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FOC | Family List | FOC Vol. 20-21 | Asteraceae | Tanacetum

5. Tanacetum santolina C. Winkler, Trudy Imp. S.-Peterburgsk. Bot. Sada. 11: 375. 1891.

散头菊蒿 san tou ju hao

Chrysanthemum santolina (C. Winkler) B. Fedtschenko; Pyrethrum kasakhstanicum Krascheninnikov.

Herbs, perennial, 20-30 cm tall; stems solitary or fascicled, erect, upper parts corymbosely branched. Basal leaves: petiole 6-8 cm; leaf blade linear or broadly linear, 6-8 × 2-3 cm, 2-pinnatisect, both surfaces gray-green, pilose with T-shaped and simple hairs; primary lateral segments 10-12-paired; ultimate segments elliptic to elliptic-ovate. Stem leaves few, similar to basal leaves, sessile. Synflorescence an irregular flat-topped panicle. Capitula 5-12; peduncle 6-8 cm, not thickened. Involucre campanulate, 4-7 mm in diam.; phyllaries in 4 rows, scarious margin narrow, outer phyllaries lanceolate, ca. 1.5 mm, inner ones narrowly linear-elliptic, 3-5 mm. Ray florets yellow. Achenes ca. 2 mm. Corona 0.2-0.4 mm, lobed or serrate. Fl. and fr. Jun-Aug.

Rocky slopes, moist places on mountain slopes; 1100-2100 m. Xinjiang [Kazakhstan, Russia].


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