Chrysanthemum delavayanum H. Ohashi & Yonekura.

Herbs, perennial, ca. 35 cm tall, with 1 flowering stem and 1 or 2 sterile stems; rhizomes short, with slender fibrous roots. Flowering stem erect, most parts densely and thickly sericeous-tomentose. Middle stem leaves: petiole 2-4 mm; leaf blade suborbicular or flabelliform, ca. 0.8 × 1.5 cm, both surfaces gray-white, densely and thickly tomentose, 3-pinnatisect or subtripalmate-pinnatisect; primary lateral segments 2-paired; ultimate segments lanceolate or narrowly elliptic. Lower and upper stem leaves smaller. Synflorescence a terminal flat-topped panicle, 2-4 cm in diam. Capitula few or moderate in number. Involucres campanulate, 3-4 mm in diam.; phyllaries in 4 rows, scarious margin pale brown, outer ones linear or lanceolate, ca. 2.5 mm, abaxially densely and thickly tomentose, middle and inner ones oblanceolate or narrowly elliptic, ca. 3 mm, middle ones densely and thickly tomentose abaxially, inner ones glabrous abaxially. Florets yellow; marginal female florets: corolla tubular, ca. 1.5 mm, apex 4- or 5-denticulate; disk florets many, corolla tubular, ca. 2 mm. Fl. May.

● Yunnan (Eryuan).