gradstein 1995. Diplasiolejeunea involuta Winkler, una especie poco conocida. Trop. Bryol. 10: 75-79.
Sillet, S. C., S. R. Gradstein and D. Griffin, III 1995. Bryophyte diversity of Ficus tree crowns from cloud forest and pasture in Costa Rica. Bryologist 98: 251-260.

1994
Gradstein, S. R., A. Lücking, M. I. Morales and G. Dauphin 1994. Additions to the hepatic flora of Costa Rica. Lindbergia 19: 73-86.
Gradstein, S.R. Die Moose der Galagagos Inseln. In: G. Zizka & K. Klemmer (eds.), Pflanzen- und Tierwelt der Galapagos Inseln, pp. 59-63. Palmengarten, Frankfort.
Gradstein, S. R. 1994. Verdoorn's Studien über Asiatische Jubuleae. Hikobia 11: 451-456.
Gradstein, S.R. and J. Vána.1994. A boreal liverwort community on rotten logs in tropical montane forest of Mexico. Tropical Bryology 9: 31-34.
Gradstein, S.R. 1994. Lejeuneaceae: Ptychantheae. Brachiolejeuneae. Flora Neotropica Monograph 62: 1-225. New York.
Geissler, P. and S.R. Gradstein. 1994. On the identity of Phragmicoma lehmanniana Nees and other species described in the genus Phragmicoma. J. Hattori Bot. Lab. 75: 201-209.

1993
Gradstein, S.R., R. Grolle and A. Schäfer-Verwimp. 1993. Two new species of Lejeuneaceae from Brazil. J. Hattori Bot. Lab 74: 40-49.
Gradstein, S.R., 1993. New Hepaticae in amber of the Dominican Republic. Nova Hedwigia 57: 353-374.
Gradstein, S.R., 1993. A decade of neotropical exsiccates. Trop. Bryol. 7: 77-85.
Gradstein, S.R. 1993. New publications. Bryol. Times 72: 2-3.

1992
Gradstein, S. R. Hepatophyta. In: J. Boggan, V. Funk, C. Kelloff, M. Hoff, G. Cremers & C. Feuillet (ed.), Checklist of the Plants of the Guianas (Guyana, Surinam, French Guiana), p. 14-26. Smithsonian Institution, Washington.
Gradstein, S. R. Anthocerophyta. In: J. Boggan, V. Funk, C. Kelloff, M. Hoff, G. Cremers & C. Feuillet (ed.), Checklist of the Plants of the Guianas (Guyana, Surinam, French Guiana), p. 27. Smithsonian Institution, Washington.
Gradstein, S.R., R. Klein, L. Kraut, R. Mues, J. Spörle and H. Becker. 1992. Phytochemical and morphological evidence for the existence of two species in Monoclea. Plant Systematics and Evolution 180: 115-135.
Gradstein, S.R. and N. Salazar Allen. 1992. Bryophyte diversity along an altitudinal gradient in Darién National Park, Panama. Trop. Bryol. 5: 61-71.
Gradstein, S.R. 1992. The vanishing Tropical Rain Forest as an environment for bryophytes and lichens. In: J.W. Bates and A.R. Farmer (eds), Bryophytes and lichens in a Changing Environment, p. 232-256. Oxford University Press.
Gradstein, S.R. 1992. Endemism and Evolutionary trends in Asiatic Lejeuneaceae. Proceed. Congr. East Asiatic Bryology, Helsinki: 1-5.
Gradstein, S.R. 1992. What is Lejeunea trigona? Contr. Univ. Michigan Herb. 15: 99-103.
Gradstein, S.R. 1992. A Key to the holostipous Lejeuneaceae of Colombia. Caldasia 16 (109): 429-438.
Gradstein, S.R. 1992. On Thysananthus, Dendrolejeunea, and Fulfordianthus gen. nov. Bryologist 95: 42-51.

