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.

ascending to erect, 8–25(–30) dm, densely to openly branched;

bark often glaucous when young, dark reddish brown with age sometimes exfoliating as thin ash-gray sheets, glabrous;

infrastipular prickles 1–2(–3), strongly curved to nearly erect, ± flattened, stout, subulate, 3–15(–20) × 2.5–8 mm (to 10–15 mm), base glabrous, internodal prickles usually absent, sometimes sparse, smaller, aciculi usually absent, rarely stipitate-glandular.

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–)4–14 cm;

stipules 5–20 × 2–5 mm, auricles flared to erect, 2–5 mm, margins entire or serrate, stipitate-glandular, surfaces glabrous, eglandular;

petiole and rachis sometimes with pricklets, usually sparsely to densely hairy hairs to 1 mm, rarely glabrate, sometimes stipitate-glandular;

leaflets 5–7(–9), terminal: petiolule 5–15(–20) mm, blade ovate to elliptic, sometimes obovate, (10–)15–40(–60) × 10–25(–30) mm, usually widest at or below middle, membranous to ± leathery, margins 1–2-serrate, teeth 7–20 per side on distal 3/4–4/5 of margin, obtuse to acute, eglandular or gland-tipped, apex ± obtuse, sometimes acute, abaxial surfaces pale green, sparsely to abundantly shaggy-hairy, sometimes more finely hairy and/or sparsely glandular, adaxial green, dull, sparsely hairy to subglabrous.

(1–)6(–15+)-flowered.

panicles, few corymbs, (1–)3–30(–50)-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, 3–20 mm, hairy, rarely glabrous, eglandular, rarely glandular;

bracts 1–3, broadly lanceolate, 8–20 × 2–10 mm, margins entire or serrate, eglandular or stipitate-glandular, surfaces ± hairy, 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.

2.5–5 cm diam.;

hypanthium ± ovoid, 4–6 × 3–5.5 mm, glabrous or sparsely hairy, eglandular, neck 1 × 2–4.5 mm;

sepals spreading, ovate-lanceolate, 10–15 × 2–4.5 mm, tip 1–5 × 0.3–1 mm, margins entire, eglandular, sometimes glandular, abaxial surfaces ± hairy, eglandular, sometimes stipitate-glandular;

petals single, pink, (10–)15–25 × (10–)15–25 mm;

stamens 90;

carpels (20–)25–40, styles exsert 1–2.5 mm beyond stylar orifice (1.5–2 mm diam.) of hypanthial disc (3–4 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, ± ovoid, sometimes globose to obovoid, 10–18 × 7–20 mm, fleshy, glabrous or ± hairy, eglandular, neck 0.5–2 × (2.5–)3–5(–6) mm;

sepals persistent, usually erect.

17–22, fawn, 4–5 × 2.5–3 mm.

basiparietal, (1–)5–20, cream to pale brown, (3–)3.5–4.5(–5) × 2–3 mm.

= 14.

= 28.