小尖囊蝴蝶兰 xiao jian nang hu die lan

Aerides taenialis Lindley, Gen. Sp. Orchid. Pl. 239. 1833 ["taeniale"]; Biermannia taenialis (Lindley) Tang & F. T. Wang; Doritis taenialis (Lindley) J. D. Hooker; Kingidium taeniale (Lindley) P. F. Hunt; Kingiella taenialis (Lindley) Rolfe; Polychilos taenialis (Lindley) Shim.

Roots flattened, long, ± verrucose. Stems inconspicuous. Leaves basal, few, often deciduous at anthesis or during dry season, usually only 1 leaf persistent; leaf blade suboblong, 1-3.5 × 4-13 mm. Inflorescence borne from base of stem, 6.5-19 cm, unbranched, 1- or 2-flowered; rachis 5-10 mm; floral bracts ovate-triangular, ca. 3 mm, acute. Flowers opening widely, sepals and petals pale pink, lip and anther cap rose-purple; pedicel and ovary ca. 1.5 cm. Dorsal sepal oblong, 8-9 × ca. 4 mm, obtuse; lateral sepals subelliptic, ca. 9.5 × 4.5 mm, base adnate to column foot, apex obtuse. Petals obovate-spatulate, ca. 9 × 4 mm, rounded; lip 3-lobed; lateral lobes erect, subfusiform, ca. 5 × 1.5 mm, adaxially with a slightly thickened longitudinal ridge close to proximal margin, apex subtruncate; mid-lobe flat, spatulate, ca. 7 × 3 mm, base with a broad furcate-lobed appendage, apex rounded; spur ca. 3 mm; callus biseriate, posterior callus fleshy, bidentate, on back wall of spur, anterior callus ligulate, deeply bifid, attached to front wall at base of mid-lobe. Column ca. 5 mm, stout, broadly dilated at stigma, foot ca. 3 mm; anther cap subglobose, apex slightly mucronulate. Fl. Jun. 2n = 36, 38, 40, 57.

Epiphytic on tree trunks in forests; 1100-2200 m. S Xizang, NW to SE Yunnan [Bhutan, NE India, Myanmar, Nepal, Thailand].