1991
Frahm, J.-P. and S.R. Gradstein. 1991. An altitudinal zonation of the tropical rain forest using bryophytes. J. of Biogeography 18: 669-678.
Gradstein, S.R. 1991. Diversity and Distribution of Asian Lejeuneaceae subfamily Ptychanthoideae. Trop. Bryol. 4: 1-16.
Yamada, K. and S.R. Gradstein. 1991. The genus Radula in the Galapagos Islands. Trop. Bryol. 4: 63-68.
Mues, R. and S.R. Gradstein. 1991. Chemotaxonomy of the Pleuroziaceae. J. Hattori Bot. Lab. 70: 79-90.
Gradstein, S.R. 1991. A view of the liverwort flora of tropical America. Bull. British Bryol. Soc. 57: 13-15.

1990
Gradstein, S.R. 1990. Morphology and Classification of the Hepaticae: an introduction. In: H.D. Zinsmeister & R. Mues (eds.), Chemistry and Chemical Taxonomy of Bryophytes, p. 3-17. Oxford University Press.
Frahm, J.-P. and S.R. Gradstein. 1990. Ecology of tropical bryophytes: a bibliography. Trop. Bryol. 3: 75-77.
Cornelissen, J.H. and S.R. Gradstein. 1990. On the occurrence of bryophytes and macrolichens in different lowland rain forest types in Guyana. Trop. Bryol. 3: 29-35.
Gradstein, S.R. 1990. A key to the New World species of holostipous Lejeuneaceae. Trop. Bryol. 3: 45-57.
Gradstein, S.R., D. Montfoort and J.H. Cornelissen. 1990. Phytogeography and species richness of the bryophyte flora of the Guianas, with special attention to the lowland rain forest. Trop. Bryol. 2: 117-125.
Gradstein, S.R. 1990. Hiroshi Inoue: some personal recollections. Hiroshi Inoue Memorial Publication: 261-264. National Science Museum, Tokyo.
Iwatsuki, Z. and S.R. Gradstein. 1990. Obituary: Hiroshi Inoue (1932-1989). Taxon 39: 546.
Gradstein, S.R. 1990. Obituary: Hiroshi Inoue (1932-1989). Bryol. Times 53: 1-3.
Gradstein, S.R. 1990. Review of: N.G. Miller (ed.), Bryophyte Ultrastructure. Acta Bot. Neerl. 38: 124-125.

1989
Thiers, B.M. and S.R. Gradstein. 1989. Lejeuneaceae of Australia I: subfamily Ptychanthoideae. Memoir New York Botanical Garden 52: 1-79.
Gradstein, S.R. and T. Pócs. 1989. The Biogeography of tropical rainforest Bryophytes. In: H. Lieth and M.J.A. Werger (eds.), Tropical rain forest Ecosystems, p. 311-325. Ecosystems of the World Vol. 14A. Elsevier, Amsterdam.
Gradstein, S.R. and J. Florschütz-de Waard. 1989. Results of a botanical expedition to Mount Roraima, Guyana. I. Bryophytes. Trop. Bryol. 1: 25-54.
Gradstein, S.R., G.B.A. van Reenen and D. Griffin. 1989. Species richness and origin of the bryophyte flora of the Colombian Andes. Acta Bot. Neerl. 38: 439-448.
Gradstein, S.R. 1989. A Key to the Hepaticae and Anthocerotae of Puerto Rico and the Virgin Islands. The Bryologist 92: 329-348.
Gradstein, S.R. and W.H.A. Hekking. 1989. A catalogue of the bryophytes of the Guianas. I. Hepaticae and Anthocerotae. J. Hattori Bot. Lab. 66: 197-230.
Gradstein, S.R. and G. Zijlstra 1989. Ptychanthus, Index Hepaticarum 11: 330-333; Ptycholejeunea, Ibid.: 341-342.
Gradstein, S.R. 1989. Phragmilejeunea, Index Hepaticarum 11: 90; Ptychocoleus, Ibid.: 334-341.
Gradstein, S.R. 1989. Is Marchantia plicata the largest thalloid liverwort on earth? Bryol. Times 50: 3.
Gradstein, S.R. 1989. Obituary: Stanley Wilson Greene (1928-1989). Bryol. Times 51: 1-3.
Gradstein, S.R. 1989. Review of: R.E. Longton, The Biology of Polar Bryophytes and Lichens. Bryol. Times 51: 11.

