Flora of North America species comparison

erect to arching, glabrate or sparsely to densely hairy, eglandular or sparsely short-stipitate-glandular, rarely densely long-stipitate-glandular, not pruinose;

bark usually papery with age, peeling (especially toward base);

prickles absent or sparse to dense, erect, slender, 1–5 mm, broad- to narrow-based.

biennial, creeping, tip-rooting, flowering branches often erect, glabrous or sparsely hairy, sparsely to densely short- to long-stipitate-glandular, rarely eglandular, not pruinose;

prickles sparse to dense, erect to retrorse, weak, slender, 1–3(–5) mm, narrow-based;

bristles sparse to dense, erect or retrorse, narrow, flexible and weak, not gland-tipped.

deciduous, ternate;

stipules filiform to linear, 3–10 mm;

terminal leaflets ovate, 4–15 × 3.5–15 cm, base truncate, rounded to shallowly cordate, shallowly, sharply lobed, margins coarsely serrate to doubly serrate, apex acute to acuminate, abaxial surfaces unarmed or with erect prickles on midvein, moderately to densely hairy, eglandular, rarely stipitate-glandular along midvein.

persistent, ternate or, rarely, palmately compound, lustrous;

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

leaflets 3(–5), terminal obovate to suborbiculate, 1.7–6.5 × 1–5.2 cm, base cuneate to rounded, unlobed, margins moderately to coarsely doubly serrate, apex acute to rounded, abaxial surfaces with bristles on midvein or unarmed, glabrous or sparsely hairy, sparsely to densely short-stipitate-glandular along largest veins.

terminal and axillary, 1–2-flowered.

terminal on short shoots, usually appearing axillary, 1–7(–10)-flowered, racemiform.

unarmed or prickles sparse, erect, moderately to densely hairy, eglandular, rarely short-stipitate-glandular.

unarmed or bristles moderate to sometimes dense, erect to retrorse, moderately to densely hairy, sparsely to densely short- to long-stipitate-glandular.

bisexual;

petals pink to magenta, broadly to narrowly obovate, 10–30 mm;

filaments laminar;

ovaries glabrous.

bisexual;

petals white, obovate to oblanceolate, 6–10 mm;

filaments filiform;

ovaries glabrous.

yellow, orange, or red, globose to ovoid, 1–2 cm;

drupelets 20–80, strongly coherent, separating from torus.

black, globose to cylindric, to 1 cm;

drupelets (5–)10–15(–20), strongly coherent, separating with torus attached.

= 14.

= 14, 21, 28, 35, 56.