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Stilpnolepis Krasch.

百花蒿属

Description from Flora of China

Elachanthemum Y. Ling & Y. R. Ling.

Herbs, annual. Leaves opposite or alternate, pinnatisect, few lobed or entire. Capitula hemispheric or globose, homogamous, discoid, laxly corymbose or solitary at apex of branches. Involucres hemispheric or cupular-hemispheric; phyllaries in 3-5 rows, herbaceous, margin broadly scarious. Receptacle convex-subconical, epaleate. Florets tubular, bisexual, 5-lobed, with distinct tube and ± crateriform limb. Anther obtuse at base, with apical acuminate-triangular appendage. Style branches linear, apex truncate. Achenes obliquely obovoid to narrowly obovoid-oblanceolate, densely glandular, striate. Pappus absent.

Oberprieler et al. (in Kadereit & C. Jeffrey, Fam. Gen. Vasc. Pl. 8: 349, 357, 364. 2007) accepted Elachanthemum as a distinct genus on the basis of the smooth pollen, which placed it in a different group of genera from Stilpnolepis.

Two species: China, Mongolia; two species in China.

(Authors: Shi Zhu (石铸 Shih Chu); Christopher J. Humphries, Michael G. Gilbert)


 

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