Published October 15, 2021 | Version v1
Taxonomic treatment Open

Abrodictyum dregei Dubuisson & Rouhan 2021, comb. nov.

  • 1. Institut de Systématique, Evolution, Biodiversité (ISYEB), Sorbonne Université, MNHN, CNRS, EPHE, Université des Antilles, CP 48, 57 rue Cuvier, 75005 Paris, France.
  • 2. Island Biodiversity & Conservation Centre, associated with the University of Seychelles, Anse Royale, Mahé, P. O. Box 1348, Seychelles. & Evolutionary Biology & Ecology - CP 160 / 12, Université Libre de Bruxelles, 50 Av. F. Roosevelt, 1050 Bruxelles, Belgium.
  • 3. Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d'Histoire naturelle, CNRS, SU, EPHE, Université des Antilles, CP 39, 57 rue Cuvier, 75005 Paris, France.

Description

Abrodictyum dregei (Bosch) Dubuisson & Rouhan, comb. nov., Fig. 2.

Trichomanes dregei Bosch (1858: 372). Type citation: Hab. Cap. bon spei! Drège; Port Natal! Gueinbius. Type:— SOUTH AFRICA. Transkei, Lusikisiki, without date, J.F. Drège s.n. (lectotype S, S-P-18091!, 4 top specimens of the sheet only, here designated; isolectotypes BM, K, K000435631!, K000435632!). Remaining syntype:— SOUTH AFRICA. Port Natal, without date, W. Gueinzius s.n. (S, S-P-18090! 4 bottom specimens of the sheet only).

Note:—The specimen B20 0106572 (B) may be eligible as an isolectotype following Roux (2009), but this specimen has not been retrieved. Roux (2009) also suspected the ‘holotype’ to be present at P, but we did not succeed in finding it, hence we designate here the S specimen as lectotype, in accordance with the note of Schelpe on the sheet (Fig. 2). In addition, the S specimen is better preserved than the K duplicates. The collector of the remaining syntype, cited as “Gueinbius” by van den Bosch, is likely a misspelling for Wilhelm Gueinzius, as correctly written on the herbarium sheet (Fig. 2); Wilhelm Gueinzius is known as a German naturalist who indeed collected in South Africa and precisely in Natal around 1841.

= Trichomanes rigidum Sw. var. lugubre Christ (1901: 849). Type:— DEMOCRATIC REPUBLIC OF CONGO. Kisantu, without date, J.B. Gillet s.n. (holotype BR, BR 0000013468675!).

= Trichomanes rigidum Sw. var. annobonense Brause (Brause & Hieronymus 1915: 378). Type:— EQUATORIAL GUINEA. Annobon Island: Summit of Santa Mina, 650 m, October 1911, G.W.J. Mildbraed 6700 (holotype B, BW 20 0093175!).

= Abrodictyum pseudorigidum Bauret & Dubuisson (Dubuisson et al. 2016: 161), nom. illeg. superfl.. TYPE:— MADAGASCAR. Fianarantsoa: Ambatomboay, RNI d’Andringitra versant E, 40 km au Sud d’Ambalavao, sur les berges d’un affluent de la rivière Sahavatoy, 24 May 1995, F . Rakotondrainibe 2708 (holotype P, P00059914!).

Notes

Published as part of Dubuisson, Jean-Yves, Nivart, Adele, Senterre, Bruno & Rouhan, Germinal, 2021, New taxonomic treatment for Trichomanes parvulum Poir. and T. dregei Bosch (Hymenophyllaceae, Polypodiidae), pp. 119-125 in Phytotaxa 523 (1) on pages 123-124, DOI: 10.11646/phytotaxa.523.1.9, http://zenodo.org/record/5572061

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Linked records

Additional details

Biodiversity

Collection code
B , BR , E , F , P
Event date
1995-05-24
Family
Hymenophyllaceae
Genus
Abrodictyum
Kingdom
Plantae
Material sample ID
BR 0000013468675 , BW 20 , P00059914
Order
Hymenophyllales
Phylum
Tracheophyta
Scientific name authorship
Dubuisson & Rouhan
Species
dregei
Taxonomic status
comb. nov.
Taxon rank
species
Type status
holotype
Verbatim event date
1995-05-24
Taxonomic concept label
Abrodictyum dregei (den, 1858) sec. Dubuisson, Nivart, Senterre & Rouhan, 2021

References

  • Bosch, R. B. van den (1858 [1859]) Synopsis Hymenophyllacearum, monographiae hujus ordinis prodromus. Nederlandsch kruidkundig archief 4: 341 - 419. https: // doi. org / 10.5962 / bhl. title. 41482
  • Roux, J. P. (2009) Synopsis of the Lycopodiophyta and Pteridophyta of Africa, Madagascar and neighbouring islands. Strelitzia 23: 1 - 293.
  • Christ, H. (1901) Acotyledones vasculares. In: de Wildeman, E. & Durand, T. (Eds.) Plantae Gilletianae Congolensis. Bulletin de l'Herbier Boissier, ser. 2 1 (9): 848 - 851.
  • Brause, G. G. W. & Hieronymus, G. H. E. W. (1915) Pteridophyta africana nova vel non satis cognita. Botanische Jahrbucher 53: 356 - 433.
  • 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: 151 - 168. https: // doi. org / 10.11646 / phytotaxa. 284.3.1