Asplenium stuhlmannii Hieronymus (1895: 83)

Fischer, Eberhard & Lobin, Wolfram, 2023, Synoptic Revision of Aspleniaceae (Asplenium, Hymenasplenium) of Rwanda, Phytotaxa 608 (1), pp. 1-65 : 44-45

Asplenium stuhlmannii Hieronymus (1895: 83) .

Lectotype (designated by Tardieu-Blot 1964a: 213):— TANZANIA. Kanesse (= Kanssenene), 14 November 1890, F.Stuhlmann 953 ( B 20 0023194!), syntypes. TANZANIA. Kanesse (= Kanssenene), 14 November 1890, F.Stuhlmann 936 ( B 20 0023193!); Towalio, im Westen des Njansa (= Victoria Lake ), 6 December 1890, F.Stuhlmann 1179 ( B 20 0023195!), Bukoba, 1892, F.Stuhlmann 3246 ( B 20 0023197!).

Specimens seen:— Eastern Province: Biumba (= Byumba), Région du Mutara, route Biumba (= Byumba) – Kakitumba (=Kagitumba)à proximité de Mimuli,réserve IRSAC, 2October1956, G.Troupin 2767 ( BR0000016316799 ) ; Biumba, Région du Mutara , env. de Mimuli, 25 October 1957, G.Troupin 5093 ( BR0000016316836 ) ; Biumba, Région du Mutara, env. de Mimuli, colline Nyakagenge , 27 May 1957, G.Troupin 32367 ( BR0000016316805 ) ; Biumba, Région du Mutara, env. de Mimuli, colline Nyakagenge , 26 September 1957, G.Troupin 4212 ( BR0000016316829 ) ; Biumba, Région du Mutara , env. de Mimuli, 25 October 1957, G.Troupin 5093 ( BR0000016316843 ) ; Biumba, Région du Mutara , env. de Mimuli, 10 January 1958, G.Troupin 5710 ( BR0000016316850 ) ; Biumba, Région du Mutara, env. de Mimuli, colline Nyakagenge , 26 May 1957, G.Troupin 3276 ( BR0000016316812 ) ; Ngarama rocks, December 2021, E.Fischer s.n. ( KOBL) ; Rugarama , December 2007, E.Fischer s.n. ( KOBL) ; Nyarubuye , quartzitic rocks, March 2021, E.Fischer s.n. ( KOBL) .

First recorded for Rwanda: — Pichi Sermolli (1985: 152).

Habitat: —Quartzitic or granitic rocks, elev. 1600–1800 m.

Distribution in Rwanda:—Eastern Province: Umutara (Ngarama), Akagera, Rugarama, Nyarubuye.

General distribution: —Africa: Sudan, Uganda, Kenya, Rwanda, Burundi, Tanzania.

Note: —This species is widely distributed. The West African plants have been described as Asplenium mantoniae A.F. Braithwaite (2008: 85) , nom. illeg. (= A. irenemantoniae Viane nom. nov. [2021: 182]). Probably, the southern African plants also represent a different taxon ( Viane 2021). The material from Madagascar identified as A. stuhlmannii by Tardieu-Blot (1958: 229) belongs partly to A. blastophorum Hieronymus (1911: 378) (see Viane 2021: 49) or A. pseudostuhlmannii Viane (2021: 181) .

The orthography of the collecting sites has been verified by Viane (2021: 182).