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.

± flexuous, 10–20 dm, densely branched;

bark dark red to brown, glabrous;

infrastipular prickles paired, erect, sometimes curved, stout, 4–7 × 2.5–3 mm, base glabrous, internodal prickles absent, aciculi rare.

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.

4–8 cm;

stipules often convolute, 8–15 × 3–8 mm, auricles flared, (1.5–)3–5(–7) mm, margins entire or crenate, sparsely to densely stipitate-glandular, surfaces glabrous, sometimes pubescent, eglandular;

petiole and rachis without pricklets, pubescent, eglandular, sometimes sparsely or densely sessile-glandular;

leaflets 5(–7), terminal: petiolule 4–9 mm, blade elliptic to ovate, 20–40 × 12–18 mm, membranous, margins 1-serrate, teeth 9–18 per side, eglandular or gland-tipped, apex acute, abaxial surfaces pale green, ± glaucous, pubescent (especially on veins) or glabrous, glandular, adaxial green, dull, sometimes sparsely pubescent.

(1–)6(–15+)-flowered.

corymbs, 1 or 2(or 3)-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, slender, 7–17 mm, glabrous, eglandular;

bracts 2, ovate or ovate-lanceolate to obovate, 6–15 × 6–10 mm, margins ciliate, stipitate-glandular, surfaces mostly pubescent, sometimes glabrous.

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.

3–5 cm diam.;

hypanthium hemispheric, 4–5 × 3–4 mm, glabrous, eglandular, neck absent;

sepals spreading, lanceolate or ovate-lanceolate, 18–25 × 2.5–4 mm, tip 5–8 × 1–2 mm, margins entire, rarely pinnatifid, lobes 1 or 2, abaxial surfaces pubescent, eglandular or sparsely sessile- or, rarely, stipitate-glandular;

petals double, rarely single, pinkish purple, 9–15 × 9–11 mm;

carpels 25–35, styles exsert 4 mm beyond stylar orifice (2.5–3 mm diam.) of hypanthial disc (4–4.5 mm diam.).

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

scarlet, globose, 9–11 × 8–10 mm, fleshy, glabrous, eglandular, neck absent;

sepals persistent, erect or spreading, hips rarely maturing.

17–22, fawn, 4–5 × 2.5–3 mm.

basal, 17, dark tan, 3–3.5 × 1.5 mm.

= 14.

= 14.