Abrodictyum pseudorigidum Bauret & Dubuisson

Ahamada H. Saïd, Sabine Hennequin, Germinal Rouhan & Jean-Yves Dubuisson, 2017, Disentangling the diversity and taxonomy of Hymenophyllaceae (Hymenophyllales, Polypodiidae) in the Comoros, European Journal of Taxonomy 313, pp. 1-53 : 10

Abrodictyum pseudorigidum Bauret & Dubuisson

Abrodictyum pseudorigidum Bauret & Dubuisson in Dubuisson et al. , Phytotaxa 284: 161 (2016). – Type: Madagascar, F. Rakotondrainibe 2708 (holo-: P00059914!).

‘ Trichomanes dregei Bosch’, Nederlandsch kruidkundig archief 4: 372 (1858). – Type: South Africa, Natal, J.F. Drège s.n. (holo-: P?, not located; iso-?: S-P-18091!). Note: Van den Bosch did not provide any description for this species but only a reference to South-African Trichomanes rigidum sensu Kunze (1836) based on specimens collected by Drège. Therefore, we cannot accept this name as valid.

Trichomanes rigidum Sw. var. lugubre H.Christ , Bulletin de l’Herbier Boissier, sér. 2 1 (9): 849 (1901).

– Type: DRC, Kisantu, J.B. Gillet s.n. (holo-: BR0000013468675!).

Trichomanes rigidum Sw. var. annobonense Brause, Botanische Jahrbücher 53: 378 (1915). – Type: Equatorial Guinea, Annobon Island, G.W.J. Mildbraed 6700 (holo-: BW200093175!).

Short description

Terrestrial or lithophytic, often near streams; thick, short and erect rhizomes with robust roots and clustered erect fronds; fronds well stipitate, up to 35 cm long, mostly triangular or less often sublanceolate to narrowly ovate, tripinnate-pinnatifid, with linear uni-veined ultimate segments; sori numerous, paratactic, cylindrical, truncated to slightly bilabiate with a slightly dilated mouth.

Global distribution

Tropical Africa, Comoros, Madagascar.

Distribution in Comoros

Anjouan, Grande Comore, Mohéli.

Additional specimens examined

COMOROS: s. loc., 1885, L.Humblot 1328 (P00139639, P00312496, P01430231, P01430232, P01526319, P01526320); s. loc., s.d., L.H.Boivin s.n. (P00301468). ANJOUAN, s. loc., May 1850, L.H.Boivin s.n. (P00139623); s. loc., 1875, M.Lavanchie s.n. (P00139638); s. loc., 1875, J.M.Hildebrandt 1793 (P00139637); Mjimandra, 1 Apr. 2011, E.Bidault et al. 109 (P02439773). GRANDE COMORE, La Convalescence, versant ouest, 23 Nov. 2002, F.Rakotondrainibe et al. 6771 (P00312031); versant ouest du volcan Karthala, bois proche de Convalescence, 24 Oct. 2008, M.Pignal et al. 3381 (P02439785), M.Pignal et al. 3391 (P02439789). MOHÉLI, Forêt de Saint Antoine, 21 Sep. 1995, N.Moulaert F.099 (P01485567); Chalet St Antoine, 5 Nov. 2008, M.Pignal et al. 3473 (P00684891).