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.

erect, 1–8(–15) dm, openly branched;

bark dark reddish brown, glabrous;

infrastipular prickles single or paired, erect, subulate, 3–10 × 0.5–1.5 mm, base glabrous, internodal prickles dense, smaller, sometimes 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.

(2–)3.5–7(–8.5) cm;

stipules 5–10(–30) × 2–5 mm, auricles slightly flared, 1–3 mm, margins entire, sometimes stipitate-glandular, surfaces glabrous, eglandular;

petiole and rachis usually with pricklets, glabrous or finely hairy, stipitate-glandular;

leaflets 5(–7), terminal: petiolule 5–12 mm, blade ± elliptic, 12–25(–32) × 6–15(–20) mm, membranous to ± leathery, base rounded, sometimes obtuse to cuneate, margins multi-serrate to nearly 1-serrate, teeth (5–)7–12 per side, acute to obtuse, usually gland-tipped, apex obtuse to rounded, abaxial surfaces ± pale green, glabrous or sparsely hairy, glandular, adaxial green, dull, glabrous.

(1–)6(–15+)-flowered.

corymbs, 1–5(+)-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, mostly slender, 2–20(–35) mm, glabrous or sparsely hairy, sometimes stipitate-glandular;

bracts 1–3, lanceolate or ovate-lanceolate, 6–25 × 2–7 mm, margins entire or serrate, short stipitate-glandular, surfaces glabrous or sparsely pubescent, glandular.

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.

2–4 cm diam.;

hypanthium ovoid to depressed-globose, 3.5–4 × 3.5–4 mm, glabrous, eglandular, neck 0.5 × 2.5–3.5 mm;

sepals spreading to reflexed, ovate-lanceolate, 7–12 × 3 mm, tip 2–8 × 0.5–2 mm, margins entire or slightly toothed, abaxial surfaces finely hairy, stipitate-glandular, sometimes eglandular;

petals single, deep pink, 10–20 × 10–20 mm;

carpels 10–40, styles exsert 1.5 mm beyond stylar orifice (1.5–2 mm diam.) of hypanthial disc (3.5–5 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, subglobose to ovoid, 10 × 10–12 mm, fleshy, glabrous, eglandular, neck 1 × 4–5 mm;

sepals persistent, erect.

17–22, fawn, 4–5 × 2.5–3 mm.

basiparietal, 1–10, pale tan, 3–4 × 2.5–3 mm.

= 14.

= 14.