Tridactyle oblongifolia Summerh.

An epiphyte with few-branched stems, up to 8 cm. long, 4–5 mm. in diameter.. Roots verrucose.. Leaves coriaceous, narrowly oblong or ligulate, unequally obtusely bilobed at apex, 5.8–10.5 cm. long, 0.8–1.6 cm. wide, twisted at base to lie in one plane, articulated to reticulately veined sheaths, 16–20 mm. long.. Inflorescences very short, 2–3-flowered; peduncle up to 4 mm. long; bracts triangular.. Flowers greenish white turning yellow with age, lepidote on outside of sepals; pedicel and ovary 3.5 mm. long, lepidote.. Dorsal sepal oblong-ovate, acute, 4.8–5.2 mm. long, 1.8–2 mm. wide; lateral sepals similar but oblique, 4–4.4 mm. long, 2–2.5 mm. wide.. Petals lanceolate, acuminate, 4.4–5 mm. long, 1–1.2 mm. wide.. Lip entire, lanceolate, acute, 3.7–4.5 mm. long, 1–1.3 mm. wide, with a tooth on each side at the mouth of the spur.. Spur filiform, slightly geniculate in basal half, slightly dilated towards apex, 13–14.5 mm. long.. Column 1.6–1.8 mm. long.