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FOC | Family List | FOC Vol. 20-21 | Asteraceae | Ajania

33. Ajania pallasiana (Fischer ex Besser) Poljakov, Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk S.S.S.R. 17: 420. 1955.

亚菊 ya ju

Artemisia pallasiana Fischer ex Besser, Tent. Abrot. 61. 1832; Chrysanthemum pallasianum (Fischer ex Besser) Komarov; Pyrethrum pallasianum (Fischer ex Besser) Maximowicz; Tanacetum pallasianum (Fischer ex Besser) Trautvetter & C. A. Meyer.

Herbs, perennial, 30-60 cm tall. Stems erect, solitary or fascicled, shortly branched, appressed pubescent, especially on upper parts including peduncles. Basal and lower stem leaves withered at anthesis. Middle stem leaves with petiole 0.5-1 cm; leaf blade ovate, narrowly elliptic, or rhomboid, 2-4 × 1-2.5 cm, abaxially white or gray-white, appressed densely and thickly pubescent, adaxially green, glabrous, bipalmate or bipalmate-pinnately 3-5-sect; primary lateral segments 1- or 2-paired; ultimate segments linear or linear-lanceolate. Upper stem leaves similar, progressively smaller. Synflorescence a terminal compound flat-topped panicle, 3-5 cm in diam. Capitula few to many. Involucres broadly campanulate, 6-7 mm in diam.; phyllaries in 4 rows, straw-colored, glossy, abaxially glabrous, outer ones narrowly elliptic, 2.5-3 mm, apex with rounded waxy hyaline appendage, middle and inner ones long ovate, ca. 4 mm. Florets yellow, exterior with sessile glands; marginal female florets ca. 3, corolla tubular, ca. 3.5 mm, apex 5-denticulate; disk florets many, corolla tubular, ca. 3.5 mm, apex 5-lobed. Achenes ca. 1.8 mm. Fl. and fr. Aug-Sep. 2n = 36.

Thickets, mountain slopes; 200-2900 m. Gansu, Heilongjiang, Jilin, Liaoning, Shaanxi [Korea, Mongolia, Russia].


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