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Université Pierre et Marie Curie
Département Systématique et Evolution
Institut de Systématique, Évolution, Biodiversité (ISYEB)
Sorbonne Universités
Équipe INtéractions et Evolution VEgétales et Fongiques - INEVEF
57 Rue Cuvier , CP48
75005 Paris, France
Email :
☏ +33 (0)1 40 79 80 62

Current position

Professor, Deputy-Director of ISYEB (Institute of Systematics, Evolution and Biodiversity).
Member of the resarch team INtéractions et Evolution VEgétales et Fongiques - INEVEF .

  •  Research

  • Evolutionary botanist

    Main questions and projects

    - Taxonomy & phylogeny of diverse studied plant models (see below)

    - Anatomy and morphology evolution in ferns

    - Diversity and history of epiphytism (with focus on ferns, especially Hymenophyllaceae ; projects on orchids in progress)

    - Diversity and history of flora of oceanic islands (with focus on Mascarenes and lesser Antilles)

    Plant models (as the project leader (*) or as a collaborative contributor)

    (*) Hymenophyllaceae (filmy ferns), collab. with S. Hennequin (UPMC ISYEB), G. Rouhan (MNHN ISYEB), F. Rakotondrainibe (MNHN ISYEB), A. Ebihara (Tokyo), H. Schneider (NHM), V. Deblauwe (ULB), B. Senterre (Seychelles), K. Pynee (Mauritius), Y. Robert & E. Grangaud (La Réunion)…

    African angraecoid orchids, collab. with T. Stevart (MoBot), S. Verlynde (MoBot), V. Droissart (IRD, AMAP Montpellier) – co-supervision with T. Stevart of P. Descourvières’ thesis on Diaphananthe systematics.

    Dombeyoideae (Malvaceae), collab. with T. Le Péchon (La Réunion), S. François (SPN, MNHN)

    Eriocaulaceae (Poales), collab. with L. Echternacht (Ouro Preto, Brazil), P. Sano (USP, Brazil)

    Thalloid liverworts (genera Riccia and Riccardia), collab. with C. Reeb (UPMC ISYEB) - co-supervision with C. Reeb of L. Rabeau’s thesis on Riccia systematics.

    Palaeozoic ferns, collab. with J. Galtier (AMAP Montpellier), co-supervision with J. Galtier of A. Corvez’ thesis (defense in 2012)

    Key-words, techniques

    Phylogeny, systematics, morphology, anatomy, molecular methods, bio-statistics, comparative biology.

    Main results

    • Taxonomy and classification of Hymenophyllaceae
      The last global revision of the family has been published in 2006 (6) as a result of an international collaborative work I have initiated in 1993.
      Many publications clarifying the main relationships within the family or focusing on some local taxa, especially in Mascarene archipelago (1, 3, 4, 5, 7, 11, 17, 21, 24, 25, 28). Revision in progress on Comorian, Malagasy, Seychellois and African species.
    • Taxonomy and classification of African angraecoid orchids. Genus Bolusiella (18), new Rhipidoglossum species (19).
    • Taxonomy, classification and history of Mascarene Dombeyoideae. From the T. Le Péchon’s thesis I have supervised and further related works (9, 12, 13, 20).
    • Taxonomy and classification of Brazilian Eriocaulaceae. From the L. Echternacht’s thesis I have co-supervised and further related works (15, 23, 26).
    • Evolution of epiphytism in ferns and especially in Hymenophyllaceae. A review on the subject (10) ; and by evidencing relationships between morphology and anatomy regression and colonial epiphytism (2, 14, 22).
    • Origin and evolution of the megaphylly in Euphyllophytes and a focus on the fern megafrond.
      From the A. Corvez’ thesis I have co-supervised (16).

  •  Teaching :

  • Full teaching position (more than 220h/year) at UPMC.

    Many courses from Bachelor to Master levels in :
    Evolutionary botany, Ecology, Diversity and evolution of Eukaryotes, Theoretical systematics and phylogenetic methods

    Local coordinator of the International Erasmus Mundus Master program Tropimundo

  •  Selected publications (list not exhaustive) :

  • - (35) Almeida, T. E., Salino, A., Dubuisson, J.-Y., & Hennequin, S. (2017). Adetogramma (Polypodiaceae), a new monotypic fern genus segregated from Polypodium. Phytokeys, (78), 109 131.

    - (34) Ponce, M. M., Del Rio, C., Ebihara, A., & Dubuisson, J.-Y. (2017). Discussion on taxonomy of the fern genera Crepidomanes and Polyphlebium (Hymenophyllaceae) in Argentina and south-eastern South America, and description of a new local variety for Crepidomanes pyxidiferum. Botany Letters, 164(1), 5 18.

    - (33) Rabeau, L., Gradstein, S. R., Dubuisson, J.-Y., Nebel, M., Quandt, D., & Reeb, C. (2017). New insights into the phylogeny and relationships within the worldwide genus Riccardia (Aneuraceae, Marchantiophytina). European Journal of Taxonomy, 273, 1 26.

