Flora of North America species comparison

perennial, creeping, sparsely hairy, glabrescent, eglandular, not pruinose;

prickles sparse, strongly retrorse, stout, to 1 mm, broad-based.

biennial, ascending, often arching, glabrous or sparsely puberulent, eglandular or sparsely to densely short-stipitate-glandular, strongly pruinose;

prickles moderate to dense, erect or curved, slender to stout, 4–8 mm, usually broad-based, sometimes narrow-based.

evergreen, simple or ternate;

stipules adnate to petioles, broadly elliptic to ovate, (6–)8–10 mm;

blade ovate to cordate, (2.5–)3–5(–8) cm, lobe or leaflet base cordate, shallowly 3-lobed, margins coarsely, singly or doubly dentate, apex acute to obtuse, abaxial surfaces with prickles along midveins, glabrous or sparsely hairy, eglandular, both surfaces lustrous fresh.

deciduous, palmately compound or ternate;

stipules filiform, 5–10 mm;

petiole with hooked or erect prickles, glabrous, eglandular or sparsely to densely sessile- to short-stipitate-glandular;

lateral leaflets stalked, at least 2 larger ones, often with prickles, glabrous, eglandular or stipitate-glandular;

leaflets 3–5(–7), terminal ovate to lanceolate, 6–10 × 3–6 cm, base cordate to truncate, unlobed or shallowly 3-lobed, margins serrate to doubly serrate, apex acuminate, abaxial surface sometimes with prickles on midrib and some lateral veins, glabrous to strongly white-tomentose, usually eglandular.

1–2-flowered.

axillary and terminal, (1–)3–10(–12)-flowered, flat-topped cymiform or umbelliform.

prickles scattered, retrorse, moderately to densely hairy, eglandular.

prickles sparse to dense, hooked or erect, puberulent, eglandular or sparsely to densely sessile- or short-stipitate-glandular.

bisexual;

petals magenta to pink, elliptic to oblanceolate or spatulate, (5–)8–10 mm;

filaments filiform;

ovaries moderately hairy, styles glabrous.

bisexual;

petals erect, then ascending, white, oblong to oblanceolate, 3–6(–8) mm;

filaments laminar;

ovaries pubescent, rarely glabrous.

red, hemispheric, 0.4–1 cm;

drupelets 3–10, not coherent, separating from torus.

reddish purple to nearly black, depressed globose to conic, 1–2 cm;

drupelets 20–60, coherent, separating from torus.

= 14.

= 14.