Ancistrorhynchus capitatus (Lindl.) Summerh., Bot. Mus. Leafl. 11: 205 (1944).
Homotypic Synonyms:
Angraecum capitatum Lindl., J. Proc. Linn. Soc., Bot. 6: 137 (1862).
Listrostachys capitata (Lindl.) Rchb.f., Flora 48: 190 (1865).
Angorchis capitata (Lindl.) Kuntze, Revis. Gen. Pl. 2: 651 (1891).
Cephalangraecum capitatum (Lindl.) Schltr., Beih. Bot. Centralbl. 36(2): 136 (1918).
Heterotypic Synonyms:
Listrostachys gentilii De Wild., Not. Pl. Util. Congo 1: 147 (1903).
Cephalangraecum gentilii (De Wild.) Schltr., Beih. Bot. Centralbl. 36(2): 136 (1918).
Ancistrorhynchus constrictus Szlach. & Olszewski, Fl. Cameroun 36: 776 (2001).
Stems short, to 10 cm long. Leaves several, 15-30 x 1.5-2 cm, linear, stift and leathery, unequally bilobed at the apex, each lobe with two to three sharp teeth. Inflorescences 1.5 x 2.5 cm, densely many-flowered; bracts brown and papery, to 1 cm long. Flowers white, the lip with a green blotch. Sepals 5-6 x 2-3 mm, oblong, obtuse; petals slightly smaller. Lip 4.5-6 x 4-5 mm, ovate, concave; spur 7-8.5 mm long, straight or slightly incurved, swollen at the tip. Column 2-3 mm long.
Evergreen forest, in heavy shade, 500-1300 ft.
Hot to cool growing epiphyte. It usually flowers in early spring (March and April).
W. Trop. Africa to Uganda
Flora of Tropical East Africa Orchidaceae Part 3 Cribb 1989; African Orchids in the Wild and Cultivation La Croix 1997; Manual of Orchids Stewart 1995; Angraecoid Orchids Stewart, Hermans, Campbell 2006; WCSP (2017). 'World Checklist of Selected Plant Families. 10.03-2017;
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In culture
ancistrorhynchus capitatus
Photograph©R.Jenny. Swiss Orchid Foundation at the Herbarium Jany Renz Image used with kind permission.