紫菀木 zi wan mu

Aster alyssoides Turczaninow, Bull. Soc. Imp. Naturalistes Moscou 5: 198. 1832; Kalimeris alyssoides Candolle.

Low subshrubs, 8-15(-20) cm, white arachnoid-tomentulose. Stems branched from base, branches slender and short, lower part woody, bark reddish brown, herbaceous above, white arachnoid-tomentose, glabrescent. Leaves oblong-oblanceolate, 6-8 × 2-3(-4) mm, surfaces white arachnoid-tomentose, adaxially apically ± glabrescent, 1-veined, base attenuate, margin often revolute, apex shortly acuminate. Capitula radiate, solitary at ends of stems or in corymbiform synflorescences. Involucre campanulate, 6-7 × 12-13 mm; phyllaries 3-seriate, arachnoid-tomentose, margin broadly scarious, erose fimbriate, apex acute to obtuse, outer short, ovate-lanceolate, mid and inner oblong to oblong-oblanceolate. Ray florets 6-9, lamina spreading, bluish, ca. 8 × 1 mm; disk florets ca. 12, yellow, 5-6 mm, limb funnel-shaped. Achenes ca. 3 mm, densely long strigose. Pappus white, ca. 5 mm.

Sandy and dry lands. Nei Mongol [S Mongolia].