4. Trichotosia dasyphylla (E. C. Parish & H. G. Reichenbach) Kraenzlin in Engler, Pflanzenr. 50(IV. 50. II. B. 21): 138. 1911.
瓜子毛鞘兰 gua zi mao qiao lan
Eria dasyphylla E. C. Parish & H. G. Reichenbach, Trans. Linn. Soc. London 30: 147. 1874; Pinalia dasyphylla (E. C. Parish & H. G. Reichenbach) Kuntze.
Plants 2-3 cm tall, grayish white hirsute, with ± tufted rhizomes. Stem very short. Leaves 2-5, tufted, petiolate, elliptic or obovate-cuneate, 10-15 × 4-6 mm, fleshy, apex obtuse; petiole 3-4 cm, running down to a trumpet-shaped basal sheath. Inflorescence axillary, with a solitary flower; peduncle 5-10 mm, with 2 trumpet-shaped basal sheaths; floral bracts persistent, ca. 2 mm, acuminate. Flowers pale yellow; pedicel very short. Sepals with dense long white hairs abaxially; dorsal sepal ovate-lanceolate, 3-4 × 1-2 mm, obtuse; lateral sepals obliquely triangular, 5-6 × ca. 4 mm, obtuse; mentum ca. 4 × 2 mm. Petals oblong, 3-4 × ca. 1 mm, abaxially with dense white long hairs, apex obtuse; lip obovate-oblong, 5-6 × ca. 3 mm, slightly contracted at middle, thickened, abaxially with white long hairs, margin ciliate, apex subtruncate, with 2 suboblong calli on both sides, with a slightly thickened area between calli. Column ca. 1.5 mm; foot ca. 4 mm. Capsule obovoid-cylindric, 5-6 × nearly 3 mm, with white long hairs. Fl. Jun-Sep.
Epiphytic on trees; 900-1600 m. S and SW Yunnan [India, Laos, Myanmar, Nepal, Thailand, Vietnam].