野艾蒿 ye ai hao

Artemisia araneosa Kitamura; A. argyi H. Léveillé & Vaniot f. eximia Pampanini; A. clemensiana Pampanini; A. codonocephala Diels; A. codonocephala var. maireana Pampanini; A. grisea Pampanini; A. lavandulifolia var. pekinensis Pampanini; A. selengensis Turczaninow ex Besser lusus umbrosa (Turczaninow ex Besser) Regel; A. selengensis var. umbrosa (Turczaninow ex Besser) Ledebour; A. tristis Pampanini; A. vulgaris Linnaeus var. umbrosa Turczaninow ex Besser.

Herbs, perennial, or shrubs, 50-120(-200) cm tall; stems robust, erect, gray arachnoid pubescent, glabrous or nearly so below synflorescence. Basal and lowermost leaves withering before anthesis, long petiolate; leaf blade ovate or suborbicular, 8-13 × 7-8 cm, 2-pinnatisect. Middle stem leaves: petiole 1-2(-3) cm, base with 1- or 2-lobed pseudostipules; leaf blade ovate, ovate-elliptic, or suborbicular, 6-8 × 5-7 cm, abaxially densely tomentose, adaxially white gland-dotted and sparsely arachnoid pubescent, (1 or)2-pinnatisect; segments 2 or 3 pairs, 30-50(-70) × 5-7(-9) mm; lobules 2 or 3 pairs, lanceolate or linear-lanceolate, serrate. Uppermost leaves and leaflike bracts pinnatisect or 3-lobed or entire; lobes or entire bracts linear-lanceolate or lanceolate. Synflorescence a narrow, leafy, conical panicle. Capitula many, pedunculate or ± sessile. Involucre ellipsoid or oblong, 3.5-4.5 × 2-2.5(-3) mm in diam.; phyllaries densely arachnoid tomentose. Marginal female florets 4-9; corolla ca. 1.5 mm, glabrous. Disk florets 10-20, bisexual; corolla purple, 2-2.8 mm. Achenes oblong or obovoid, ca. 1 mm, glabrous. Fl. and fr. Jul-Oct.

Roadsides, forest margins, slopes, steppes, canyons, riverbanks or lakesides, brushlands; 400-3000 m. Anhui, Gansu, N Guangdong, N Guangxi, Guizhou, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Jilin, Liaoning, Nei Mongol, Shaanxi, Shandong, Shanxi, Sichuan, Yunnan [Japan, Korea, Mongolia, Russia].

Artemisia lavandulifolia is used medicinally.