Brachycorythis lastii Rolfe in D.Oliver & auct. suc. (eds.), Fl. Trop. Afr. 7: 203 (1898).
Schwartzkopffia lastii (Rolfe) Schltr., Orchideen: 63 (1914).
Schwartzkopffia angolensis Schltr., Beih. Bot. Centralbl. 37(2): 123 (1921).
Brachycorythis schlechteri Geerinck, Bull. Jard. Bot. Natl. Belg. 52: 341 (1982).
Roots up to 25 mm long, 6 mm in diameter, thick, fleshy, clustered, spreading. Stem 3-12 cm tall, erect, glabrous. Cauline bracts few, up to 5 cm long, imbricate, acute, the apices of the upper ones recurved, whitish. Inflorescence 1-3-flowered, lax. Flowers relatively large, with a strong lemon scent, tepals white or pink, lip white or magenta with a yellow spot inside. Floral bracts up to 3 cm long, similar to the cauline bracts. Pedicel and ovary 3-4 cm long, slender, erect, twisted in the lower part. Dorsal sepal 11-17 mm long, 3-6 mm wide, elliptic- oblong to lanceolate, acute to subobtuse. Petals 10-16 mm long, 3-7 mm wide, obliquely oblong, ovate-oblong or ovate, obtuse. Lateral sepals 13-23 mm long, 3.5-8.5 mm wide, obliquely oblong-lanceolate to oblong-ovate, acute. Lip 16-22 mm long, 16 mm wide, cuneate in general outline, horizontal, shallow saccate at the base, three-lobed in the apical third; the middle lobe smaller than side lobes, oblong, obtuse, with a very prominent rib; sidelobes oblong to ligulate, obtuse to rounded. Gynostemium 5-6 mm long.
Brachystegia woodlands and wooded grasslands.
Flowering in October-November.
Considerable variation is seen in flower-size, shape of the lip mid-lobe and its length relative to the side lobes, and the shape of the sides of the hypochile.
As given for the genus.
The Democratic Republic of Congo (Zaire), Burundi, Tanzania, Angola, Zambia, Malawi, Zimbabwe, Mozambique. Alt. 650-1800 m.
Orchidaceae of West-central Africa, vol. 1, Gdansk University Press Gdansk 2010; Flora of Tropical East Africa Summerhayes Orchidaceae Part 1 1968
Click on each image to see a larger version.