不丹垂头菊 bu dan chui tou ju

Plants bluish green. Stem solitary, erect, 10-25 cm tall, 1-2 mm in diam. at base, glabrous or distalmost part sparsely white arachnoid-puberulent. Basal leaves petiolate; petiole 1-2 cm, glabrous, base sheathed; leaf blade abaxially grayish green, adaxially green, linear, linear-lanceolate, or linear-oblong, 1.5-8 cm × 2-3.5 mm, parallel veined, glabrous, base narrowed into a petiole, margin entire, revolute, apex rounded. Middle to distal stem leaves linear, 1.5-2.5 cm, apex obtuse. Capitulum solitary, nodding. Involucre hemispheric, ca. 1 × 1.5 cm, outside glabrous; phyllaries 12, in 2 rows, lanceolate or narrowly lanceolate, 2-3 mm wide, margin narrowly membranous, apex acute, white ciliate. Ray florets yellow; lamina elliptic, 1.2-1.4 cm × 4-6 mm, with brown veins, apex obtuse. Tubular florets numerous, yellow, 5-6 mm; tube ca. 1 mm. Achenes (immature) ca. 2 mm. Pappus white, as long as tubular corolla. Fl. Aug.

Alpine meadows; ca. 4300 m. SE Xizang [Bhutan, ?NE India].