1988
Zanten, B.O. van, and S.R. Gradstein. 1988. Experimental dispersal geography of Neotropical liverworts. Beih. Nova Hedwigia 90: 41-94.
Gradstein, S.R., Y. Asakawa, R. Mues & R. Klein. 1988. On the taxonomic significance of secondary metabolites in the Lejeuneaceae. J. Hattori Bot. Lab. 64: 159-168.
Inoue, H. and S.R. Gradstein. 1988. A remarkable new species of Anastrophyllum from Mt. Roraima, Guyana. Bull. Nat. Sci. Mus. Tokyo. l4: 87-91.
Grolle, R. and S.R. Gradstein. 1988. Haesselia, a new genus of Cephaloziaceae from Mt. Roraima, Guyana. J. Hattori Bot. Lab. 64: 327-334.
Bischler, H. and S.R. Gradstein. 1988. Bryological Societies: An overview. Taxon 36: 768-772.

1987
Gradstein, S.R. and J. Vána. 1987. On the occurrence of Laurasian liverworts in the Tropics. Memoir New York Botanical Garden 45: 388-425.
Gradstein, S.R. and J.P. Frahm. 1987. Die floristische Höhengliederung der Moose entlang des Bryotrop-transectes in Peru. Beih. Nova Hedwigia 88: 105-113.
Gradstein, S.R. 1987. The Ptychanthoideae of Latin America: An Overview. (Studies on Lejeuneaceae subfam. Ptychanthodeae XVI). The Bryologist 90: 337-343.
Zanten, B.O. and S.R. Gradstein. 1987. Feasibility of long-distance transport in Colombian hepatics, preliminary report. Symp. Biol. Hung. 35: 315-322.
Frahm, J.P. and S.R. Gradstein. 1987. The genera Bryohumbertia and Campylopus in the Guianas. Cryptog., Bryol. Lichenol. 8: 3ll-3l9.

1986
Gradstein, S.R. and P.W. Richards. 1986. Frans Verdoorn, 1906-1984 and his contributions to bryology. J. Bryology l4: 203-2l3.
Gradstein, S.R. 1986. Return to Mount Roraima, Guyana. Bryol. Times 40: 1-3.
Kruijt, R. and S.R. Gradstein. 1986. Studies on Lejeuneaceae subfam. Ptychanthoideae X. On Brachiolejeunea phyllorhiza (Nees) comb. nov. Nova Hedwigia 43: 299-309.
Gradstein, S.R. 1986. The genus Colura (Hepaticae) in the Galapagos Islands. Hikobia 9: 353-356.
Reenen, G.B.A. van, and S.R. Gradstein. 1986. Analisis de la vegetacion de briofitas en el transecto Buritaca-la Cumbre. Studies on Andean Ecosystems 2: 189-202.
Reenen, G.B.A. van, and S.R. Gradstein. 1986. Briofitas del Transecto Buritaca-La Cumbre. Studies on Andean Ecosystems 2: 177-183.
Frahm, J.P. and S.R. Gradstein. 1986. An apparatus for drying bryophytes in the field. Bryol. Times 38: 5.

