蝶须 die xu

Gnaphalium dioicum Linnaeus, Sp. Pl. 2: 850. 1753; Antennaria hyperborea D. Don; A. insularis Greene.

Herbs, perennial, dioecious, 3-10 cm tall. Stolons 2-5 cm. Basal leaves spatulate or rhombic-spatulate, 3-18 × 3-6 mm, abaxially gray tomentose, adaxially green glabrous and distally pink or white, vein 1, apex mucronate; cauline leaves linear, 7-13 mm, not flagged, apex acute. Capitula 3-7 in corymbiform arrays. Involucre 5-6.5 mm in male florets, 5-7 mm in female florets; phyllaries distally dark pink to light pink or white. Corollas 3-4 mm in male florets, 4-5 mm in female florets. Achenes 0.5-1 mm, papillate. Pappus 3.5-4.5 mm in male florets, 5-6 mm in female florets. Fl. May-Aug. 2n = 28.

Dry slopes on tundra, meadows, conifer forests; 600-2700 m. Gansu, Heilongjiang, Xinjiang [Japan, Kazakhstan, Mongolia, Russia; Europe, North America (Alaska)].