小齿龙胆 xiao chi long dan

Gentiana trichotoma Kusnezow var. albescens C. Marquand.

Perennials 25-35 cm tall. Rhizomes to 15 cm. Stems 1 or 2, erect, simple, densely papillate. Basal leaves in 1 or more erect rosettes; petiole 2-2.5 cm, membranous; leaf blade narrowly elliptic, elliptic, or oblong, 2.5-3.5 × 0.8-1.8 cm, base narrowed, apex obtuse, veins 1-3. Stem leaves 3 or 4 pairs; petiole 0.5-1.5 cm, shorter to absent toward apex; leaf blade oblong, oblanceolate, or elliptic, 2-4 × 0.4-1.5 cm, base narrowed, apex obtuse to rounded, veins 1-3. Cymes axillary or terminal, forming a narrow panicle, cymes sometimes on pedunclelike branches; peduncles to 4.5 cm. Pedicel 0.5-2.5 cm, densely papillate. Calyx narrowly obconic, 7-10 mm; tube spathelike, split on 1 side; lobes erect, subulate, 1-1.5 mm. Corolla dark blue, unspotted, narrowly funnelform, 2.2-2.5(-3.2) cm; lobes ovate, 3-4 mm, margin entire, apex obtuse; plicae triangular to obliquely truncate, 1.5-2 mm, margin denticulate, apex obtuse. Stamens inserted at middle of corolla tube; filaments 7-11 mm; anthers ellipsoid, 2-2.5 mm. Style 2-2.5 mm; stigma lobes semiorbicular. Capsules ovoid-ellipsoid, 1-1.2 cm; gynophore 8-10 mm. Seeds light brown, ellipsoid to subglobose, 1-1.2 mm. Fl. and fr. Jul-Nov.

* Alpine meadows, forests; 2600-4200 m. NW Yunnan

The two syntypes of Gentiana microdonta belong to different taxa. The lectotype, Delavay s.n. from Dali, Yunnan, corresponds to the original description, whereas Faber 46 from Emei Shan (Sichuan) belongs to G. omeiensis.