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154. Filifolium Kitamura, Acta Phytotax. Geobot. 9: 157. 1940.

线叶菊属 xian ye ju shu

Authors: Zhu Shi, Christopher J. Humphries & Michael G. Gilbert

Herbs, perennial, base somewhat woody, covered with fibrous leaf sheaths; indumentum absent or of medifixed hairs. Leaves alternate, pinnatisect with long filiform lobes. Synflorescence a ± flat-topped cyme. Capitula small, heterogamous, disciform. Involucre hemispheric; phyllaries in 4 rows. Receptacle conical, epaleate. Marginal florets female; corolla tapering above, apex minutely 4-toothed. Disk florets apparently bisexual but functionally male, apex 5-lobed, compressed into resinous mass. Anther apical appendage triangular. Achenes obliquely obovoid, thinly walled, with 2 adaxial-lateral rows of myxogenic cells. Corona absent.

One species: China, Japan, Korea, Mongolia, Russia (Siberia).

Molecular data (Watson et al., BMC Evolutionary Biology;; accessed 10 Apr 2011) place Filifolium as the sister group to Artemisia subg. Dracunculus (Besser) Rydberg.

Lower Taxon


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