Passiflora siamica Crab

Herbaceous vines to lianas, 6-8 m long. Stem ± angular, striate; younger stems densely pubescent. Petiole 1-4 cm, often with 2 ovoid glands at middle; leaf blade ovate-elliptic to lanceolate, 6-18(-25) × 2.5-7 cm, leathery, usually pubescent, abaxially with (0-)2-8 laminar nectaries, base cuneate to subcordate, apex acute or acuminate. Inflorescences (sub)sessile, axillary, (2-)4-15-flowered, sometimes rust-brown pubescent. Pedicel 3-15 mm, pubescent. Flowers white, 2.5-3 cm in diam.; hypanthium 7-10 mm in diam. Sepals 9-12 × 6-7 mm, margin membranous, pubescent. Petals 9-10 × 3-4 mm. Corona in 2 filamentous series; outer series 7-10 mm, inner series 1.5-4 mm; operculum incurved, plicate, 2-2.5 mm high, membranous; disk ca. 0.5 mm high; androgynophore 3-5 mm tall. Stamens 5-8; filaments 1-1.1 cm, basally connate for 1.5-4.5 mm. Ovary (sub)sessile, ellipsoid, 2-3 × 1.5-2.5 mm, pubescent; styles 3-5, 4-9 mm, fused basally up to 2 mm. Fruit 1 or 2 per inflorescence, blue at maturity, subglobose, 1.5-2 cm in diam., sparsely pubescent. Fl. Mar-Apr, fr. Jun-Jul.

EC Guangxi (Guiping), S Yunnan (Xishuangbanna) [India, Laos, Myanmar, Thailand, Vietnam].

Forests, scrub; 500-1600 m.

Passiflora octandra Gagnepain; P. octandra var. attopensis Gagnepain; P. octandra var. cochinchinensis Gagnepain.

长叶西番莲（学名：Passiflora siamica）为西番莲科西番莲属下的一个种。