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Pterygodium cooperi Rolfe in W.H.Harvey & auct. suc. (eds.), Fl. Cap. 5(3): 278 (1913).
Heterotypic Synonyms:
Pterygodium macloughlinii L.Bolus, Ann. Bolus Herb. 1: 131 (1915).
Description:
Plant 3/4–1 1/4 ft. high; stem moderately stout; leaves cauline, sessile, 2 or 3, oblong or linear-oblong, acute or subacute, 2–4 1/2 in. long; scapes 3/4–1 1/4 in. high; spikes 2–3 in. long, dense, many-flowered; bracts ovate or ovate-lanceolate, acute or acuminate, 6–8 lin. long; pedicels about 5 lin. long; flowers medium-sized; dorsal sepal elliptic-oblong, subobtuse, concave, 2 1/2–3 lin. long; lateral sepals spreading, obliquely ovate, obtuse, 2 1/2–3 lin. long, nearly as broad as long; petals cohering with the dorsal sepal into a somewhat expanded limb, oblique, obovate-orbicular, 2 1/2–3 lin. long, broader than long, unequally bilobed at the apex, upper lobe rather narrow, obtuse, lower lobe broadly rounded, subundulate; lip broadly unguiculate; limb broadly deltoid-triangular, apiculate or acute, concave, 1 1/4 lin. long, broader than long; appendage obovate-oblong, truncate, 1 1/4 lin. long; column short; arms of the rostellum diverging, obovate-oblong, obtuse, curved, over 1 lin. long.
Habitat:
The plant’s habitat is forest margins and montane grassland at elevations from 1500 m to 2800 m.
Distribution:
S. Africa
References:
Flora Capensis, Vol 5, Part 3, page 3, (1913) Author: (By R. A. ROLFE.); The phylogeny and evolution of the Pterygodium—Corycium complex (Coryciinae, Orchidaceae) H. Kurzweil, Plant Systematics and Evolution, Vol. 175, No. 3/4 (1991), pp. 161-223; Seed morphology in Southern African Orchidoideae (Orchidaceae) H. Kurzweil, Plant Systematics and Evolution, Vol. 185, No. 3/4 (1993), pp. 229-247
Images:
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Photograph© Cameron McMaster. Image used with kind permission.	Photograph© Cameron McMaster. Image used with kind permission.	Photograph© Cameron McMaster. Image used with kind permission.	Photograph© Cameron McMaster. Image used with kind permission.	Photograph© Cameron McMaster. Image used with kind permission.	Photograph© Cameron McMaster. Image used with kind permission.