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FOC | Family List | FOC Vol. 16 | Gentianaceae | Gentiana

31. Gentiana cephalantha Franchet in F. B. Forbes & Hemsley, J. Linn. Soc., Bot. 26: 125. 1890.

头花龙胆 tou hua long dan

Perennials (10-)20-50 cm tall. Stems glabrous or copiously glandular toward apex; vegetative stems short; flowering stems simple, ascending, base usually woody, basally horizontal, with a basal rosette. Basal leaves with petiole 0.7-3 cm, membranous; leaf blade 3.5-10 × 0.8-2.2 cm, narrowly elliptic to elliptic-lanceolate, uppermost leaves oblanceolate, base narrowed, margin slightly revolute and scabrous, apex acuminate to obtuse, veins 1-3. Stem leaves 4-10 pairs, distinctly larger toward apex, apically crowded and subtending terminal flower cluster; petiole 5-12 mm; leaf blade 3-7 × 1.2-2.2 cm. Inflorescences terminal clusters, (3-)5-12-flowered, occasionally also subapical axillary clusters on pedunclelike branches. Flowers sessile. Calyx obconic, 1.5-2 cm, tube membranous; lobes very unequal, herbaceous, base narrowed, margin ± scabrous, apex acuminate, midvein distinct; larger 2 lobes, spatulate, 7-9 mm, apex obtuse; smaller 3 lobes linear-lanceolate, 5.5-6.5 mm. Corolla blue, tubular-campanulate to funnelform, 2.5-3.5 cm; lobes ovate to triangular, 4-5 mm, margin entire, apex acute; plicae triangular, 1-1.5 mm, oblique, margin entire, apex acute. Stamens inserted at basal part of corolla tube; filaments 1.3-1.5 cm; anthers ellipsoid, 2.5-3 mm. Style 2-3 mm; stigma lobes linear. Capsules ellipsoid, 1.2-1.5 cm; gynophore to 1.7 cm. Seeds light brown, ellipsoid to subglobose, 0.4-0.6 mm. Fl. and fr. Aug-Nov.

1800-4500 m. Guangxi, Guizhou, Sichuan, Yunnan [Myanmar, Thailand, Vietnam]

1 Stems completely glabrous   31a var. cephalantha
+ Stems copiously glandular toward apex   31b var. vaniotii

Lower Taxa


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