1985
Vitt, D.H., S.R. Gradstein and Z. Iwatsuki. 1985. Compendium of Bryology. Bryophytorum Bibliotheca vol. 30, 355 p.
Gradstein, S.R. (ed.) 1985. Contributions to a Monograph of the Lejeuneaceae subfam. Ptychanthoideae. Beiheft zur Nova Hedwigia vol. 80, 253 p.
Bischler, H. and S.R. Gradstein. 1985. A causerie on Bryological Societies. Brit. Bryol. Soc. Spec. vol. 1: 11-16.
Gradstein, S.R. and J. van Beek. 1985. A revision of the genus Symbiezidium. Beih. Nova Hedwigia 80: 221-248.
Gradstein, S.R. 1985. A revision of the genus Stictolejeunea. Beih. Nova Hedwigia 80: 195-220.
Gradstein, S.R. and C. Vanden Berghen. 1985. Schiffneriolejeunea sect. Pappeanae en Afrique. Beih. Nova Hedwigia 80: 173-193.
Kruijt, R. and S.R. Gradstein. 1985. A new genus of Lejeuneaceae from Tropical America: Lindigianthus gen. nov. Beih. Nova Hedwigia 80: 165-172
Gradstein, S.R. and G.M.C. Buskes. 1985. A revision of Neotropical Archilejeunea. Beih. Nova Hedwigia 80: 89-112.
Gradstein, S.R., R. Matsuda and Y. Asakawa. 1985. A chemotaxonomic survey of terpenoids and aromatic compounds in the Lejeuneaceae. Beih. Nova Hedwigia 80: 63-86.
Gradstein, S.R. 1985. A guide to the holostipous Lejeuneaceae. Beih. Nova Hedwigia 80:
13-30
Gradstein, S.R. and G. Zijlstra. 1985. Lopholejeunea. In: E.P. Geissler & H. Bischler (eds.), Index Hepaticarum vol. X. J. Cramer, Braunschweig.
Gradstein, S.R. 1985. Obituary: J. Cramer (193l-1985). Bryol. Times 34: 3-4.
Gradstein, S.R. 1985. Review of: J.-P. Frahm & W. Frey, Moosflora. Acta Bot. Neerl. 34: 367.

1984
Weber, W.A. and S.R. Gradstein. 1984. Lichens and Bryophytes. In: R. Perry (ed.), Key Environments: Galapagos, p. 7l-84. Pergamon Press, Oxford.
Gradstein, S.R., D.H. Vitt and R.S. Anderson. 1984. The epizoic occurrence of Daltonia angustifolia in Papua New Guinea. Crytog., Bryol. Lichenol. 5: 47-50.
Frahm, J.-P. and S.R. Gradstein. 1984. Some recommendations for the citations of synonyms, types and specimes. Bryol. Times 28: 1-2.
Reenen, G.B.A. van, and S.R. Gradstein. 1984. An investigation of bryophyte distribution and ecology along an altitudinal gradient in Colombia. J. Hattori Bot. Lab. 56: 79-84.
Gradstein, S.R. 1984. Review of: P.S. Ashton, Dipterocarpaceae, Flora Malesiana 9(2). Acta Bot. Neerl. 33: 142.
Weber, W.A. and S.R. Gradstein. 1984. Death on the Galapagos. Bryol. Times 26: 1-2.

1983
Gradstein, S.R., T. Pócs and J. Vána. 1983.Disjunct Hepaticae in Tropical America and Africa. Acta Bot. Hungarica 29: 127-171.
Reenen, G.B.A. van, and S.R. Gradstein. 1983. Studies on Colombian Cryptogams XX. A transect analysis of the bryophyte vegetation along an altitudinal gradient on the Sierra Nevada de Santa Marta, Colombia. Acta Bot. Neerl. 32: 163-175.
Gradstein, S.R. 1983. Review of: J. Kuyt, Flora of Waterton Lakes National Park. Acta Bot. Neerl. 32: 125.
Gradstein, S.R. 1983. Review of: M. Jacobs, Het Tropisch Regenwoud. Acta Bot. Neerl. 32: 123-124.
Gradstein, S.R. 1983. Review of: H. Lieth, Tasks for Vegetation Science vols. 1, 5, 7, Acta Bot. Neerl. 32: 348.

