圆齿褶龙胆 yuan chi zhe long dan

Gentiana prostrata Haenke var. crenulatotruncata C. Marquand, J. Linn. Soc., Bot. 48: 205. 1929; G. prostrata var. bilobata C. Marquand.

Annuals 2-3.5 cm tall. Stems ascending to erect, branched from base, papillate. Leaves widely spaced; petiole tube 1-1.5 mm, margin ciliolate; leaf blade obovate, 3.5-5 × 2.5-4.5 mm, ± equal to internodes, margin cartilaginous and smooth or ciliolate, apex rounded, midvein abaxially prominent. Flowers sessile or subsessile. Calyx tubular, 6.5-11 mm; lobes triangular, 1.5-2 mm, margin entire and narrowly membranous, apex acute, midvein strongly keeled and decurrent into conspicuous wings of calyx tube. Corolla deep blue to purple, salverform, 1.3-2.2 cm, tube narrowly tubular but limb abruptly expanded and 5-7 mm in diam.; lobes ovate-elliptic to ovate, 2.5-3 mm, margin smooth, apex obtuse; plicae oblong, 2-2.5 mm, margin erose, apex truncate. Stamens inserted at middle of corolla tube, equal; filaments 1-2.5 mm; anthers narrowly ellipsoid, 1.5-1.7 mm. Style 1.5-2 mm; stigma lobes oblong. Capsules narrowly ellipsoid, 8-10 mm; gynophore to 7 mm. Seeds light brown, ellipsoid, 0.6-0.8 mm. Fl. and fr. Aug-Sep.

* Alpine meadows; 4600-5300 m. Qinghai, SE Xizang.