AFRICAN

ORCHIDS

Tridactyle nigrescens Summerh., Kew Bull. 3: 288 (1948).
Description:
Plants usually pendent, in masses with smooth roots; stems slender and woody, to 30 cm long, drying black. Leaves fleshy, drying black, linear, unequally and acutely bilobed at the apex, 3-7 cm long, 1-3 mm wide. Inflorescences very short, 5-6 mm long, 2- or 3-flowered. Flowers pale green or greenish yellow becoming dirty orange with age; dorsal sepal elliptic, obtuse, 3-4 mm long, 1.5-2 mm wide; lateral sepals oblong-ovate, obtuse, 3-4 mm long, 2 mm wide; petals lanceolate, acute, 3-4 mm long, 1-1.3 mm wide; lip with auricles at the base by the spur mouth, strongly 3-lobed at the apex, side lobes longer than the mid-lobe and lacerate at the apex, 2.6-4 mm long, 2 mm wide; spur slender, slightly inflated in the middle, 6-7.5 mm long.
Habitat:
Epiphyte; only recorded in dry highland forest, in riverine forest and on rocks above a lake; 1150-2200 m.
Cultivation:
As given for the genus.
Distribution:
E. Zaïre to E. Trop. Africa
References:
World Checklist of Monocotyledons. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; http://www.kew.org/wcsp/monocots/ accessed 21.03.2017
Images:
Click on each image to see a larger version.

Habitat/In situ Habitat/In situ
Tridactyle nigrescens  01 Tridactyle nigrescens  02
Photograph© João
Farminhão/ Missouri
Botanical Garden.
Image used with
kind permission.
Photograph© João
Farminhão/ Missouri
Botanical Garden.
Image used with
kind permission.