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FNA | Family List | FNA Vol. 21 | Asteraceae | Conoclinium

3. Conoclinium coelestinum (Linnaeus) de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 135. 1836.

Blue mistflower

Eupatorium coelestinum Linnaeus, Sp. Pl. 2: 838. 1753; Conoclinium dichotomum Chapman

Stems usually erect, sometimes decumbent or procumbent (rooting at nodes). Leaf blades triangular to deltate or ovate, 2–7(–13) cm, bases usually cuneate to truncate, rarely subcordate, margins serrate to serrate-dentate or crenate, apices acute. Phyllaries 3.5–4 mm. Corollas blue to blue-violet or rosy-violet, (1.6–)2–2.5 mm. Cypselae 1–1.5 mm, glabrous; pappi: bristle tips not dilated. 2n = 20.

Flowering (Jun–)Aug–Nov. Stream banks, lakeshores, coastal and inland sands, pine-oak woodlands, low woods, flood plains, ditches, ravines, bogs, wet slopes, pine savannas, disturbed sites, roadsides, along railroads; 50–400 m; Ont.; Ala., Ark., Del., Fla., Ga., Ill., Ind., Kans., Ky., La., Md., Mich., Miss., Mo., Nebr., N.J., N.Y., N.C., Ohio, Okla., Pa., S.C., Tenn., Tex., Va., W.Va.


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