Description from Flora of China
Chrysanthemum leucanthemum Linnaeus, Sp. Pl. 2: 888. 1753; Chamaemelum leucanthemum (Linnaeus) E. H. L. Krause; Chrysanthemum vulgare (Lamarck) Gaterau (1789), not (Linnaeus) Bernhardi (1800); Leucanthemum ircutianum Candolle; Matricaria leucanthemum (Linnaeus) Desrousseaux; Pyrethrum leucanthemum (Linnaeus) Franchet (1885), not Wenderoth (1831); Tanacetum leucanthemum (Linnaeus) Schultz Bipontinus.
Herbs, perennial, 15-80 cm tall; stems erect, usually unbranched, tomentose, floccose, or glabrous. Basal leaves: petiole longer than blade; leaf blade narrowly elliptic, oblan- ceolate, obovate, or ovate, 3-8 × 1.5-2.5 cm, base cuneate-attenuate. Middle and lower stem leaves sessile; leaf blade narrowly elliptic to linear-elliptic, both surfaces glabrous, sometimes pinnatilobed below middle or near base, attenuate toward base, base auriculate- or subauriculate-semiamplexicaul. Distal stem leaves gradually smaller, sometimes pinnatisect. Synflorescence a lax flat-topped cyme; capitula 1-5. Involucre coryliform, 1-2 cm in diam.; phyllaries in 3 or 4 rows, abaxially glabrous, scarious margin white or brown. Ray florets white; lamina 1-2.5 cm. Achenes 2-3 mm, 10-ribbed, ribs projected into an apical rim. Pappus absent. Fl. and fr. May-Oct. 2n = 18, 36, 36+1B, 54, 72.
Widely cultivated as an ornamental, naturalized in grasslands. Fujian, Gansu, Hebei, Henan, Jiangsu, Jiangxi [native to Europe; introduced and naturalized elsewhere].