楔叶菊 xie ye ju

Chrysanthemum zawadskii Herbich subsp. latilobum (Maximowicz) Kitagawa; C. zawadskii var. latilobum (Maximowicz) Kitamura; C. zawadskii subsp. naktongense (Nakai) Y. N. Lee; Dendranthema naktongense (Nakai) Tzvelev; D. zawadskii (Herbich) Tzvelev var. latilobum (Maximowicz) Kitamura; Leucanthemum sibiricum Candolle var. latilobum Maximowicz.

Herbs, perennial, with procumbent rhizomes. Stems erect, 10-50 cm tall, branched above middle or apically shortly branched, rarely unbranched, sparsely pubescent, especially in upper part and near synflorescence or glabrescent to glabrous. Middle stem leaves long petiolate; leaf blade elliptic to narrowly elliptic or ovate, 1-3 × 1-2 cm, both surfaces glabrous or soon glabrescent, palmate-pinnately 3-7-lobed or -parted, base cuneate or broadly cuneate. Distal stem leaves obovate, oblanceolate, or narrowly oblanceolate, 3-5-divided or entire. Synflorescence a lax terminal flat-topped cyme. Capitula 2-9, 3.5-5 cm in diam. Involucres cup-shaped, 1-1.5 cm in diam.; phyllaries in 5 rows, abaxially sparsely villous or glabrescent, outer ones linear or linear-lanceolate, 4-6 mm, apex rounded, broadly scarious, middle and inner ones elliptic or narrowly elliptic, 4.5-6 mm, margin and apex white or brown scarious. Ray floret lamina white, pink, or pale purple, 1-1.5 cm, apex entire or 2-denticulate. Achenes ca. 2 mm. Fl. and fr. Jul-Aug. 2n = 36.

Grasslands; 1400-1700 m. Gansu, Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol, Shandong, Shanxi [Korea, Mongolia, Russia].