Flora of North America species comparison

biennial, erect, then arching, usually moderately, rarely sparsely, hairy hairs stellate, eglandular, strongly pruinose;

prickles absent or sparse to dense, erect to hooked, stout, 3–10 mm, broad-based.

erect, thin, weak, ± woody basally, glabrous or sparsely hairy, eglandular, not pruinose.

persistent or nearly so, ternate to palmately compound;

stipules filiform to linear, 4–12 mm;

leaflets 3–5, terminal ovate, elliptic, or suborbiculate to obovate, 4–10 × 2–6(–9) cm, base rounded to cuneate, unlobed, margins finely to moderately serrate, apex acute or acuminate to attenuate, abaxial surfaces with hooked prickles on larger veins, densely white short-velutinous, hairs usually minute, eglandular.

deciduous, simple and usually 3-lobed or ternate;

stipules ovate to lanceolate, 4–8 mm;

blade margins dentate, serrate, or doubly serrate, abaxial surfaces sparsely to moderately pubescent, eglandular.

terminal, 10–60-flowered, paniculiform or thyrsiform.

axillary, 1–3-flowered.

unarmed or prickles moderate to dense, erect to hooked, densely short-hairy, eglandular.

glabrous or sparsely to moderately pubescent, eglandular or stipitate-glandular.

bisexual;

petals usually pink, sometimes white, obovate or elliptic to suborbiculate, 5–12 mm;

filaments filiform;

ovaries apically hairy.

bisexual;

petals pink to rose or magenta, obovate to oblanceolate, 8–25 mm;

outer filaments dilated basally, inner filiform;

ovaries glabrous or sparsely hairy, styles filiform.

black, globose to ovoid, 1–1.5 cm;

drupelets 10–40, strongly coherent, separating with torus attached.

reddish to dark purple, globose, to 1 cm diam., rarely larger;

drupelets (10–)15–30, weakly coherent, separating with torus attached.

= 14.