东北齿缘草 dong bei chi yuan cao

Herbs perennial, 15-30 cm tall. Stems branched from base and becoming cespitose, erect to subdecumbent. Leaf blade linear to subfiliform, 3-6 × ca. 1 cm, with many appressed white hairs. Inflorescences terminal, to 10 cm, racemelike, many flowered; bracts numerous, leaflike. Pedicel erect to slightly ascending, 5-10 mm, short appressed pubescent. Calyx lobes erect or slightly spreading, linear-oblanceolate, 2-2.5 mm, slightly elongated in fruit, short appressed pubescent. Corolla light blue, campanulate-rotate; tube 1.5-2.5 mm; appendages lunate to low trapeziform, short pilose, slightly surpassing throat, with a papillate emergence; lobes suborbicular, 2.5-3.5 × 2.5-3 mm. Anthers oblong, ca. 0.8 mm. Nutlets dorsiventrally compressed, ca. 2 × 1 mm; adaxially keeled, slightly convex, glabrous, finely tuberculate, with a center line rib, marginal rib without prickles or glochids, rarely with a few fine teeth; attachment scar at lower part or base adaxially, oblong.

Hillside meadows, gravelly slopes, arid areas at high elevations. NE Hebei, Heilongjiang, Nei Mongol [Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, Uzbekistan].