    - (32) Saïd, A. H., Hennequin, S., Rouhan, G., & Dubuisson, J.-Y. (2017). Disentangling the diversity and taxonomy of Hymenophyllaceae (Hymenophyllales , Polypodiidae) in the Comoros. European Journal of Taxonomy, 313, 1 53.

    - (31) Senterre, B., Rouhan, G., Morel, C., & Dubuisson, J.-Y. (2017). New species and records in the fern genus Didymoglossum for the flora of Seychelles, with notes on the Southeast Asian D. motleyi complex (Hymenophyllaceae). Phytotaxa, 292(3), 201 217.

    - (30) PG I. (2016). A community-derived classification for extant lycophytes and ferns : PPG I. Journal of Systematics and Evolution, 54(6), 563 603.

    - (29) Dubuisson, J.-Y., Bauret, L., Grall, A., Li, T., Ebihara, A., & Hennequin, S. (2016). Discussion on the taxonomy of African fern Abrodictyum rigidum (Sw.) Ebihara & Dubuisson and description of two new Abrodictyum C.Presl species (Hymenophyllaceae, Polypodiidae) for the Afro-Malagasy region. Phytotaxa, 284(3), 151.

    - (28) Dubuisson, J.-Y., Hennequin, S., Droissart, V. & Deblauwe, V. (2016). Hymenophyllum senterreanum Dubuisson & Deblauwe, sp. nov. (Hymenophyllaceae) and its relatives in western Central Africa. Phytotaxa 257 : 287-294.

    - (27) Soulebeau, A., Aubriot X., Gaudeul, M., Rouhan, G., Hennequin, S., Haevermans, T., Dubuisson, J.-Y. & Jabbour, F. (2015). The hypothesis of adaptive radiation in evolutionary biology : hard facts about a hazy concept. Organisms Diversity & Evolution DOI:10.1007/s13127-015-0220-z.

    - (26) Echternacht, L., Sano, P. T., & Dubuisson, J.-Y. (2015). Taxonomic Study of Comanthera subg. Thysanocephalus (Eriocaulaceae). Systematic Botany 40 : 136–150.

    - (25) Bauret, L., Hennequin, S., Rouhan, G., Ebihara, A., & Dubuisson, J.-Y. (2015). New circumscription of Trichomanes cupressoides Desvaux (Hymenophyllaceae), an endemic filmy fern from the Seychelles (Indian Ocean), and new insights into the genus Abrodictyum C.Presl in the western Indian Ocean. Phytotaxa 202 : 1–14.

    - (24) Dubuisson, J.-Y., Hennequin, S. & Robert, Y. (2014). Crepidomanes inopinatum var. tamonii (Hymenophyllaceae), a new lowland variety endemic to semi-dry forests in La Réunion. Phytotaxa 173 : 163–167.

    - (23) Echternacht, L., Sano, P. T., Bonillo, C., Cruaud, C., Couloux, A., & Dubuisson, J.-Y. (2014). Phylogeny and taxonomy of Syngonanthus and Comanthera (Eriocaulaceae) : Evidence from expanded sampling. Taxon 63 : 47–63.

    - (22) Dubuisson, J.-Y., Bary, S., Ebihara, A., Carnero-Diaz, E., Boucheron-Dubuisson, E., & Hennequin, S. (2013). Epiphytism, anatomy and regressive evolution in trichomanoid filmy ferns (Hymenophyllaceae). Botanical Journal of the Linnean Society 173 : 573–593.

    - (21) Dubuisson, J.-Y., Rouhan, G., Grall, A., Hennequin, S., Senterre, B., Pynee, K., & Ebihara, A. (2013). New insights into the systematics and evolution of the filmy fern genus Crepidomanes (Hymenophyllaceae) in the Mascarene Archipelago with a focus on dwarf species. Acta Botanica Gallica 160 : 173–194.

    - (20) Le Péchon, T., Pausé, J.-B., Dubuisson, J.-Y., Gigord, L. D. B., Haevermans, A., Haevermans, T., & Humeau, L. (2013). Dombeya formosa (Malvaceae s. l.) : A new species endemic to La Réunion (Indian Ocean) based on morphological and molecular evidence. Systematic Botany 38 : 424–433.

    - (19) Descourvières, P., Dubuisson, J.-Y., Droissart, V., Cribb, P., Cawoy, V., Simo-Droissart, M., Sonké, B. & Stévart, T. (2013). Rhipidoglossum montealenense (Orchidaceae), a new species from Equatorial Guinea and Cameroon. Plant Ecology and Evolution 146 : 389-394.

    - (18) Verlynde, S., Dubuisson, J.-Y., Stévart, T, Simo, M., Geerinck, D., Sonké, B., Cawoy V., Descourvières, P. & Droissart, V. (2013). Taxonomic revision of the genus Bolusiella (Orchidaceae), with a new species from Cameroon, Burundi and Rwanda. Phytotaxa 114:1-22.

    - (17) Pynee, K., Hennequin, S., Echternacht, L. & Dubuisson, J.-Y. (2012). A new local variety of Crepidomanes minutum (Hymenophyllaceae) in the Mascarene Archipelago (Indian Ocean) and a new record for Mauritius. Phytotaxa 62 : 25–30.

