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... more about "Ambrosia trifida"
John L. Strother +
Linnaeus +
Giant ragweed +  and grande herbe à poux +
Alta. +, B.C. +, Man. +, N.B. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Ala. +, Alaska +, Ariz. +, Ark. +, Calif. +, Colo. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Idaho +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Mont. +, Nebr. +, N.H. +, N.J. +, N.Mex. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Okla. +, Oreg. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Utah +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +, Wyo. +  and Mexico (Chihuahua). +
0–1600 m +
Disturbed sites, waste places, damp soils +
Flowering Jul–Nov. +
Illustrated +
Ambrosia aptera +, Ambrosia trifida var. integrifolia +  and Ambrosia trifida var. texana +
Ambrosia trifida +
Ambrosia +
species +