单头火绒草 dan tou huo rong cao

Leontopodium evax Beauverd var. fimbrilligerum (J. R. Drummond) Beauverd; L. fimbrilligerum J. R. Drummond.

Plants stoloniferous, forming mats, 4-10 cm; stolons slender, with scattered recurved scales or small nonsheathing leaves, ± prostrate, terminated by a loose rosette of leaves. Leaves spatulate to oblong-oblanceolate, 7-18 × 2-3.3 mm, yellowish, rarely grayish, tomentose, base dilated, apex obtuse, rarely brown apiculate. Flowering stems 0.5-6 cm. Capitula 1-10, dioecious (in our specimens), central one 5-7 mm wide; bracteal leaves oblanceolate or spatulate, to 14 × 3(-4) mm, grayish yellow to brown villous (or sericeous) adaxially, sometimes with concealed apiculum. Phyllaries oblanceolate, rarely ovate-oblanceolate, 4-6.2 × 1-2 mm, with blackish, scarious, deeply lacerate margin. Corollas 3.3-4.2 mm. Achenes pubescent; male ovary sparsely pubescent.

Alpine gravelly slopes, meadows; 4000-5000 m. Xizang [Bhutan, India, Nepal, Pakistan].