Flora of North America species comparison

decumbent to erect, glabrous or sparsely short-hairy, eglandular or sparsely stipitate-glandular, not pruinose.

biennial, creeping, glabrous, eglandular, strongly pruinose;

prickles sparse, erect or slightly curved, weak, slender, 2–3 mm, narrow-based.

deciduous, simple;

stipules lanceolate to narrowly ovate, 5–8(–14) mm;

blade orbiculate to reniform, (1.5–)2–4(–5) × (2.5–)3–4.5(–7) cm, base shallowly cordate, 3–5(–7)-lobed, lobe apices broadly rounded to obtuse, margins doubly dentate, abaxial surfaces sparsely hairy, mostly along veins, sparsely stipitate-glandular.

deciduous, ternate;

stipules filiform to linear, 3–10 mm;

terminal leaflets ovate to elliptic, 4–8 × 3–7 cm, base tapered or subcordate, often 2-lobed, margins coarsely dentate, apex acute to rounded, abaxial surfaces unarmed, densely white-tomentose, eglandular.

1-flowered.

terminal and axillary, (1–)2–4(–10)-flowered, cymiform.

pubescent, sparsely to densely short- to long-stipitate-glandular.

unarmed, finely hairy, stipitate-glandular.

bisexual;

petals white, obovate to ovate, 15–25(–30) mm;

filaments filiform;

ovaries glabrous, styles clavate, villous.

bisexual;

petals white, oblong to oblanceolate, 4–8 mm;

filaments laminar;

ovaries white-tomentose.

dark purple, hemispheric, to 1 cm;

drupelets 10–40, coherent, separating from torus.

reddish purple, hemispheric to conic, 0.4–1 cm diam.;

drupelets 10–40, coherent, separating from torus.

= 14, 21.