无梗齿缘草 wu geng chi yuan cao

Herbs annual, 15-20 cm tall. Stems ascending, short appressed pubescent. Petiole of lower leaves 3-5 mm; upper leaves ± sessile. Leaf blade oblong to linear-oblanceolate, 0.5-2 cm × 2-3 mm, appressed pubescent, base attenuate, apex rounded. Inflorescences axillary or extra-axillary, 1-flowered. Pedicel ca. 1 mm, appressed pubescent. Flowers and fruits sessile or nearly so. Calyx lobes erect at anthesis, divaricate in fruit, lanceolate, ca. as long as to slightly longer than tube, ca. 0.7 mm, to 1 mm in fruit. Corolla campanulate-tubular, 1-1.2 mm; appendages obscure; lobes suborbicular, ca. 0.5 mm wide. Nutlets turbinate; abaxially triangular-ovate, ca. 1.5 × 1 mm, sparsely pubescent; marginal glochids stiff, ca. 1.2 mm, free at base; attachment scar at middle adaxially, narrowly ovate.

* Grasslands, rocky river banks; ca. 2000 m. Xinjiang (Hotan Xian).