Flora of North America species comparison

erect to procumbent and vinelike, 10–20(–60) dm;

bark of canes green to light brown;

prickles infrastipular and internodal, single or paired, declined, usually curved, sometimes erect, stout, 3–4 × 7–9 mm, broad-based, sometimes mixed with aciculi, rarely absent.

usually spreading and arching, erect, 8–15(–20) dm;

distal branches erect or spreading, bark reddish when exposed, pruinose when young or shaded;

infrastipular prickles paired, erect, 5–6 × 3–4 mm, lengths ± uniform, internodal prickles similar or smaller, mixed with aciculi.

deciduous, 8–12 cm;

stipules narrowly lanceolate, 12–15 × 0.5–3 mm, auricles flared, 3–4 mm, margins entire, sometimes fimbriate, stipitate-glandular, surfaces glabrous, sparsely glandular;

petiole and rachis with or without pricklets, usually pubescent, stipitate-glandular;

leaflets 3 (mostly younger stems)–5 (older stems), terminal: petiolule 10–16 mm, blade ovate to elliptic-ovate, (30–)48(–70) × (20–)27(–40) mm, membranous or leathery, base rounded or obtuse, margins 1(–2)-serrate, teeth (18–)35(–42) per side, coarse, gland-tipped, apex usually acuminate, abaxial surfaces pale green, glabrous or pubescent to tomentose, sometimes sessile- and/or stipitate-glandular, adaxial darker green, dull, glabrous.

deciduous, 8–11(–14) cm;

stipules 15–20 × 5–10 mm, auricles 5–8 mm, margins glabrous or ciliate, surfaces usually puberulent to tomentulose, sometimes glabrous, eglandular;

petiole and rachis without pricklets, pubescent, eglandular;

leaflets (5–)7, glands resin-scented when crushed, terminal: petiolule 10–17 mm, blade elliptic to ovate, 12–35 × 10–18 mm, base cuneate, sometimes rounded, margins 1–2-serrate, teeth 14–18 per side, apex acute, sometimes rounded, abaxial surfaces tomentose, resinous-glandular, sometimes eglandular, adaxial light green, dull, glabrous or mostly tomentulose.

(1–)6(–15+)-flowered.

panicles, 1 or 2(–5)-flowered.

15–25 mm, glabrous, stipitate-glandular;

bracts 1 or 2, narrowly lanceolate, 10–30 × 1–2 mm, margins short stipitate-glandular, surfaces glabrous, eglandular.

erect or slightly reflexed, (5–)15–35 mm, sparingly stipitate-glandular or eglandular;

bracts (1–)2, ovate-lanceolate, 10–12 × 4–5 mm, margins irregularly glandular-serrate, surfaces glabrous or pubescent, eglandular.

functionally unisexual or monoecious, plants dioecious, 3–5 cm diam.;

hypanthium ovoid, 4–6 × 4–5 mm, stipitate-glandular;

sepals narrowly to broadly ovate-lanceolate, 10–18 × 2–4 mm, margins entire, tip 3–4 × 0.5–1 mm, abaxial surfaces pubescent, stipitate-glandular;

petals single, rose-purple to pink, fading to white, 18–25 × 16–25 mm;

stamens 212;

carpels 20–25, styles glabrous, exsert 5–6 mm beyond stylar orifice rims (0.5 mm diam.), hypanthial disc 2–3 mm diam.

3–4.5 cm diam.;

hypanthium globose, 5–7 × 5–7 mm, stipitate-glandular or setose, neck absent;

sepals spreading, ovate-lanceolate, 20–25 × (4–)5 mm, margins entire, tip 8–10 × 0.5–1 mm, abaxially densely glandular or stipitate-glandular;

petals deep pink, rarely white, 9–16 × 10–16 mm;

carpels 50–65, styles lanate, exsert 1.5 mm beyond stylar orifice (3.5 mm diam.) of hypanthial disc (5 mm diam.).

bright red, subglobose to globose, 6–10 × 6–9 mm, firm, sparsely stipitate-glandular often undeveloped because of dioecy, then early deciduous.

red to purplish, globose to depressed-globose, 11–16 × 12–15(–20) mm, glabrous, sometimes setose, stipitate-glandular;

sepals persistent, erect.

17–22, fawn, 4–5 × 2.5–3 mm.

60, dark tan to black, 4–5 × 1.5–2 mm.

= 14.

= 28, 35, 42.