尖叶石仙桃 jian ye shi xian tao

Pholidota rupestris Handel-Mazzetti.

Rhizomes creeping, often branched, 2-3 mm in diam., densely covered with scaly sheaths, nodes sparsely rooting; roots 0.5-1 mm in diam. Pseudobulbs usually 5-10 mm apart on rhizome, bright yellowish when dried, ovoid to subcylindric, 1-3 cm × 5-12 mm, base embraced by leathery sheaths, apex 2-leaved. Leaf blade linear-oblanceolate, nearly broadly linear, or lanceolate, 2-8 × 0.6-1 cm, thickly leathery, midvein concave and 2 lateral veins obviously convex adaxially, all 3 veins raised abaxially, margin slightly recurved, apex subacute to long acuminate; petiole 3-10 cm. Inflorescence arising with young leaves from rhizome near base of last pseudobulb, 3-8 cm; rachis straight, 3-9-flowered; floral bracts gradually falling off during flowering, ovate, 6-7 mm. Flowers white, tinged with green or reddish, 5-7 mm in diam.; pedicel and ovary 2-5 mm. Sepals ovate or broadly ovate, 3-5 × 2-2.5 mm, 1-veined; lateral sepals cymbiform, slightly oblique, narrower than dorsal sepal. Petals obovate-orbicular or elliptic, 2.5-3 × ca. 1.8 mm, 3-veined; lip nearly broadly oblong or obovate, ca. 4 × 3 mm, base slightly concave, margin crisped, apex obtusely mucronate or broadly emarginate; hypochile with 3 short keels at back; epichile 1-2 mm. Column 1.2-1.5 mm, thick, apex winged, slightly irregularly toothed; rostellum suberect, suborbicular. Capsule obovoid-ellipsoid, ca. 1 cm × 5 mm, slightly 3-ribbed; fruiting pedicel 1-2 mm. Fl. Jun, Oct-Nov, fr. Nov.

Epiphytic on trees in forests, lithophytic on shaded rocks; 1100-2600 m. C and SW Guizhou, SE Xizang, NW and SE Yunnan [Bhutan, Myanmar, N Vietnam].