金腰箭舅属 jin yao jian jiu shu

Herbs, annual or perennial, small, usually procumbent or prostrate. Leaves opposite, petiolate, margin crenate-serrate. Capitula solitary or in small dense clusters, radiate; phyllaries ca. 5; receptacle with flat or concave paleae. Ray florets 5-8, female, yellow. Disk florets 4- or 5-lobed, yellow. Achenes oblanceolate-obconical, dorsiventrally compressed, tuberculate or smooth; pappus of 2 stout awns.

Three species: South to North America; one species (introduced) in China.

See MacVaugh and Smith, Brittonia 19: 268-272. 1967.

Lower Taxon

• Calyptocarpus vialis Lessing