Stipules persistent, subreniform, apex acuminate-caudate, base
amplexicaul, subcordate-subauriculate, tomentulose, margin glabrous, 6-12 x 3-5 mm.
aureum (C4) had large involucel bracts, which were ovate or circular, and large cauline leaves,
amplexicaul at base, cordate or with large ligules.
Leaves pinnately veined, glabrous to pubescent; basal leaves subrosulate; petiolate; blades oblanceolate, pinnately parted; upper leaves petiolate to
amplexicaul; blades lanceolate, margin entire to lobed.
is characterized by having yellow flowers, strongly 2-lobed stigmas, often pinnately divided but never auriculate or
amplexicaul cauline leaves, and simple or no trichomes.