Flora of North America species comparison

erect to arching, glabrate or sparsely to densely hairy, eglandular or sparsely short-stipitate-glandular, rarely densely long-stipitate-glandular, not pruinose;

bark usually papery with age, peeling (especially toward base);

prickles absent or sparse to dense, erect, slender, 1–5 mm, broad- to narrow-based.

biennial, creeping, glabrous, eglandular, strongly pruinose;

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

deciduous, ternate;

stipules filiform to linear, 3–10 mm;

terminal leaflets ovate, 4–15 × 3.5–15 cm, base truncate, rounded to shallowly cordate, shallowly, sharply lobed, margins coarsely serrate to doubly serrate, apex acute to acuminate, abaxial surfaces unarmed or with erect prickles on midvein, moderately to densely hairy, eglandular, rarely stipitate-glandular along midvein.

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.

terminal and axillary, 1–2-flowered.

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

unarmed or prickles sparse, erect, moderately to densely hairy, eglandular, rarely short-stipitate-glandular.

unarmed, finely hairy, stipitate-glandular.

bisexual;

petals pink to magenta, broadly to narrowly obovate, 10–30 mm;

filaments laminar;

ovaries glabrous.

bisexual;

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

filaments laminar;

ovaries white-tomentose.

yellow, orange, or red, globose to ovoid, 1–2 cm;

drupelets 20–80, strongly coherent, separating from torus.

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

drupelets 10–40, coherent, separating from torus.

= 14.