1982
Gradstein, S.R., R. Grolle, G. Zijlstra and H. Bischler. 1982. The Sprucean genera of Lejeuneaceae: proposals for conservation. Taxon 31: 746-752.
Griffin, D., S.R. Gradstein and J. Aguirre. 1982. On a new antipodal element in the neotropical paramos: Dendrocryphaea latifolia sp. nov. Acta Bot. Neerl. 3l: 175-184.
Gradstein, S.R. and W.A. Weber. 1982.The bryogeography of the Galapagos Islands. J. Hattori Bot. Lab. 52: 127-152.
Gradstein, S.R., H.J. During and A. Touw. 1982. Bryophyte mapping in the Netherlands. Lejeunia 107: 37-40.
Geissler, P. and S.R. Gradstein. 1982. SEM studies on sporophyte characters in Lejeuneaceae, a preliminary report. J. Hattori Bot. Lab. 52: 127-131.
Kashiwadani, H. and S.R. Gradstein. 1982. Notes on Baeomyces sanguineus Asah. and Gymnoderma coccocarpum Nyl. Misc. Bryol. Lichenol. 9: 37-40.
Gradstein, S.R. 1982. Bryological exploration of Tropical America: closing remarks. Beih. Nova Hedwigia 7l.
Griffin, D. and S.R. Gradstein. 1982. Bryological exploration of the Tropical Andes: current status. Beih. Nova Hedwigia 7l: 506-512.
Gradstein, S.R. 1982. Generic concepts in Lejeuneaceae. Beih. Nova Hedwigia 71: 199-201.
Gradstein, S.R. and E.W. Jones. 1982. Schiffneriolejeunea fragilis sp. nov. J. Bryology 12:
45-47.
Gradstein, S.R. 1982. Review of: H.A. Crum & L.E. Anderson, Mosses of Eastern North America. Taxon 31: 136-137; ibid: 372-373.

1981
Gradstein, S.R., R. Matsuda and Y. Asakawa. 198l. Oil bodies and terpenoids in Lejeuneaceae and other selected Hepaticae. J. Hattori Bot. Lab. 50: 231-248.
Gradstein, S.R. and L. Terken. 198l. Studies on Lejeuneaceae subfam. Ptychanthoideae VI. A revision of Schiffneriolejeunea sect. Saccatae from Asia. Occ. Pap. Farlow Herb. 16: 71-81.
Inoue, H., Y. Asakawa and S.R. Gradstein. 1981. A biosystematic study of Nipponolejeunea. Bull. Nat. Sci. Mus. Tokyo, B, 7: 202-210.
Inoue, H., Y. Asakawa and S.R. Gradstein. 198l. A biosystematic study of Neohattoria herzogii. Bull. Nat. Sci. Mus. Tokyo, B, 7: 23-30.
Geissler, P. and S.R. Gradstein. 1981. On a small collection of living Lejeuneaceae from Peru. Candollea 36: 119-130.
Gradstein, S.R. and R. Grolle. 1981. Mastigolejeunea undulata sp. nov. Mensch, Kultur und Umwelt im Zentralen Bergland von West Neuguinea 7: 12-14.
Slageren, M.W. van, and S.R. Gradstein. 1981. Studies on Lejeuneaceae subfam. Ptychanthoideae VII. Paraphyllia in Brachiolejeunea laxifolia. J. Bryology 11: 463-466.
Gradstein, S.R. 1981. Review of: C.A. Stace, Plant Taxonomy and Biosystematics. Taxon 30: 722.
Gradstein, S.R. 1981. Review of: M.C. Kellman, Plant Geography. Acta Bot. Neerl. 30: 330.

1980
Landwehr, J., S.R. Gradstein and H. van Melick 1980. Atlas Nederlandse Levermossen. W.J. Thieme, Zutphen, 287 p.
De Zuttere, Ph., G. Raeymaekers and S.R. Gradstein. 1980. Lophozia wenzelii, espèce nouvelle pour la Belgique et Marsupella sprucei, seconde récolte Belge. Dumortiera 14/15: 1-5.
Inoue, H. and S.R. Gradstein. 1980. A review of the genus Plagiochila in the Galapagos Islands. Bull. Nat. Sci. Mus. Tokyo, B, 6: 7-22.
Gradstein, S.R. and H. Inoue. 1980. Studies on Lejeuneaceae subfam. Ptychanthoideae V. A review of the species from Ceylon. Bull. Nat. Sci. Mus. Tokyo, B, 6: 23-32.
Gradstein, S.R. 1980. Review of: G.C.E. Clarke & J.G. Duckett, Bryophyte Systematics. Taxon 29: 678-679.

