1. Phagnalon niveum Edgeworth, Trans. Linn. Soc. London. 20: 68. 1846.
绵毛菊 mian mao ju
Phagnalon denticulatum Decaisne ex C. B. Clarke.
Subshrubs, with erect or decumbent stem, (5-)10-30(-40) cm tall, few to profusely branched, branches and stem densely covered with snow-white cottony wool. Branches densely foliate. Leaves variable in shape and size, lanceolate, oblanceolate, linear-oblong, or spatulate, 8-35(-40) × (2-)4-8 mm, densely white cottony abaxially, less so or ± glabrous adaxially, sometimes much narrowed into a sessile base, margin entire, undulate, dentate, or shallowly lobed, apex obtuse or subobtuse. Peduncles erect, 20-70(-80) mm, covered with white cottony wool, bearing a single capitulum. Capitula 8-12(-14) mm in diam., multiflorous. Phyllaries many seriate, densely floccose-lanate; outer phyllaries subulate to narrowly lanceolate, 2-2.5 × ca. 0.5 mm; middle phyllaries subulate to narrowly lanceolate, 3-3.5 × ca. 0.5 mm, gradually narrowed into an acicular point with entire margin, apex ± opaque; inner phyllaries subulate, 6-7 × ca. 0.5 mm, long acuminate. Bisexual florets tubular, 5-6 mm, tube ± glabrous, lobes small, ± rounded, ± hairy at tips. Anthers included to subexserted, not at all caudate at base. Style included to subincluded, bifid, stigmas rounded, papillose. Achenes compressed, ca. 1 mm, sparsely hairy. Pappus setae 5, 4-5 mm, barbellate almost to base. Fl. May-Aug. 2n = 18.
Valleys; 1800-2700 m. W Xizang [Afghanistan, India, Kashmir, Nepal, Pakistan].