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Galinsoga Ruiz & Pav.
小米菊屬
Annual herbs. Leaves opposite, triple-nerved. Heads small, several-flowered, radiate. Ray florets 4 or 5, white or reddish, pistillate. Involucre of 4 or 5 ovate thin scales. Receptacle conical, with narrow paleae. Pappus of small, oblong, fimbriate paleaceous scales, sometimes wanting.
Fourteen species native from the southern United States to Argentina, mainly tropical America; two cosmopolitan weeds in Taiwan.
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KEY TO SPECIES
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Involucral bracts usually completely glabrous; inner paleae often deeply bifid or trifid; ray florets without pappus scales; pappus scales of disc florets not awn tipped. |
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Galinsoga parviflora |
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Involucral bracts usually with some stipitate glands; inner paleae entire or shallowly and irregularly trifid; ray florets with fimbriate pappus scales, scales about equalling floral tube; pappus scales of disc-florets awn-tipped. |
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Galinsoga quadriradiata |
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Lower Taxa
Related Synonym(s):
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Treatments in Other Floras @ www.efloras.org
Other Databases
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