Eritrichium canum (Benth.) Kitamura

Perennial. Stems erect-decumbent, 25-40 cm tall, appressed hairy. Leaves both surfaces with sparse to densely appressed hairs; basal leaves petiolate; cauline and upper leaves sessile, petiolate, smaller, obtuse to acute. Inflorescence simple or branched. Bracts linear. Pedicel in fruit ± erect, pubescent. Calyx lobes c. 1 mm long, ovate, upto twice in size in fruit, pubescent. Corolla blue with yellow, lobes suborbicular, apex of throat appendages minutely pubescent or not. Nutlets 1.5-2.5 x c. 1.5 mm, surface flat to slightly concave or convex, pubescent. Margin of appendages usually irregular, 0.2-1 mm. long, united at base or not, apex glochidiate.

Herbs perennial, 15-40 cm tall. Stems erect or decumbent, frequently woody at base, not branched or short branched above, densely appressed white sericeous. Petiole of basal leaves to 5 cm, pubescent; leaf blade narrowly lanceolate, to 8 cm × 6 mm, densely white sericeous, base broadly cuneate, apex acute to acuminate; stem leaves 1 to several below inflorescences, sessile, lanceolate to ovate-lanceolate, reduced upward. Inflorescences 2 or 3, forked, many flowered, corymbose at anthesis, becoming racemelike, to 15 cm after anthesis; bracts linear. Pedicel erect, 1-1.5 cm in fruit, short pubescent. Calyx lobes ovate, 1-2 mm, appressed pubescent, apex obtuse. Corolla light blue, campanulate-rotate; tube shorter; throat yellow or orange; appendages trapeziform or low trapeziform; lobes suborbicular, ca. 3 mm wide. Nutlets subturbinate, ca. 2 × 1.5 mm excluding marginal glochids; marginal glochids ca. 1 mm, confluent at base adaxially, glabrous or short pubescent or tuberculate; abaxially flat or slightly convex, sparsely pubescent; attachment scar at base adaxially. Fl. and fr. Jun-Jul. 2n = 24.

Afghanistan, Himalaya (Kashmir to Nepal), Tibet.

Xinjiang (Yecheng Xian), Xizang [Afghanistan, N India, Kashmir, Nepal, Pakistan].

3800-4600 m

Gravelly slopes, sandy river banks and marshes; 2700-5600 m.

Echinospermum canum Bentham in Royle, Ill. Bot. Himal. Mts. 1: 306. 1836; Eritrichium strictum Decaisne; E. strictum var. thomsonii C. B. Clarke.

Eritrichium canum là loài thực vật có hoa trong họ Mồ hôi. Loài này được (Benth.) Kitam. mô tả khoa học đầu tiên năm 1963.

灰毛齿缘草（学名：Eritrichium canum）是紫草科齿缘草属的植物。分布于印度、巴基斯坦、克什米尔、阿富汗以及中国大陆的西藏、新疆等地，生长于海拔2,700米至5,600米的地区，常生长在砾石山坡或河滩沙地，目前尚未由人工引种栽培。