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Bidens
Also called Bur Marigolds, Tickseed Sunflowers, Burr Marigold, Beggartick, Devil's Sticktight, Spanish Needles, Beggars' Ticks
Bidens is a genus of flowering plants in the aster family, Asteraceae. The genus include roughly 230 species which are distributed worldwide. Despite their global distribution, the systematics and taxonomy of the genus has been described as complicated and unorganized. The common names beggarticks, black jack, burr marigolds, cobbler's pegs, Spanish needles, stickseeds, tickseeds and tickseed sunflowers refer to the fruits of the plants, most of which are bristly and barbed. The generic name refers to the same character; Bidens comes from the Latin bi ("two") and dens ("tooth").
Bidens includes roughly 230 species which are distributed worldwide throughout many tropical and warm temperate regions. Species occur in the Americas, Africa, Polynesia, Europe and Asia.
Bidens acrifolia · Bidens acuticaulis · Romerillo · Kokolau · Vancouver Island beggarticks · Bearded beggarticks · Arizona beggarticks · Beck's water-marigold · Delmarva beggarticks · Bigelow's beggarticks · Spanish needles · Bidens cabopulmensis
Text excerpted from the Wikipedia article Bidens by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
