短距槽舌兰 duan ju cao she lan

Aerides flavescens Schlechter, Repert. Spec. Nov. Regni Veg. 19: 382. 1924; Papilionanthe flavescens (Schlechter) Garay; Saccolabium yunpeense Tang & F. T. Wang.

Stems 1-2 cm, with several leaves. Leaves nearly basal, distichous; blade subterete, 4-8.5 cm × 3-4 mm, fleshy or thickly leathery, adaxially broadly channeled or ± conduplicate, apex acute. Inflorescence suberect or arching, 3-5 cm, 1-3-flowered; floral bracts slightly reflexed, broadly ovate, 5-8 mm. Flowers opening widely, white, tinged with yellow, lateral lobes of lip with brownish purple stripes, callus yellow, column striped purplish red on either side, anther cap white; pedicel and ovary ca. 1.7 cm. Dorsal sepal elliptic, 9-12 × 4.5-6 mm, base slightly contracted, apex obtuse; lateral sepals obliquely oblong, 13-14 × 5-6 mm, dorsally ± carinate, apex obtuse. Petals elliptic, 9-12 × 4.2-5.5 mm, obtuse; lip spurred, 3-lobed; lateral lobes erect, subovate or ovate-triangular, obtuse; mid-lobe broadly ovate-rhombic, 6-8 × ca. 7 mm, margin slightly undulate, apex obtuse-rounded or sometimes emarginate, with a broadly ovate-triangular basal callus; callus strongly thickened, centrally channeled; spur bent forward, horn-shaped, ca. 7 mm, narrowed toward tip. Column ca. 5 mm, winged, foot ca. 2 mm; rostellum large. Capsule ellipsoid, 2-3 cm × 6-7 mm. Fl. Mar-May, fr. Aug-Sep. 2n = 38*.

● Epiphytic on tree trunks in broad-leaved evergreen forests; 1200-2700 m. N Fujian, SW Hubei, SW Sichuan, N Yunnan.