37. Artemisia tanacetifolia Linnaeus, Sp. Pl. 2: 848. 1753.
裂叶蒿 lie ye hao
Artemisia laciniata Willdenow; A. laciniata f. dissecta Pampanini; A. laciniata var. glabriuscula Ledebour, p.p.; A. laciniata var. macrobotrys (Ledebour) Maximowicz; A. macrobotrys Ledebour; A. orthobotrys Kitagawa; A. sacrorum Ledebour f. japonica Pampanini; A. sacrorum var. major Pampanini; A. sacrorum f. platyphylla Pampanini; A. serreana Pampanini.
Herbs, perennial, 50-70(-90) cm tall, rootstock horizontally creeping to obliquely rising, ± woody, shortly branched apically, pubescent, glabrescent. Basal leaves long petiolate. Lower and middle stem leaves: petiole 3-12 mm; leaf blade elliptic-oblong or elliptic-ovate, 3-12 × 1.5-5(-8) cm, sparsely gland-dotted, abaxially densely hairy, adaxially glabrous or sparsely hairy, 2- or 3-pinnatisect; segments 6-8 pairs; lobes pectinately lobulate; lobules elliptic-lanceolate, sometimes sparsely serrulate; rachis narrowly winged. Uppermost leaves and leaflike bracts 1- or 2-pinnatisect or entire; bracts linear or linear-lanceolate. Synflorescence a few to many branched panicle, 10-15 × 4-8 cm. Capitula many, shortly pedunculate, nodding, approximate or not. Involucre globose or hemispheric, 2-3(-3.5) mm in diam.; phyllaries glabrous or nearly so, outermost oblong-oval, greenish, scarious margin narrow, brown with colorless edge. Florets yellow, 48-52. Marginal female florets 8-15; corolla narrowly tubular, glandular. Disk florets 30-40, bisexual; corolla limb puberulent. Achenes ellipsoid-obovoid, finely longitudinally striate. Fl. and fr. Jul-Oct.
Forest steppes, steppes, meadows, outer forest margins, saline soils, hills, shrublands; low elevations to 2400 m. Gansu, N Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol, Ningxia, N Shaanxi, N Shanxi [Kazakhstan, Korea, Mongolia, Russia; C and E Europe, North America (Alaska, Canada)].
Artemisia tanacetifolia is used as herbage for feeding livestock.