岩菊蒿 yan ju hao

Pyrethrum scopulorum Krascheninnikov, Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk S.S.S.R. 9: 164. 1946; Lepidolopsis scopulorum (Krascheninnikov) Poljakov.

Herbs, perennial, to 35 cm tall, with branched rhizomes; stems solitary or clustered, upper parts shortly corymbosely branched, densely or sparsely pilose with T-shaped and simple hairs. Basal leaves: petioles to 2 cm; leaf blade narrowly elliptic or elliptic, 4-8 × 1-2 cm, inconspicuously 3-pinnatisect, both surfaces green or pale gray-green, pilose; primary lateral segments 8-10-paired; ultimate segments ovate-lanceolate or obliquely triangular. Stem leaves few, sessile. Synflorescence a flat-topped cyme. Capitula 3-6; peduncle 1-8 cm. Involucre campanulate, 7-10 mm in diam.; phyllaries in 4 rows, abaxially villous or pubescent, outer phyllaries lanceolate, ca. 2.5 mm, apex white scarious-ampliate, middle and inner ones elliptic to linear-elliptic, 3-5 mm. Ray florets yellow, apex 3- or 4-denticulate. Achenes 2-2.3 mm. Corona 0.2-0.3 mm, margin serrate. Fl. and fr. Jul-Aug.

Mountain slopes; ca. 700 m. Xinjiang (Altay Shan) [Kazakhstan].