《Flora of North America》|| Asteraceae || Conoclinium || Conoclinium coelestinum

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.

《Flora of China》|| Asteraceae || Conoclinium ||锥托泽兰 Conoclinium coelestinum

1. Conoclinium coelestinum (Linnaeus) Candolle, Prodr. 5: 135. 1836.

锥托泽兰 zhui tuo ze lan

Eupatorium coelestinum Linnaeus, Sp. Pl. 2: 838. 1753.

Herbs, perennial, 0.3-2 m. Stems usually erect, sometimes decumbent or procumbent and rooting at nodes. Leaves opposite, petiolate; leaf blade triangular to deltate or ovate, 2-7(-13) × 1.5-3 cm, base usually cuneate to truncate, rarely subcordate, margin serrate to serrate-dentate or crenate, apex acute. Phyllaries 3.5-4 mm; corollas blue to blue-violet or rosy violet, (1.6-)2-2.5 mm. Achenes 1-1.5 mm, glabrous; pappus setae not dilated at apices. Fl. and fr. Aug-Oct.

Cultivated and escaped, now growing in wet areas on slopes and roadsides. Guizhou, Yunnan [native to United States].