Plant Characteristics
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herbaceous
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ExpandRead about Bidens in the Standard Cyclopedia of Horticulture
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Bidens (Latin, two-teeth, in reference to the awns). Compositae. Bur-marigold. Stick-tights. Tick-seed. Annual, or rarely perennial, herbs, mostly American, related to Coreopsis, Dahlia, and Cosmos.
Leaves opposite, serrate or incised, often pinnately or ternately divided: heads radiate or discoid; rays yellow or white; disk yellow; involucre double, the outer set of bracts green and more or less foliaceous, the inner of quite different texture and shape, more appressed, thinner, more scarious and striate: achenes flat or angled; pappus of 2-4 stiff bristles or awns, usually retrosely barbed.—Plants grown as garden annuals. B. frondosa, a common weed, is the well-known bootjack bur, or stick-tight.
B. dahlioides, Wats. A perennial with dahlia-like tubers. Mex.
The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.
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