Flora of North America species comparison

biennial, erect-arching, sparsely to densely hairy, sparsely to abundantly stipitate-glandular, glands usually flattened to cupulate, not pruinose;

prickles sparse to dense, erect or slightly retrorse, stout, 4–10 mm, broad-based.

biennial, low-mounding to creeping, sparsely to moderately hairy, glabrescent, eglandular, not pruinose;

prickles sparse to moderate, slightly to strongly hooked, weak to stout, 0.8–1.5(–2) mm, broad-based.

deciduous, palmately compound, not lustrous;

stipules filiform to narrowly lanceolate, (2–)5–15(–20) mm;

leaflets (3–)5(–7), terminal ovate to lanceolate, 7–16 × 4–9 cm, base rounded to shallowly cordate, unlobed, margins finely to coarsely serrate or doubly serrate, apex acuminate to long-attenuate, abaxial surfaces with hooked prickles on midveins, moderately hairy, moderately to densely stipitate-glandular on veins.

deciduous, ternate or pinnately compound;

stipules filiform to linear, (4–)6–11 mm;

leaflets 3(–5), terminal broadly ovate-rhombic to obovate, (2–)3–5(–9) × 2.2–5(–7.5) cm, base cuneate to obtuse, slightly 3-lobed, margins coarsely serrate to doubly serrate, apex acute to obtuse, abaxial surfaces with slightly to strongly hooked prickles on veins, densely whitish-tomentose, eglandular or sparsely short-stipitate-glandular.

terminal on short shoots, sometimes appearing axillary, (5–)15–25-flowered, racemiform, often elongate.

terminal and axillary, 2–20-flowered, cymiform to thyrsiform.

unarmed or prickles sparse, hooked, densely hairy, densely short- to long-stipitate-glandular.

prickles moderate, slightly to strongly hooked, moderately hairy, eglandular or sparsely short-stipitate-glandular.

bisexual;

petals white, obovate to elliptic, rarely suborbiculate, 8–20 mm;

filaments filiform;

ovaries glabrous or glabrate.

bisexual;

petals pinkish to magenta, oblanceolate to obovate, 4–7 mm;

filaments filiform;

ovaries moderately to densely hairy, styles glabrous.

black, globose to cylindric, 1–2 cm;

drupelets 20–100, strongly coherent, separating with torus attached.

red, round, 0.6–0.9 cm;

drupelets 10–50, strongly coherent, separating from torus.

= 14, 21, 28.

= 14.