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, arching, procumbent, or climbing, 15–30(–100) dm;

bark of canes green to reddish brown;

infrastipular prickles paired, curved, rarely erect, stout, 4–6 × 3 mm, internodal prickles fewer, similar, aciculi absent.

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, 5–12 cm;

stipules narrowly lanceolate, 8–13 × 1.5–2 mm, auricles flared, 4–8 mm, margins fimbriate, cleft to 3 mm, usually stipitate-glandular or gland-tipped, surfaces glabrous, sometimes puberulent, eglandular or sessile- or stipitate-glandular;

petiole and rachis with pricklets, puberulent, pubescent, or tomentose, usually stipitate-glandular, sometimes eglandular;

leaflets (5–)7–9(–11), terminal: petiolule 7–13 mm, blade obovate to elliptic, 10–45 × 8–25 mm, membranous, base cuneate, margins 1(–2)-serrate, teeth 12–20 per side, sharp, rarely gland-tipped, apex acute to long-acuminate, abaxial surfaces glabrous or pubescent (especially midveins), eglandular, adaxial green, dull, glabrous.

(1–)6(–15+)-flowered.

5–30+-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.

5–12 mm, pubescent (especially proximally), sometimes glabrous, stipitate-glandular or eglandular;

bracts 1 or 2, narrowly lanceolate, 5–10 × 1–2 mm, margins short stipitate-glandular, surfaces glabrous, 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.

sweet-scented, 1.5–2.5 cm diam.;

hypanthium oblong, 2 × 1–1.5 mm, eglandular or stipitate-glandular;

sepals ovate-acuminate, 6–10 × 1.5–2 mm shorter than petals, margins pinnatifid, tip 1–2 × 0.5 mm, abaxial surfaces glabrous, usually stipitate-glandular;

petals single or double, white, rarely pale pink, 7–13 × 5–9 mm;

carpels 6–11, styles glabrous, exsert 3–4 mm beyond stylar orifice rims (0.5–1 mm diam.), hypanthial disc 2–3 mm diam.

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

orange-red to red, ovoid to globose, (4–)5–7(–10) × 5–7 mm, eglandular or sparsely stipitate-glandular.

17–22, fawn, 4–5 × 2.5–3 mm.

6–11, tan, 3.8–5 × 2–2.5 mm.

= 14.

= 14.