Gentiana crassicaulis

Description

Perennials 25-40 cm tall.Roots to 30 × 2 cm.Stems ascending,stout,simple,glabrous.Basal leaves petiole 5-8 cm,membranous;leaf blade narrowly elliptic to ovate-elliptic,12-20 × 4-6.5 cm,base narrowed,margin scabrous,apex acute,veins 5-7.Stem leaves 3-5 pairs,distinctly larger toward apex,sessile,spreading,and surrounding flower cluster;petiole to 3 cm,membranous,completely connate;leaf blade ovate-elliptic to ovate-triangular,6-16 × 3-4.5(-7) cm,base obtuse to truncate,margin scabrous,apex acute to obtuse,veins 3-5.Inflorescences crowded,many-flowered terminal clusters,rarely also few-flowered axillary whorls.Flowers sessile.Calyx tube spathelike,4-6 mm,membranous,split on 1 side,apex truncate;lobes 1-5,dentiform,0.5-1 mm.Corolla blue-purple,base pale yellow base or sometimes white or dark green,urceolate,2-2.2 cm;lobes ovate-triangular,2.5-3.5 mm,margin entire,apex acute;plicae triangular,1-1.5 mm,oblique,margin denticulate,apex acute.Stamens inserted at middle of corolla tube;filaments 6-8 mm;anthers narrowly ellipsoid,1.5-2.5 mm.Style 2-2.5 mm;stigma lobes oblong.Capsules sessile,ovoid-ellipsoid,1.8-2 cm.Seeds light brown,ellipsoid,1.2-1.5 mm.Fl.and fr.Jun-Nov.