    - (16) Corvez, A., Barriel, V. & Dubuisson, J.-Y. (2012). Diversity and evolution of the megaphyll in Euphyllophytes : Phylogenetic hypotheses and the problem of foliar organ definition. Comptes Rendus Palevol 11 : 403-418.

    - (15) Echternacht, L., Sano, P. T., Trovó, M. & Dubuisson, J.-Y. (2011).
    Phylogeny of the Brazilian micro-endemic Paepalanthus subgenus Xeractis (Eriocaulaceae) inferred from morphology. Botanical Journal of the Linnean Society. 267 : 137-152.

    - (14) Dubuisson, J.-Y., Hennequin, S., Bary, S., Ebihara, A. & Boucheron-Dubuisson, E. (2011). Anatomy diversity and regressive evolution in trichomanoid filmy ferns (Hymenophyllaceae) : a phylogenetic approach. Comptes Rendus Biologie 334 : 880-895.

    - (13) Le Péchon, T., Baider, C., Gigord, L. B. D., Ravet-Haevermans, A. & Dubuisson, J.-Y. (2011). Dombeya sevathiani (Malvaceae) : a new critically endangered species endemic to Mauritius (Indian Ocean). Phytotaxa 24 : 1-10.

    - (12) Le Péchon T., Haevermans T., Cruaud C., Couloux A., Dubuisson J.-Y. & Gigord L. B. D. (2010). Multiple colonizations from Madagascar and converged acquisition of dioecy in the Mascarene Dombeyoideae (Malvaceae) as inferred from chloroplast and nuclear DNA sequence analyses. Annals of Botany 106 : 343-357.

    - (11) Ebihara, A., Nitta, J. H., Lorence, D. & Dubuisson, J.-Y. (2009). New records of Polyphlebium borbonicum, an African filmy fern, in the New World and Polynesia. American Fern Journal 99 : 200-206.

    - (10) Dubuisson, J.-Y., Hennequin, S. & Schneider, H. (2009). Epiphytism in ferns : diversity and evolution. Comptes Rendus Biologies 332 : 120-128.

    - (9) Le Péchon, T., Cao, N., Dubuisson, J.-Y. & Gigord, L. B. D. (2009). Systematics of Dombeyoideae (Malvaceae) in the Mascarene archipelago (Indian Ocean) inferred from morphology. Taxon 58 : 519-531.

    - (8) Hennequin, S., Schuettpelz, E., Pryer, K. M., Ebihara, A. & Dubuisson, J.-Y. (2008). Divergence times and the evolution of epiphytism in filmy ferns (Hymenophyllaceae) revisited. International Journal of Plant Sciences 169 : 1278-1287.

    - (7) Ebihara A., Iwatsuki K., Ito M., Hennequin S. & Dubuisson J.-Y.
    (2007). A global molecular phylogeny of the fern genus Trichomanes (Hymenophyllaceae) with special reference to stem anatomy, Botanical Journal of the Linnean Society 155 : 1-27.

    - (6) Ebihara, A., Dubuisson, J.-Y., Iwatsuki, K., Hennequin, S. & Ito, M. (2006). A taxonomic revision of the Hymenophyllaceae. Blumea 51 : 221-280.

    - (5)Rouhan, G., Dubuisson, J-Y., Rakotondrainibe, F., Motley, T.J., Mickel, J.T., Labat, J.-N. & Moran, R.C. (2004). Molecular phylogeny of the fern genus Elaphoglossum (Elaphoglossaceae) based on chloroplast non-coding DNA sequences : contributions of species from the Indian Ocean area. Molecular Phylogenetics and Evolution 33 : 745-763.

    - (4) Dubuisson, J.-Y., Hennequin, S., Douzery, E. J. P, Cranfill, R. B., Smith, A. R. & Pryer, K. M. (2003). rbcL phylogeny of the fern genus Trichomanes (Hymenophyllaceae), with special reference to neotropical taxa. International Journal of Plant Sciences 164 : 753-761.

    - (3) Hennequin, S., Ebihara, A., Ito, M., Iwatsuki, K. & Dubuisson, J.-Y. (2003). Molecular systematics of the fern genus Hymenophyllum s.l. (Hymenophyllaceae) based on chloroplastic coding and noncoding regions. Molecular Phylogenetics and Evolution 27 : 283-301.

    - (2) Dubuisson, J.-Y., Hennequin, S., Rakotondrainibe, F. & Schneider, H. (2003). Ecological diversity and adaptive tendencies in the tropical fern Trichomanes L. (Hymenophyllaceae) with special reference to climbing and epiphytic habits. Botanical Journal of the Linnean Society 142 : 41-63.

    - (1) Pryer, K. M, Smith, A. R., Hunt, J. S. & Dubuisson, J.-Y. (2001). rbcL data reveal two monophyletic groups of filmy ferns (Filicopsida : Hymenophyllaceae). American Journal of Botany 8 : 1118-1130.

  •  Publications before 2017

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