Flora of North America species comparison

2–4(–10), weakly erect, ascending, or decumbent, 3–10 dm, glabrate or hairy, hairs 4-rayed, stellate, or scattered, simple.

1–4, erect, 5–20 dm, appearing glabrous, but often sparingly hairy, hairs simple, glaucous.

stipules persistent, oblong, ovate, or rhombic-ovate, 4.3–10(–12) mm;

petiole 2–25(–36) cm;

blade hastate, cordate, triangular, or ovate, 3- or 5(–7)-lobed, 3–11 × 3.5–13 cm, surfaces hairy, hairs 4-rayed and simple, lobes narrowly lanceolate, linear, linear-falcate, or lanceolate-falcate.

stipules caducous, subulate, 6–8 mm;

petiole 12–30 cm;

blade suborbiculate, cordate, or ovate, (3–)5–10-lobed, 3.5–15 × 6–20 cm, surfaces strigose, lobes linear to lanceolate.

racemose;

involucellar bractlets 3, rarely absent, narrowly linear, 2–10.5 × 0.1–1.7 mm.

paniculate;

involucellar bractlets absent.

bisexual;

calyx lobes valvate in bud, forming apiculate or acuminate point;

petals reddish purple without white basal spot, 2.2–4 cm.

bisexual;

calyx lobes valvate in bud, forming apiculate or acuminate point;

petals reddish purple with white basal spot, 1.8–3.1 cm.

7.7–11.2 mm diam.;

mericarps 12–20, 2.8–4.2 × 2–3.5 mm, glabrous or sparsely hairy, indehiscent;

beaks not prominent, 0.7–1.7 mm;

collars scarcely differentiated.

8–8.5 mm diam.;

mericarps 10–20, 3.5–4.5 × 2–3 mm, glabrous, indehiscent;

beaks not prominent, 0.5–1.7 mm;

collars absent or very weakly developed.

= 56, 112.

= 28.