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, arching, sparsely to moderately hairy, long-stipitate-glandular, not pruinose;

prickles sparse to dense, erect to hooked, slender, 2–8(–10) mm, slender-based;

bristles dense, 2–6 mm, usually gland-tipped and reddish purple, glands ellipsoid to narrowly cup-shaped.

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, ternate;

stipules filiform, 5–12 mm;

terminal leaflets broadly deltate or ovate to suborbiculate, 4–15 × 3.5–14 cm, base truncate, rounded, or shallowly cordate, unlobed or dentate to shallowly, sharply or bluntly 3-lobed, margins coarsely serrate or doubly serrate, apex acute to acuminate, abaxial surfaces with scattered, erect to curved prickles on moderate- to large-sized veins, densely white-hairy, moderately to densely long-stipitate-glandular along veins.

1–2-flowered.

terminal and axillary, 5–30-flowered, cymiform to racemiform.

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

usually unarmed or prickles sparse, erect, moderately to densely hairy, densely long-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 white to pink, ovate to suborbiculate, 4–6 mm;

filaments laminar;

ovaries glabrous.

red, hemispheric, 0.4–1 cm;

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

red to maroon, globose, 1–1.5 cm;

drupelets 15–40, strongly coherent, separating from torus.

= 14.

= 14.