Flora of North America species comparison

creeping, flowering branches erect, sparsely hairy, eglandular or sparsely to moderately short-stipitate-glandular, not pruinose.

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.

deciduous, simple or ternate;

stipules broadly elliptic to ovate, 5–10 mm;

leaflets 3(–5), blade reniform or orbiculate, terminal lobe or leaflets broadly obovate to obovate-cuneate, 1.5–4(–6) × 1.5–4(–6) cm, base cordate, 3(–5)-lobed, margins coarsely doubly dentate, apex rounded to acute, abaxial surfaces sparsely hairy on veins, eglandular.

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.

sparsely to moderately hairy, short-stipitate-glandular.

prickles moderate to dense, erect to reflexed, densely hairy, moderately to densely sessile- to short-stipitate-glandular.

bisexual;

petals white, broadly elliptic to obovate to orbiculate, (5–)8–10(–12) mm;

filaments filiform;

ovaries densely hairy, styles filiform, glabrous.

bisexual;

petals white to pink, elliptic to obovate, 8–15 mm;

filaments filiform;

ovaries usually apically hairy.

red, hemispheric, 1 cm;

drupelets 5–15, weakly coherent, falling separately or as loose units free from torus.

black, globose to subcylindric, 1–1.5 cm;

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

= 14.

= 28.