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.

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

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, pedately compound;

stipules broadly ovate to suborbiculate, 2–3 mm;

leaflets 3 (often appearing as if 5), lateral leaflets deeply lobed, sinuses nearly to leaflet base, terminal obovate to obovate-rhombic, (1–)1.5–2.5(–3.4) × (0.8–)1.2–2(–2.5) cm, base cuneate, margins coarsely singly or doubly serrate, apex rounded to obtuse, abaxial surfaces glabrous or sparsely hairy on midvein, eglandular or sparsely stipitate-glandular.

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

1-flowered.

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

sparsely hairy, eglandular or sparsely stipitate-glandular.

bisexual;

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

filaments filiform;

ovaries glabrous or glabrate.

bisexual;

petals white, oblong to narrowly obovate, 6–10 mm;

filaments filiform;

ovaries glabrous, styles glabrous.

black, globose to cylindric, 1–2 cm;

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

red, 0.6–1 cm;

drupelets 3–6, weakly coherent, separating from torus.

= 14, 21, 28.

= 14.