Chrysanthemum boreale (Fischer ex Candolle) B. Fedtschenko (1915), not Makino (1909); C. tanacetum Visiani; C. vulgare (Linnaeus) Bernhardi (1800), not (Lamarck) Gaterau (1789); C. vulgare subsp. boreale (Fischer ex Candolle) Voroschilov; C. vulgare var. boreale (Fischer ex Candolle) Makino; Pyrethrum vulgare (Linnaeus) Boissier; Tanacetum boreale Fischer ex Candolle; T. crispum Steudel; T. vulgare subsp. boreale (Fischer ex Candolle) Kuvaev; T. vulgare var. boreale (Fischer ex Candolle) Trautvetter & C. A. Meyer.

Herbs, perennial, 30-150 cm tall, from creeping, ± branched rhizome; stems solitary or clustered, erect, upper part corymbosely branched, usually glabrous. Basal stem leaves petiolate; leaf blade elliptic or elliptic-ovate, ca. 20 × 8-10 cm, 2-pinnatisect, both surfaces green or pale green; primary lateral segments to 12-paired; ultimate segments ovate, obliquely triangular, or narrowly elliptic; middle and upper stem leaves similar, sessile. Synflorescence a ± dense flat-topped panicle. Capitula (5-)10-70(-100), heterogamous, disciform. Involucre campanulate, 5-13 mm in diam.; phyllaries in 3 rows, scarious margin narrow, white or brown, outer phyllaries ovate-lanceolate, ca. 1.5 mm; middle and inner ones lanceolate, 3-4 mm. All florets yellow, tubular; outer ones female, disk florets bisexual; corolla 1.5-2.4 mm. Achenes 1.2-2 mm. Corona 0.1-0.4 mm, margin dentate. Fl. and fr. Jun-Aug. 2n = 18, 18 + 2B.

The whole plant is used as an insecticide.

Mountain slopes, grasslands, floodlands, meadows, meadowy steppes, hills, forest understories; 200-2400 m. Heilongjiang, Nei Mongol, Xinjiang [Japan, Kazakhstan, Korea, Mongolia, Russia, Turkmenistan; Europe, North America].