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.

distal branches dark brown to purplish red;

infrastipular prickles paired, internodal prickles paired or single, reddish brown, rarely deltate or erect, 6–9 × 6–11 mm.

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.

stipules 4–6 × 1–2 mm, auricles 5–7(–10) mm, surfaces glabrous;

petiole and rachis sometimes with pricklets, glabrous, eglandular;

leaflets: terminal larger than laterals, base cuneate, margins 1-serrate, teeth 20–30 per side, tipped with dark glands, apex acute or acuminate, abaxial surfaces usually with pricklets on midveins.

(1–)6(–15+)-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.

densely setose;

bracts attached near base, lanceolate, 5 × 2–3 mm, margins not ciliate, 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.

1(or 2);

hypanthium 5–9 × 4–6 mm, densely setose, setae 2–3 mm, some gland-tipped;

sepal tip 5–10 × 2 mm;

petals 25–35 × 25–30 mm;

styles exsert 1–2 mm beyond hypanthium orifice.

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

leathery, base elongate, 7–12 mm, neck 1–2 × 6–9 mm.

17–22, fawn, 4–5 × 2.5–3 mm.

20–30, light tan, 6–8 × 3–4 mm.

= 14.

= 14.