Habenaria nigrescens Summerh. 1966 SECTION Commelynifoliae Kraenzl. 1892
Drawing by © Margonska
Collection sheet by © M Brunt
Common Name The Dark Habenaria
Flower Size
Found in Nigeria and Cameroons in grasslands at elevations around 100 to 2350 meters as a small sized, hot cold growing terrestrial with ovoid tubers giving rise to an erect, slender, glabrous stem carrying 9, spirally arranged along the stem, narrowly lanceolate, acute, decreasing gradually towards the apex leaves that blooms in the summer on an erect, terminal, 2 to 5.4" [5 to 13.5 cm] long, lax to dense, few to multiflowered inflorescence with oblong-ovate, acute to acuminate, herbaceous, just shorter to much loner than the ovary floral bracts and carrying small, wide opening flowers.
Differs from Habenaria peristyloides A.Rich. 1840 in having ciliate petals and a distinctly longer to twice longer spur that can be bifid at the apex.
Synonyms
References W3 Tropicos, Kew Monocot list , IPNI ;
* Kew Bull. 20: 165 Summerhayes 1966
* Kew Bull. 20: 166 Summerhayes 1966 Drawing fide
Fl. Cameroun 34: 226 Szlach 1998 as Roeperocharis nigrescens
Orchidaceae of West Central Africa Vol 1: 294 Szlachetko etal 2010 as Roeperocharis nigrescens drawing ok;
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