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Crossostephium Less.

芙蓉菊属

Description from Flora of China

Subshrubs, pubescent. Leaves alternate, narrowly spatulate or oblanceolate, apically few lobed or entire. Capitula disciform, heterogamous, many, in a frondose raceme or panicle. Involucres hemispheric; phyllaries in 3 rows, outer ones herbaceous, inner ones broadly scarious at margin. Receptacle hemispheric, epaleate. Marginal female florets in 1 row, tubular, 2- or 3-denticulate, gland-dotted outside. Disk florets tubular, 5-lobed, gland-dotted outside. Anther obtuse at base, with apical oblong appendage; style branches linear, apex truncate. Achenes obovoid, weakly 5-ribbed. Pappus coroniform, of small scales.

Molecular data (Watson et al., BMC Evolutionary Biology; http://www.biomedcentral.com/1471-2148/2/17/; accessed 10 Apr 2011) suggests that Crossostephium is embedded within Artemisia.

One species: China, Japan.

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


 

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