东亚栉齿蒿 dong ya zhi chi hao

Subshrubs or herbs, 60-125 cm tall, with thick rootstock, puberulent or glabrescent. Basal and lowermost stem leaves: petiole 6-16 cm; leaf blade ovate or orbicular-ovate, 10-18 × 8-15 cm. Middle and upper leaves: leaf blade ovate or orbicular-ovate, 10-18 × 8-15 cm, 1(or 2)-pinnatipartite or -sect; segments 5 or 6 pairs; lobes linear or linear-lanceolate, pectinate to pectinate-serrate, apex acute. Leaflike bracts 3-5-lobed or entire, linear or linear-lanceolate, 45-65 × 4-8 mm. Synflorescence a long, narrow panicle. Involucre hemispheric or spherical, 4-6 mm in diam. Marginal female florets 10-15. Disk florets 30-40, bisexual. Achenes oblong or oblong-obovoid. Fl. and fr. Aug-Oct.

Steppes, dry river valleys, hills, wastelands, forest steppes; low to middle elevations. N Heilongjiang, N Nei Mongol [E Russia].