Eupatorium coelestinum,Linn. (Conoclinium coelestinum, DC.). Mist-Flower. Somewhat pubescent: Lvs. opposite, stalked, triangular-ovate, somewhat cordate, thin, coarsely toothed: heads as in Ageratum in compact clusters, many-fld., light blue to violet. N. J. to Mich., Kans., and southward.—Perennial herb, late-blooming, heliotrope-fld. Appropriate to low borders.