Flora of North America species comparison

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

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

annual, arching to mounding, glabrous, eglandular, not pruinose;

prickles sparse, slightly hooked, stout, 3–4 mm, broad-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, pinnately compound;

stipules lanceolate to oblanceolate, 8–13 mm;

leaflets (3–)5–7, terminal lanceolate to narrowly ovate, (5.5–)6.2–8.5(–9.7) × (1.8–)2.2–3(–4.2) cm, base usually rounded, sometimes truncate to subcordate, unlobed, margins finely to coarsely doubly serrate, apex acuminate, abaxial surfaces with prickles on midvein, glabrous, eglandular.

1–2-flowered.

solitary flowers or 2–3-flowered clusters.

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

prickles sparse, slightly hooked, glabrous, eglandular.

bisexual;

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

filaments filiform;

ovaries moderately hairy, styles glabrous.

bisexual;

petals white, broadly obovate to suborbiculate, 12–15(–18) mm;

filaments laminar;

ovaries glabrous, styles glabrous.

red, hemispheric, 0.4–1 cm;

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

red, oblong, 1.4–2 cm;

drupelets 50–100, strongly coherent, separating from torus.

= 14.

= 14.