单头匹菊 dan tou pi ju

Chrysanthemum richterioides C. Winkler, Trudy Imp. S.-Peterburgsk. Bot. Sada 10: 86. 1887; C. merzbacheri B. Fedtschenko ex Merzbacher; Pyrethrum karelinii Krascheninnikov; P. richterioides (C. Winkler) Krasnov.

Herbs, perennial, 6-35 cm tall, rhizomatous; stems solitary or clustered, erect or ascending, villous especially in upper part and below capitula, hairs long, curved, and simple. Basal and lower stem leaves: petiole to 4 cm; leaf blade narrowly elliptic, 2.5-6 × 1.5-2 cm, 2-pinnatisect, both surfaces green or pale green, sparsely villous; primary lateral segments 4-10-paired; ultimate segments narrowly elliptic. Middle and upper stem leaves similar, gradually smaller. Capitula solitary, terminal, long or shortly pedunculate. Involucre coryliform, 15-20 mm in diam.; phyllaries in 4 rows, scarious margin broad, dark brown, outer phyllaries lanceolate, 5-6 mm, abaxially sparsely villous, middle and inner ones narrowly elliptic or oblanceolate, 5-6.5 mm, abaxially glabrous. Ray florets red or purple-red; lamina broadly linear, 1.4-2 cm, apex minutely 3-denticulate. Corona 0.3-0.5 mm, divided for 1/2 length. Fl. Aug-Sep.

Mountain slopes, meadows, alluvial places; 2000-3100 m. Xinjiang (Junggar Pendi, Tian Shan) [Kazakhstan].