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

35. Rhaponticum Vaillant, Königl. Akad. Wiss. Paris. 5: 177. 1754.

漏芦属 lou lu shu

Authors: Zhu Shi & Ludwig Martins

Acroptilon Cassini; Klaseopsis L. Martins; Leuzea Candolle; Stemmacantha Cassini.

Herbs, perennial. Stems erect, simple or branched. Capitulum homogamous, solitary, at end of stem or branches. Phyllaries imbricate, with narrow membranous margin or apical scarious or membranous appendage. Florets bisexual. Corolla pink to purple. Achene tetragonal or inconspicuously striate. Pappus elements in several rows, brittle, scabrid to shortly plumose; pappus elements of innermost row basally wider than and as long as or slightly longer than others.

About 26 species: Africa, Asia, Australia, Europe; four species (one endemic) in China.


1 Stem simple; capitulum 1; middle phyllaries with a conspicuous scarious appendage; involucre 3.5-6 cm in diam   (2)
+ Stem branched; capitula few to many, or if rarely 1 then middle phyllaries with a very narrow membranous margin but without an appendage; involucre 0.5-3 cm in diam   (3)
       
2 (1) Pappus elements scabrid; appendage of phyllaries glabrous or puberulent.   1 R. uniflorum
+ Pappus elements plumose; appendage of phyllaries villous.   2 R. carthamoides
       
3 (1) Involucre 0.5-1.3 cm in diam.; phyllaries with membranous appendage; corolla ca. 1.4 cm; achene 3.5-4 mm.   3 R. repens
+ Involucre 1.5-3 cm in diam.; phyllaries with very narrow membranous margin; corolla 1.8-3 cm; achene 5-8 mm.   4 R. chinense

Lower Taxa


 

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