AFRICAN

ORCHIDS

Tridactyle filifolia (Schltr.) Schltr., Beih. Bot. Centralbl. 36(2): 144 (1918).
Homotypic Synonyms:
Angraecum filifolium Schltr., Westafr. Kautschuk-Exped.: 284 (1900).
Heterotypic Synonyms:
Listrostachys linearifolia De Wild., Not. Pl. Util. Congo 1: 149 (1903).
Tridactyle linearifolia (De Wild.) Schltr., Beih. Bot. Centralbl. 36(2): 146 (1918).
Tridactyle tridentata var. subulifolia Summerh., Kew Bull. 3: 287 (1948).
Description:
Pendent epiphytic herb, forming large clumps. Stems slender, 10–80 cm long, 1–2 mm in diameter, branched. Roots arising near the stem base, smooth, 1–2 mm in diameter. Leaves 7–14 cm × 0.3–1.5 mm, terete, acute, usually grooved on upper surface. Inflorescences arising along the stem, very short, 2–8 mm long, 2–3-flowered.Pedicel and ovary 2–3 mm long, lepidote; bracts 0.5 mm long. Flowers pale ochre in colour or translucent creamy-white, turning orange with age. Sepals 2.3–3.5 × 1–2 mm, lanceolate or ovate, acute, the lateral sepals oblique. Petals 2–3 × 0.6–1 mm, linear-lanceolate, acute. Lip auriculate at the base, 3-lobed at about halfway, 1.7–3.4 mm long and 0.8–2 mm wide; mid-lobe c. 1 mm long, triangular, side lobes tooth-like, spreading, about half the length of the mid-lobe; spur 6–8.3 mm long, filiform, incurved. Column c. 1 mm long.
Habitat:
Evergreen forest . Altitude range 650–1600 m.
Cultivation:
As given for the genus, warm to cool, pendent growing epiphyte.
Distribution:
Trop. Africa
References:
Malawi Orchids Vol 1 La Croix 1983; Flora of Tropical East Africa Orchidaceae Vol 3 Cribb 1989; Orchids of Kenya Stewart & Campbell 1996; Flora Zambesiaca Vol 11 Part 2 Pope 1998; Field Guide to Ethiopian Orchids Demissew, Cribb & Rassmusen 2004; Angraecoid Orchids Stewart, Hermans and Campbell 2006; 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:
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