台湾筒距兰 tai wan tong ju lan

Plants 12-25 cm tall. Pseudobulbs ovoid or broadly cylindric, 1-2.5 × 0.4-0.6 cm, 2-4-noded, with a few elongate roots at base. Leaf abaxially purplish, adaxially green and sometimes tinged purple, ovate to ovate-elliptic, 3-7 × 1.5-3 cm, margin denticulate and slightly crisped, apex acuminate; petiole-like base purplish, 1.5-6 cm, channeled. Inflorescence purplish brown, 10-23 cm; peduncle 8-15 cm, with 2 or 3 short tubular sheaths; rachis 2.5-8 cm, laxly 10- or more flowered; floral bracts deltoid, minute. Flowers spreading horizontally to slightly pendulous, opening widely; sepals and petals green suffused with brownish purple, lip yellowish green, spur whitish yellow; pedicel and ovary 5-8 mm. Sepals narrowly oblong, 4-6 × ca. 1.5 mm, apex obtuse or acute. Petals lanceolate to linear-lanceolate, 4-5 × ca. 1.2 mm, apex obtuse or acute; lip narrowly oblong-ovate, ca. 5 × 1 mm, 3-lobed near base; disk with a pair of small, fleshy oblong calli at mouth of spur; lateral lobes nearly orbicular, ca. 0.8 mm, margins irregularly undulate; mid-lobe narrowly oblong-ligulate, ca. 3 mm, apex acute; spur spreading horizontally or ascending, slender, 10-12 × ca. 0.5 mm, apex obtuse. Column ca. 3.5 mm; pollinia borne on a distinct stipe. Fl. May-Jun.

● Mossy places in forests; 1500-2600 m. C and N Taiwan.