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, sometimes creeping, glabrate to moderately hairy, sparsely to densely sessile- to short-stipitate-glandular, not or weakly pruinose;

prickles moderately dense to dense, suberect to retrorse or hooked, stout, 2–8 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.

evergreen to late-deciduous, ternate or palmately compound;

stipules filiform, 5–15 mm;

leaflets 3–5, terminal ovate to elliptic, 6–12 × 7–12 cm, base rounded to cordate, usually deeply, rarely shallowly, lobed, margins coarsely serrate to doubly serrate, apex acuminate to short-attenuate, abaxial surfaces with hooked prickles primarily on midvein, moderately to densely hairy, eglandular or moderately sessile- to short-stipitate-glandular primarily on midvein.

1–2-flowered.

terminal, 5–25-flowered, thyrsiform.

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

prickles moderate to dense, erect to reflexed, densely hairy, moderately to densely sessile- to 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 white to pink, elliptic to obovate, 8–15 mm;

filaments filiform;

ovaries usually apically hairy.

red, hemispheric, 0.4–1 cm;

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

black, globose to subcylindric, 1–1.5 cm;

drupelets 25–60, strongly coherent, separating with torus attached.

= 14.

= 28.