Flora of North America species comparison

blades broadly ovate or suborbiculate, unlobed or 3- or 5-lobed, 3–6(–8) cm, surfaces: moderately to copiously hairy, hairs grayish to tawny, 10–30-armed, basal sinus open, not overlapping.

blades ± round, 3- or 5-lobed, to 5(–8) cm, thin to moderately thick, surfaces: adaxial dark green and glabrate, abaxial soft-tomentose, lobes triangular to rounded, basal sinus not overlapping.

usually short, interrupted, spicate to racemose, flower clusters sessile or short-pedunculate, glomerate to open, usually leafy;

involucellar bractlets filiform, 5–13 × 1 mm, mostly 2/3 to equaling calyx length.

short-spicate, flower clusters subsessile, congested;

involucellar bractlets filiform to linear, 3–9 × 0.5 mm, 3/4 to exceeding calyx length.

calyx angled or slightly winged in bud, 7–15 mm, lobes lanceolate, triangular, or ovate, 4.5–12 × 1.7–3(–4) mm, 2–3 times as long as wide, 2–3 times tube length, apex long-acuminate, densely stellate-hairy, hairs many-armed;

petals pink, to 2 cm.

calyx campanulate, 5–9 mm, lobes coherent, narrowly triangular, 3.5–6.5 × 1.5–2.3 mm, ca. 2 times as long as wide, 2–3 times tube length, apex long-acute to acuminate, densely villous;

petals white, fading lavender, 1.5 cm.

2–3.2 mm.

2–3 mm.

= 34.

= 34.