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Thomas Janssen
Thomas Janssen
Verified email at hu-berlin.de
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The age of major monocot groups inferred from 800+rbcL sequences
T Janssen, K Bremer
Botanical Journal of the Linnean Society 146 (4), 385-398, 2004
3932004
Neoendemism in Madagascan scaly tree ferns results from recent, coincident diversification bursts
T Janssen, N Bystriakova, F Rakotondrainibe, D Coomes, JN Labat, ...
Evolution: International Journal of Organic Evolution 62 (8), 1876-1889, 2008
1032008
Exploring the evolution of humus collecting leaves in drynarioid ferns (Polypodiaceae, Polypodiidae) based on phylogenetic evidence
T Janssen, H Schneider
Plant Systematics and Evolution 252 (3-4), 175-197, 2005
822005
New insights into the phylogeny of Pleopeltis and related Neotropical genera (Polypodiaceae, Polypodiopsida)
EM Otto, T Janßen, HP Kreier, H Schneider
Molecular Phylogenetics and Evolution 53 (1), 190-201, 2009
692009
Climate and the distribution of grasses in West Africa
G Bocksberger, J Schnitzler, C Chatelain, P Daget, T Janssen, M Schmidt, ...
Journal of Vegetation Science 27 (2), 306-317, 2016
512016
Origin and diversification of African ferns with special emphasis on Polypodiaceae
T Janssen, HP Kreier, H Schneider
Brittonia 59 (2), 159-181, 2007
512007
Gondwanan origin of major monocot groups inferred from dispersal-vicariance analysis
K Bremer, T Janssen
Aliso: A Journal of Systematic and Evolutionary Botany 22 (1), 22-27, 2006
472006
Phylogenetic Relationships of the Enigmatic Malesian Fern Thylacopteris (Polypodiaceae, Polypodiidae)
H Schneider, T Janssen, P Hovenkamp, AR Smith, R Cranfill, CH Haufler, ...
International Journal of Plant Sciences 165 (6), 1077-1087, 2004
422004
The West African Vegetation Database
M Schmidt, T Janßen, S Dressler, K Hahn, M Hien, S Konaté, AM Lykke, ...
Biodivers Ecol 4, 105-110, 2012
302012
Key innovations versus key opportunities: identifying causes of rapid radiations in derived ferns
H Schneider, HP Kreier, T Janssen, E Otto, H Muth, J Heinrichs
Evolution in action, 61-75, 2010
282010
Phylogenetic relationships of the fern genus Christiopteris shed new light onto the classification and biogeography of drynarioid ferns
H Schneider, HP Kreier, P Hovenkamp, T Janssen
Botanical Journal of the Linnean Society 157 (4), 645-656, 2008
242008
Addressing data property rights concerns and providing incentives for collaborative data pooling: the West African Vegetation Database approach
T Janßen, M Schmidt, S Dressler, K Hahn, M Hien, S Konaté, AM Lykke, ...
Journal of Vegetation Science 22 (4), 614-620, 2011
232011
A revision of the indusiate scaly tree ferns (Cyatheaceae, Cyathea subgen. Alsophila sect. Alsophila) in Madagascar, the Comoros and the Seychelles
T Janssen, F Rakotondrainibe
Adansonia 30 (2), 221-376, 2008
232008
A complete digitization of German herbaria is possible, sensible and should be started now
T Borsch, AD Stevens, E Häffner, A Güntsch, WG Berendsohn, ...
Research Ideas and Outcomes 6, e50675, 2020
212020
Plant diversity, functional traits and soil conditions of grass savannas on lateritic crusts (bowé) in south eastern Burkina Faso
A Zwarg, M Schmidt, T Janßen, K Hahn, G Zizka
Flora et Vegetatio Sudano-Sambesica 15, 15-24, 2012
202012
Conservation priorities for tree ferns (Cyatheaceae) in Sri Lanka
RHG Ranil, D Pushpakumara, T Janssen, CR Fraser-Jenkins, ...
Taiwania 56 (3), 201-209, 2011
172011
Diversité des Fougères et leurs alliées le long du gradient altitudinal au sein de l’écosystème forestier des montagnes du Parc National de Kahuzi-Biega (RD Congo)
JD Mangambu Mokoso, F Muhashy Habiyaremye, T Janssen, ...
International Journal of Environmental Studies 70 (2), 259-283, 2013
142013
An update of the revision of Cyathea subgen. Alsophila sect. Gymnosphaera (Cyatheaceae) in Madagascar and the Comoros including a discussion of putative hybridization events
T Janssen, F Rakotondrainibe
Adansonia 29 (2), 195-213, 2007
142007
Cyathea srilankensis Ranil (Cyatheaceae): A new tree fern species from Sri Lanka
RHG Ranil, D Pushpakumara, T Janssen, DSA Wijesundara, ...
American Fern Journal 100 (1), 39-44, 2010
122010
Cyathea sledgei (Cyatheaceae): a new species of tree-fern from Sri Lanka
RHG Ranil, D Pushpakumara, T Janssen, CR Fraser-Jenkins, ...
Fern Gazette 18 (7), 320, 2010
82010
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