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Heads in a compound terminal corymb, not at all racemose 37–40 Heads small, mostly clustered in the axils of feather-veined leaves 3–7 Heads mostly large, in a terminal thyrse; leaves feather-veined.

Seeds 1 or 2 in each carpel, anatropous; albumen fleshy; embryo minute.—Leaves alternate, not toothed, marked with minute transparent dots, feather-veined.

Seeds anatropous, large, with a crustaceous seed-coat, and a minute embryo at the base of the ruminated albumen.—Leaves alternate, entire, feather-veined.

Achenes flat, obovate, winged or wingless, at maturity spreading in all directions; pappus of 2 or 3 smooth persistent awns.—Tall branching perennials, with serrate feather-veined leaves, tapering to the base and mostly decurrent on the stem.

In a day, the protective fuzz disappears, and the full-grown leaf is seen, thin, strongly feather-veined, uniformly green, saw-toothed.