筒花龙胆 tong hua long dan

Ericala tubiflora Wallich ex G. Don, Gen. Hist. 4: 189. 1837; Gentiana longistyla T. N. Ho; G. tubiflora var. longiflora Turrill; G. tubiflora var. namlaensis C. Marquand.

Perennials 4-5 cm tall. Stolons 2-5 cm, simple to 3branched. Stems erect, simple. Leaves crowded; petiole 3-5 mm; leaf blade oblong to elliptic, 6-9 × 2-3 mm, base narrowed, margin cartilaginous and ± ciliate, apex acute to obtuse and sometimes caudate; vein 1, abaxially indistinct. Flowers solitary. Calyx tubular to narrowly obconic, tube (0.8-)1.2-1.5 cm; lobes ovate to triangular, 4-7 mm, margin usually ± ciliate, apex acute and sometimes caudate, midvein indistinct. Corolla dark blue, unspotted, tubular, (2.5-)3.2-4.2 cm; lobes 4-6 mm, ovate, margin entire, apex obtuse; plicae obliquely truncate, 1-1.5 mm, margin erose. Stamens inserted at middle of corolla tube; filaments (4-)6-10 mm; anthers linear, 1.5-2.5 mm. Style filiform, 1.2-1.4 cm, longer than ovary; stigma lobes oblong. Capsules ellipsoid to ovoid-ellipsoid, 0.9-1.3 cm; gynophore to 4 cm. Seeds brown, ellipsoid, 0.7-1 mm; seed coat with simple pits.

Grassy hillsides, dry hillsides, alpine meadows; 4200-5300 m. S and SE Xizang [Bhutan, NW India, Nepal, Sikkim].