woolly on the crown of the root, otherwise quite glabrous; stem erect, striate, tall, leafy, ending in a much-branched, corymbose panicle; lower leaves oblong or obovate, acute or acuminate, tapering to the base, entire or remotely denticulate; upper numerous, cordate-eared and clasping at base, oblong or lanceolate, or linear-acuminate; partial corymbs many-headed, fastigiate, pedicels short, nearly nude; inv. of 5–8 glabrous, nerved scales, nearly nude at base; disc-fl. 10–12, rays 3–5; achenes quite glabrous. Stem 2-ft. high or more, leafy nearly to the base of the panicle, the upper leaves diminishing in size. Leaves very variable in size, and in the dentition of the margin, the wider ones penni-nerved, but even in the narrowest forms the upper leaves are amply cordate at base. Leaves in α, 4–6 inches long, 1–2 inches wide; in β, 3–4 inches long, 3/4–1 inch wide; in γ, much narrower. Panicle 6–10 inches across. Inv. 2–3 lines long, much shorter than the disc.
