Flora of North America species comparison

relatively slender, bark relatively thin, not corrugated;

rhizomes sometimes present (relatively short, deep-seated);

caudices seldom branched.

blades silvery, lanceolate or lance-ovate, 9–30 × 2–7 cm (1-pinnatifid, lobes oblong to oblanceolate, 5–35 × 3–17 mm), bases cuneate, ultimate margins usually entire (plane or weakly revolute, obscurely, if at all, ciliate), apices rounded to acute, faces densely sericeous.

blades mostly lanceolate, lance-elliptic, lance-ovate, linear-oblong, oblong, or ovate, often 1–2-pinnatifid or -pinnately lobed, sometimes cordate, ultimate margins usually crenate, dentate, or serrate, seldom entire.

mostly proximal to mid stems.

mostly shorter than leaf blades.

campanulate to hemispheric, 11–20+ mm diam.

mostly yellow (becoming brick red and chartaceous in B. rosea).

15–20 mm (adaxially puberulous on veins).

broadly ovate to triangular-ovate, 12–20 mm, slightly surpassing inner, apices acuminate to attenuate (margins not ciliate).

borne singly.