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Pterygodium magnum Rchb.f., Flora 50: 117 (1867).
Homotypic Synonyms:
Corycium magnum (Rchb.f.) Rolfe in W.H.Harvey & auct. suc. (eds.), Fl. Cap. 5: 111 (1913).
Description:
An erect stout glabrous herb, 60-115 cm. high; leaves erect or erect-spreading oblong-lanceolate, acuminate or acute, sheathing the stem at base, gradually passing off into the bracts, attaining 28 cm. in length; spike cylindrical densely many-flowered, flowers erect-spreading; bracts herbaceous spreading-deflexed linear lanceolate acuminate or acute, usually exceeding the flowers; lateral sepals spreading-porrect, obliquely ovate-lanceolate acuminate 0,9 cm. long; odd sepal erect concave oblong-lanceolate acuminate, as long as the lateral ones; petals erect, almost semiorbicular in outline, somewhat truncate at base, the outer margin lacerate-fimbriate, as long as the odd sepal; limb of the labellum deflexed cuneate-flabellate, the lower margin lacerate fimbriate, 0,5 cm. long, the appendix erect cucullate, bifid at the apex, the segments inflexed, 0,5 cm. long; anther subhorizontal; ovary 1-1,4 cm. long.
Habitat:
This terrestrial orchid is found in marshy grassland and river flood plains at 2950-5900 ft. (900-1800 m) in East Cape, Transkei, northeastern Orange Free State, Natal, and eastern Transvaal.
Phenology:
It flowers January through May.
Culture:
Read more of cultivation of Pterygodium magnum Rchb.f.
Distribution:
S. Africa
References:
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; Orchids of Southern Africa by H. P. Linder; H. Kurzweil Published by A.A. Balkema, Rotterdam (1999)
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.