1979
Gradstein, S.R. "1979". The genera of Lejeuneaceae: past and present. In: E.C.G. Clarke and J.G. Duckett (eds.), Modern approaches to Bryophyte Systematics, p. 83-107. Academic Press, London.
Gradstein, S.R. and W.H.A. Hekking. 1979. Studies on Colombian Cryptogams IV. A catalogue of the Hepaticae of Colombia. J. Hattori Bot. Lab. 45: 93-144.
Gradstein, S.R. 1979. Directory of Bryologists and Bryological Research. Regnum Vegetabile vol. 99, 81 p.
Gradstein, S.R. "1979". Holostipae. In: D. Griffin III (ed.), Guia preliminar para as Briofitas frequentes em Manaus e adjacencias. Acta Amazonica 9: 36-37.
Gradstein, S.R. 1979. Vegetation zonation and bryophyte distribution on the Galapagos Islands. Abstr. Bot. Budapest Suppl. 3: 47-49.
Gradstein, S.R. and P. Geissler. 1979. Soirée musicale. Villa "La Chène", Geneva, 3 p.

1978
Gradstein, S.R. and H.J. Sipman. 1978. Taxonomy and world distribution of Campylopus introflexus and C. pilifer (= C. polytrichoides): a new synthesis. The Bryologist 8l: 114-121.
Gradstein, S.R. 1978. Oil bodies in liverworts. Acta Bot. Neerl. 27: 425-426.

1977
Gradstein, S.R., A.M. Cleef and M.H. Fulford. 1977. Oil body structure and ecological distribution of selected species of Andean Jungermanniales. Proc. Kon. Akad. Wetensch. C, 80: 377-420.
Gradstein, S.R. 1977. Studies on Lejeuneaceae subfam. Ptychanthoideae IV. Verdoornianthus, a new genus from Amazonia. The Bryologist 80: 606-611.
Gradstein, S.R. and J.H. Smittenberg. 1977. The hydrophilous vegetation of Western Crete. Vegetatio 34: 65-86.
Gradstein, S.R. 1977. Lijst van de Nederlandse levermossen. Lindbergia 4: 151-156.
Gradstein, S.R. 1977. Obituary: Peter Arnold Florschütz (1923-1976). The Bryologist 80: 395-398.
Gradstein, S.R. and W.V. Rubers. 1977. Verslag van de voorjaarsexcursie op 3,4 en 5 mei 1975 naar de West-Betuwe. Buxbaumiella 6: 4-27.
Gradstein, S.R. and G.B.A. van Reenen. 1977. List of revised names to: S.M. MacVicar, The students Handbook of British Hepaticae. Institute of systematic Botany, Utrecht, 12 p.
Weber, W.A., S.R. Gradstein and H.J. Sipman. 1977. Bryophytes and lichens of the Galapagos Islands. Noticias de Galapagos 26: 7-11.
Gradstein, S.R. and W.V. Rubers. 1977. Verslag van de voorjaarsexcursie op 3, 4 en 5 mei 1975 naar de West-Betuwe. Buxbaumiella 6: 4-27.

1976
Iwatsuki, Z., D.H. Vitt and S.R. Gradstein 1976. A Guide to the Bryological Herbaria of the World. Bryophytorum Bibliotheca Vol. 8, 144 p.
Gradstein, S.R. 1976. Review of: E.J. Bonnot, Les problèmes modernes de la Bryologie. Taxon 25: 369-370.

1975
Gradstein, S.R. 1975. A Monograph of the Genus Acrolejeunea. Bryophytorum Bibliotheca Vol. 4, 216 p.
Gradstein, S.R., W.V. Rubers and H.J. Sipman. 1975. Lophozia perssonnii Buch & S. Arnell in Nederland. Lindbergia 3: 119-120.
Gradstein, S.R. and D.M. Vital. 1975. On Myriocoleopsis Schiffn. Lindbergia 3: 39-45.
Gradstein, S.R. 1975. Review of: H.Inoue, Illustrations of Japanese Hepaticae. Taxon 24: 257.

1974
Gradstein, S.R. 1974. Studies on Lejeuneaceae subfam. Ptychanthoideae II. Two remarkable species of Caudalejeunea: C. grolleana sp. nov. and C. cristiloba (Steph.) comb. nov. Acta Bot. Neerl. 23: 333-343.
Gradstein, S.R. 1974. Studies on Lejeuneaceae subfam. Ptychanthoideae I. Nomenclature and taxonomy of Ptychocoleus, Acrolejeunea and Schiffneriolejeunea. J. Hattori Bot. Lab. 38: 327-336.
Gradstein, S.R. 1974. Developpement du sporophyte et position taxonomique du genre Odontoschisma Dum. Bull. Soc. Bot. France 121: 67-70.

