Flora of North America species comparison

pubescent to villous, eglandular.

strongly scabrid, glandular.

blade margins pinnatifid to 2-pinnatifid, pinnules lanceolate, surfaces not scabrid.

blade margins pinnatifid or slightly 2-pinnatifid, pinnules lanceolate to linear, surfaces strongly scabrid.

3–5 mm.

1.5–4 mm.

calyx lobes lanceolate;

corolla yellow, sometimes with maroon spots on adaxial lobes, externally pubescent, internally pubescent between lobes and in a ring at stamen insertion;

filaments tomentose to lanate distally, anthers dehiscing to 1/4 length.

calyx lobes lanceolate, margins denticulate;

corolla yellow, rarely with reddish streaks, externally glabrous, internally pubescent proximal to adaxial sinus, between lobes, and in a ring at stamen insertion;

filaments glabrous distally, anthers dehiscing 1/2+ length.

symmetric, pyriform, glabrescent to densely tomentose.

asymmetric, +/- falcate, glandular-pubescent.

irregularly shaped, wings present.

globular to ovoid, wings absent.

= 26.