Cyrtorchis brownii (Rolfe) Schlechter (1918: 129)

Azandi, Laura, Stevart, Tariq, Sonké, Bonaventure, Simo-Droissart, Murielle, Avana, Marie-Louise & Droissart, Vincent, 2016, Synoptic revision of the genus Cyrtorchis Schltr. (Angraecinae, Orchidaceae) in Central Africa, with the description of a new species restricted to submontane vegetation, Phytotaxa 267 (3), pp. 165-186 : 174

4. Cyrtorchis brownii (Rolfe) Schlechter (1918: 129) . Basionym: Listrostachys brownii Rolfe (1906: 378) . Homocolleticon brownii (Rolfe) Szlachetko & Olszewski (2001: 728) . Type:— UGANDA. Entebbe, 1,189 m, June 1905, R.Brown 248 (holotype K!)

Heterotypic synonym: Angraecum latibracteatum De Wildeman (1916: 188) . Cyrtorchis latibracteata (De Wild.) Schlechter (1918: 131) . Lectotype:— DEMOCRATIC REPUBLIC OF THE CONGO. Eala, Indjolo, September 1905, M.Laurent 1773 (lectotype BR!, here designated, isolectotype P!) syn. nov. Paralectotypes:—Kiravunga, Ango Buta, quelque part sur l’Uele entre Bima et Amadi, probablement entre Bambili et Amadi, 1 November 1905, F.Seret 194 (Paralectotype BR!); Yambuya, Banalia sur l’Azuwimi, March 1906, M.Laurent 1758 (Paralectotype BR!).

Additional specimens examined:— IVORY COAST. Forêt de Tai , 22 October 1961, Aké Assi 6031 (K) ; forest near D’Hivé , 14 November 1966, Aké Assi 9225 (K) ; Tiapleu , 16 November 1967, Aké Assi 9768 (K) ; Sine loc., 3 November 1975, de Koning 6098 ( WAG) . CAMEROON. 50 km W of Baléa (along Sangha R., near C. A.R. border, about 82 km E. of Lokomo, km 120 road Yokadouma-Moloundou ), 500 m, 2 December 1982, de Kruif 809 ( YA) . CENTRAL AFRICAN REPUBLIC. 15 km S de Mbaïki , 12 November 1968, Badré 245 ( P) ; Boukoko , 22 October 1947, Tisserant 382 ( P) . GABON. Basse Djouah , 4 December 1964, Hallé 3401 ( P) . DEMOCRATIC REPUBLIC OF THE CONGO. Yambuya, Banalia sur l’Azuwimi , 5 December 1906, Pynaert 699 ( BRLU) . UGANDA. Mabira forest , 1,219 m, 15 November 1938, Loveridge 76 (K) . TANZANIA. Sigi Segoma , Tanga district, 914 m, 25 May 1944, Moreau 737 (K) ; ibid., 14 May 1946, Moreau 737B (K) .

Distribution:— According to Govaerts et al. (2016), Cyrtorchis brownii occurs in fifteen countries ( Sierra Leone, Liberia, Ivory Coast, Nigeria, Equatorial Guinea, São Tomé & Príncipe, Cameroon, Central African Republic, Gabon, Republic of the Congo, Democratic Republic of the Congo, Uganda, Kenya, Tanzania, and Malawi), although we have not examined any material from Sierra Leone, Liberia, Nigeria, Equatorial Guinea, São Tomé & Príncipe, Republic of the Congo, Kenya and Malawi. Cyrtorchis brownii is thus widely distributed in Sub-Saharan Africa.

Habitat and ecology:— Rainforest between 500 and 1,219 m elevation. Flowering peaks in November and December.

Notes:— In the protologue of Angraecum latibracteatum , three syntypes were cited by De Wildeman (1916), Laurent 1773 from Injolo, Laurent 1758 from Yambuya and Seret 194 from Kiravunga, all from Democratic Republic of the Congo. We designated Laurent 1773 as the lectotype of this taxon because the specimen is more complete and representative of the protologue.