1973
Gradstein, S.R. 1973. Directory of Bryologists and Bryological Research. Regnum Vegetabile vol. 88, 67 p.
Gradstein, S.R. 1973. Observations on sporophyte developpement in Odontoschima prostratum. The Bryologist 75: 569-574.
Gradstein, S.R. and H. van Melick. 1973. Nogmaals Bryum gemmiparum en Bryum bicolor. Lindbergia 2: 132.
Gradstein, S.R. and P.A. Florschütz. 1973. Review of: Z. Iwatsuki & M. Mizutani, Coloured illustrations of Bryophytes of Japan. Taxon 22: 170.

1972
Florschütz, P.A., S.R. Gradstein and W.V. Rubers. 1972. The spreading of Fissidens crassipes Wils. in the Netherlands. Acta Bot. Neerl. 21: 174-179.
Gradstein, S.R. 1972. A note on the bryophytes of the Maltese Islands. Acta Bot. Neerl. 21: 67-70.
Gradstein, S.R. and H. van Melick. 1972. Bryum gemmiparum De Not. nieuw voor Nederland. Lindbergia 1: 243-245.
Gradstein, S.R. 1972. Een taxonomische studie van Odontoschima denudatum en O. sphagni in Nederland. Lindbergia l: 234-240.

1971
Gradstein, S.R. 1971. New or otherwise interesting Bryophytes from Crete. Revue Bryol. Lichénol. 37: 663-679.
Gradstein, S.R., J.J. den Held and P. Wolff. 1971. Revisie van de Nederlandse soorten van het Bryum erythrocarpum complex. Lindbergia 1: 92-97.
Gradstein, S.R., H.H. Heemstra and J.A.J.M. Stalpers. 197l. List of revised names to: H.N. Dixon, The students Handbook to British Mosses. Inst. of Syst. Botany, Utrecht, 34 pp (second edition 1973).

1970
Gradstein, S.R. 1970. Dicranum tauricum Sapehin bij Oisterwijk, met opmerkingen over het genus Orthodicranum Loeske. Buxbaumia 23: 6l-64.
Gradstein, S.R. 1970. Mylia taylori (Hook.) Gray (nog) niet in Nederland. Buxbaumia 23: 73-74.
Gradstein, S.R. 1970. Bryum klinggraeffii Schimp. in Nederland. Buxbaumia 23: 56.

1968
Gradstein, S.R. 1968. Review of : R.M. Schuster, The Hepaticae and Anthocerotae of North America. Taxon 17: 429-430.
Gradstein, S.R. and J.H. Smittenberg.1968. Hygrophiele vegetaties op Kreta. Contactblad voor oecologen 4: 11-12.
Gradstein, S.R. and J.H. Smittenberg. 1968. Bron-, beek- en moerasvegetaties van West Kreta. Inst. Syst. Plantk., Utrecht, 87 pp.
Gradstein, S.R. and J.H. Kern. 1968. A new Carex from Crete. Acta Bot. Neerl. l7: 242-247.

1961
Gradstein, S.R. Hookeria lucens en Trichocolea tomentella in het Bunderbos. Buxbaumia 15: 60-61.

Series edited

Flora Neotropica, Volumes 50, 53-54, 57-58, 62, 65, 69, 74, 78, etc. New York Botanical Garden Press, since 1987

Bryophytorum Bibliotheca, Volumes 34-60. J. Cramer Verlag, Stuttgart, since 1987

Tropical Bryology, Volumes 1-10. Duisburg-Utrecht, 1989-1995

The Bryological Times, nrs. 50-70. Edmonton, St. Louis, Geneva, Utrecht, Praha, Moscow, Bejing, Tokyo, Canberra, 1989-1993.

Bryophyta Neotropica Exsicata, Fascicles I-VIII, nrs. 1-400. Herbarium Utrecht, 1984-1998.

Studies on Colombian Cryptogams, 1-40. Herbarium Utrecht, 1982, 1983, 1990.