Asplenium musiraense Viane (2021: 58)

Fischer, Eberhard & Lobin, Wolfram, 2023, Synoptic Revision of Aspleniaceae (Asplenium, Hymenasplenium) of Rwanda, Phytotaxa 608 (1), pp. 1-65 : 33

Asplenium musiraense Viane (2021: 58) .

Holotype:— TANZANIA. Kagera Region, Bukoba, Toten-Insel (= Musira Island ), 13 June 1907, J.Mildbraed 36 (B-20 0012277!; isotype B-20 0012286!).

Specimens seen:— Kigali Province: Prefecture Kigali, Muryarugogo , 5 December 1981, K.A. Nowak 1331 ( BR0000015917225 ) ; Kanzenze , crête de la Nyabarongo, sur les hauteurs de Kigali, 13 March 1972, P.Auquier 2928 ( BR0000015917164 ) . Eastern Province: Kibungu, Rwinkwavu , 31 December 1967, J.Lewalle 2621 ( BR0000015917218 ) ; Parc. Nat. Akagera, mont Mutumba, Préfecture Byumba , 22 January 1980, D.Bridson 268 ( BR0000015917195 ) ; Rusumo (préfect. Kibungo), Forêt du versant raide de la vallée de l’Akagera immédiatement en aval des chutes, 16 October 1974, J.Lambinon 741611 ( BR0000015917201 ) ; P.N. Akagera. mont Mutumba, Préfecture Byumba , 9 December 1974, G.Troupin 15584 ( BR0000015917249 ) ; Parc National Akagera mont Mutumba. Préfecture Byumba , 19 August 1976, B.Runyinya 501 ( BR0000015917232 ) ; P.N. Akagera. mont Mutumba, Préfecture Byumba , 9 December 1974, G.Troupin 15585B ( BR0000015917256 ) ; dans le Gissaka – Shori, Préfecture Kibungo , 24 April 1969, G.Bouxin & M.Radoux 300 ( BR0000015917171 ) ; Parc National Akagera, colline Muhororo, Préfecture Byumba , 6 November 1969, G.Bouxin & M.Radoux 1173 ( BR0000015917188 ) ; Presque-ile Mpanga between Lac Cyambwe and Lac Mpanga , dry forest on quartzitic rocks, October 1985, E. Fischer s.n. ( KOBL) ; Mpanga N of Ibanda-Makera, dry forest W of Ibanda-Makera , 24 September 2021, E.Fischer s.n. ( KOBL) .

First recorded for Rwanda: — Pichi Sermolli (1985: 127) as Asplenium buettneri auct. non Hieron.

Habitat: —Terrestrial in submontane sclerophyllous dry forest on rocks, elev. 1400–1650 m.

Endemic status: —Albertine Rift Endemic.

Distribution in Rwanda:— Kigali Province: Muyarugogo. Eastern Province: Akagera NP, Mpanga, Nasho.

General distribution: —Africa: Eastern D.R. Congo, Uganda, Tanzania.

Note: —Hieronymus in Brause & Hieronymus (1910: 23) described A. buettneri , citing a number of herbarium specimens, none of which have been collected in Rwanda. Viane (2021) separated this material of A. buettneri into four species: A. buettneri Hieron. in Brause & Hieronymus (1910: 23) s.str. ( Ghana, South Sudan, Congo, Kenya, Tanzania and Madagascar), A. hildebrandtianum Viane (2021: 56) nom. nov. ( Kenya and Tanzania), A. musiraense Viane (2021: 58) ( Uganda, Tanzania) and A. niamniamense Viane (2021: 57) ( South Sudan, Tanzania and Zambia). The material that Pichi Sermolli (1985: 127) cited from Rwanda was included in A. musiraense .