African Plant Database

Platycoryne crocea (Schweinf. ex Rchb. f.) Rolfe
Protologue : Fl. Trop. Afr. [Oliver et al.] 7(2): 257 (1898)
Information on the genus : Platycoryne
Basionym : Habenaria crocea Schweinf. ex Rchb. f.
Status for TA : accepted (present)
Synonym(s) Homotypic
 Platycoryne crocea (Schweinf. ex Rchb. f.) Rolfe subsp. crocea
 Habenaria crocea Schweinf. ex Rchb. f. (1878)
Taxon infra-specific
Platycoryne crocea (Schweinf. ex Rchb. f.) Rolfe subsp. crocea
Platycoryne crocea subsp. elegantula (Kraenzl.) Summerh.
Platycoryne crocea subsp. montis-elgon (Schltr.) Summerh. (1964)
Platycoryne crocea subsp. ochrantha (Schltr.) Summerh. (1964)
Ecology and distribution
Trop. Afr.
Biology : Terrestrial herb 10-45 cm tall, glabrous except tubers; tubers 1-2, ellipsoid, 0,8-1,8x0,5-1 cm; leaves 5-16, the lowermost 3-9 forming a basal tuft, spreading; the largest leaf (linear) 1,5-6x0,2-0,8 cm; inflorescence dense, to c. 3 cm long, 1-9-flowered; bracts leafy, ovate, 6-20 mm long; pedicel and ovary 10-28 mm long; flowers yellow orange; dorsal sepal broadly ovate, 6-12x4-10 mm, acute; laterals deflexed, 5-11x2-4 mm, lanceolate; petals erect, entire, 5-11x1,5-3 mm, adnate to dorsal sepal; lip 5-12 mm long, with tooth-like (side) lobes at base; midlobe ligulate, 2 mm wide; spur 9-15 mm long, ± pendent.
Ecology : Brachystegia, miombo and other woodlands, on stony soil; pebbly grassland; grassy slopes; in shallow soil between, and overlying moist rocks or lava pavements; in shallow clay loam over laterite; rocky forest clearing; meadows with scattered trees and bushes; between gneiss boulders; 0-2350 m alt.
  The species has been divided into 3 subspp., based on number of basal leaves, their length, and on the aspect of the side lobes of the lip; subsp. crocea occurring at lower altitude, viz. 0-360 m. Subsp. montis-elgon occurs in N part of range.

Bibliography for Tropical Africa :
  • Darbyshire, I. Kordofami, M. & al. (2015). The plants of Sudan and South Sudan, An annoted checklist. Kew Publishing
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Record n°175922 modified 2007-04-05
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