Flora of North America species comparison

10–30 dm;

distal branches arching, bark dark brownish red;

infrastipular prickles single or paired, curved, falcate, 6–12 × 3–7 mm, lengths varying or ± uniform, internodal prickles sometimes mixed with aciculi and glandular setae.

climbing or vinelike, sometimes decumbent, 30–50 dm;

branches flexuous, brown;

infrastipular prickles usually paired, broad-based, internodal prickles paired or single, reddish brown, 4.5–9 × 6–9 mm.

persistent, 4–6.5 cm;

stipules 6–10 × 2–4 mm, auricles 3–5 mm, margins stipitate-glandular, surfaces glabrous, eglandular;

petiole and rachis with pricklets, puberulent, stipitate-glandular;

leaflets 5–7(–9), viscid glands with ripe apple scent, terminal: petiolule 5–10 mm, blade mostly suborbiculate or broadly oval, 10–25 × 8–15 mm, base obtuse, margins 2- or multi-serrate, teeth 10–18 per side, apex acute to obtuse, abaxial surfaces glabrous or pubescent, usually densely viscid-glandular, adaxial green, lustrous to dull, puberulent or glabrous.

stipules 3–4 × 2.5–3.5 mm, auricles 3–6 × 1.5–2 mm, surfaces tomentose;

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

leaflets: base cuneate, margins 1-serrulate-crenulate, teeth 12–16 per side, broad-based, apex obtuse to acute, often apiculate, gland-tipped, abaxial surfaces green with scattered pricklets and stipitate glands along prominent midveins, sometimes with hairs along midveins, eglandular, sometimes glabrous, adaxial glabrous, eglandular.

lateral and terminal.

panicles, 1–3(–7)-flowered.

erect, 6–9 mm, densely stipitate-glandular, sometimes mixed with aciculi [and setae];

bracts 2, ovate-lanceolate to lanceolate, 15 × 5 mm, margins stipitate-glandular, surfaces glabrous, eglandular.

bracts ovate-acuminate, (6–)8–10 × 5–7 mm, margins densely white sericeo-tomentose.

2–4 cm diam.;

hypanthium obovoid or broadly oblong, 5–6 × 3–4 mm, eglandular, neck (0–)1–1.5 × 3–4 mm;

sepals erect or spreading, rarely reflexed, lanceolate or ovate-lanceolate, 14–18 × 2 mm, margins mostly pinnatifid, tip 3–5 × 0.5–1 mm, abaxially densely stipitate-glandular;

petals bright or deep pink, 11–20 × 11–18 mm;

carpels 25–45, styles villous or glabrous, exsert 1–2 mm beyond stylar orifice (1.2–2 mm diam.) of hypanthial disc (2.5–4 mm diam.).

5–7(–10) cm diam.;

hypanthium 5–7 × 8–9 mm;

sepal margins sparsely glandular-ciliate, tip 2–5 × 1–2 mm;

petals 20–35 × 20–30 mm;

carpels apically pilose, exsert 2–2.5 mm beyond stylar orifice of hypanthial disc (1–2 mm diam.).

dark red, subglobose to broadly ovoid, ellipsoid, or pyriform, 10–25 × 7–22 mm, glabrous, sometimes setose, eglandular;

sepals tardily deciduous, mostly erect.

leathery.

15–25, tan, 3.5–4(–5) × 2–2.5(–3) mm.

30–40+, tan, 4–5 × 2–3 mm.

= 35, 42.

= 14.