Crawfurdia angustata C. B. Cl.

Stems twining, terete, glabrous, internodes 6-17 cm. Petiole 0.5-1 cm, slender; leaf blade elliptic to ovate, 4-7 × 2-4 cm, leathery, base rounded, margin entire, apex acuminate and caudate, veins 3-5. Inflorescences 1-flowered or cymes. Pedicel 1-15 cm; bractlets 1-3 pairs, lanceolate. Calyx sometimes pale purple, tubular; tube 2-2.5 cm, entire or rarely split on 1 side, apex with intracalycular membranes; lobes spreading to recurved, ovate-triangular to triangular, 3-4 × 2-3 mm. Corolla pale purple, funnelform, 6-8.5 cm; lobes ovate-triangular, 1-1.7 cm × 6-12 mm, apex acuminate; plicae broadly triangular, 2-4 × ca. 5 mm, oblique, margin irregularly crenulate. Stamens inserted at middle of corolla tube; filaments linear-subulate, 1.5-1.8 cm; anthers ellipsoid, 5-7 mm. Nectaries ovate. Style linear, 2.5-3 cm; stigma lobes linear. Capsules ellipsoid, ca. 3 cm; gynophore less than 5 mm. Seeds light brown, triquetrous, 2-2.5 mm, broadly winged along edges. Fl. and fr. Oct-Dec.

SE Xizang, NW Yunnan [India, Myanmar].

Meadow slopes, scrub, scattered forests in valleys; 1500-2800 m.

Crawfurdia trailliana Forrest; Gentiana helenii C. Marquand.

Flowering and fruiting from October to December.

Crawfurdia angustata is close relative of Crawfurdia sessiliflora, but differs from the latter in its corolla 6-8.5 cm (vs. 5 cm), lobes 1-1.7 cm (ca. 0.3 cm), plicae broadly triangular (vs. semiorbicular to truncate), fruiting gynophore less than 0.5 cm (vs. 3-4 cm).

Crawfurdia angustata is occurring in SE Xizang, NW Yunnan of China, India, Myanmar.

Phylogeny of Crawfurdia, Metagentiana and Tripterospermum were inferred from the internal transcribed spacers (ITS) of nuclear ribosomal DNA and the plastid DNA trnL (UAA) intron (Chen et al., 2005). Results support the separation of Metagentiana from Gentiana and its closer relationships to Crawfurdia and Tripterospermum based on studies of gross morphology, floral anatomy, chromosomes, palynology, and embryology.

Stems twining, terete, glabrous, internodes 6-17 cm. Petiole 0.5-1 cm, slender; leaf blade elliptic to ovate, 4-7 cm long, 2-4 cm wide, leathery, base rounded, margin entire, apex acuminate and caudate, veins 3-5. Inflorescences 1-flowered or cymes. Pedicel 1-15 cm; bractlets 1-3 pairs, lanceolate. Calyx sometimes pale purple, tubular; tube 2-2.5 cm, entire or rarely split on 1 side, apex with intracalycular membranes; lobes spreading to recurved, ovate-triangular to triangular, 3-4 mm long, 2-3 mm wide. Corolla pale purple, funnelform, 6-8.5 cm; lobes ovate-triangular, 1-1.7 cm long, 6-12 mm wide, apex acuminate; plicae broadly triangular, 2-4 mm long, ca. 5 mm wide, oblique, margin irregularly crenulate. Stamens inserted at middle of corolla tube; filaments linear-subulate, 1.5-1.8 cm; anthers ellipsoid, 5-7 mm. Nectaries ovate. Style linear, 2.5-3 cm; stigma lobes linear. Capsules ellipsoid, ca. 3 cm; gynophore less than 5 mm. Seeds light brown, triquetrous, 2-2.5 mm, broadly winged along edges.

Growing in meadow slopes, scrub, scattered forests in valleys; 1500-2800 m.

Crawfurdia angustata là một loài thực vật có hoa trong họ Long đởm. Loài này được C.B.Clarke mô tả khoa học đầu tiên năm 1883.

大花蔓龙胆（学名：Crawfurdia angustata）为龙胆科蔓龙胆属下的一个种。