stem straight, erect, glabrous, striate, simple or corymbose at summit; leaves scattered, subsessile, subcuneate at base, ovate or ovato-lanceolate, acute, calloso-serrulate, netted-veined, quite glabrous or the young ones cobwebbed, the upper smaller and narrower; corymb very compound, flat-topped (broom-like), many-headed, the pedicels long, filiform, sparsely scaly; inv. minutely calycled, glabrous, of 10–13 bluntish, keeled scales, shorter than the disc; rays 5–6, yellow, spreading; disc-fl. about 20; achenes hispidulous. Stem 2–3 ft. high, very straight, ending in a much-branched, broom-like corymb, which is 4–6 inches diameter, compact and flat-topped. Leaves 1 1/2–2 inches long, 1/4–1 inch wide, the lowest quite sessile and bluntly wedge-shaped or rounded at base, the uppermost often on 1 line long petioles, cuneate; under surface rather paler and closely netted. Pedicels 1–2 inches long. Heads 3 lines long, and equally wide. Rays 3 lines long.