Flora of North America species comparison

erect, slender to stout, 2–20(–50) dm, densely or openly branched;

bark dark red, glabrous;

infrastipular prickles usually paired, sometimes absent, erect or curved to hooked, declined, or introrse, usually subulate, sometimes terete or flattened, stout, (0.5–)2–7(–13) × 1–5 mm, base glabrous, internodal prickles usually sparse to dense, often intermixed with aciculi.

2.5–8(–12) cm;

stipules (6–)9–16(–25) × 2–5 mm, auricles usually flared, 2–6 mm, margins usually entire, sometimes undulate, sparsely serrate, eglandular or glandular, surfaces glabrous, eglandular, rarely glandular;

petiole and rachis with pricklets sparse or absent, usually puberulent-velutinous hairs 0.1(–0.5) mm, rarely glabrate, eglandular, rarely stipitate-glandular;

leaflets 5–7(–9), terminal: petiolule 3–12 mm, blade obovate, elliptic, or ovate, rarely cordate, (6–)12–35(–40) × 6–20(–26) mm, usually widest at or above middle, membranous, base cuneate, rarely obtuse, margins 1(–2+)-serrate, teeth (5–)7–14 per side, on distal 1/2–4/5 of margin, acute, usually eglandular, apex acute or obtuse, abaxial surfaces pale green, glabrous, sometimes pubescent or puberulent, eglandular, sometimes glandular, adaxial green, rarely glaucous, dull, glabrous.

usually panicles, sometimes corymbs or solitary flowers, 1–10(–25+)-flowered.

erect, slender, 10–20(–33) mm, glabrous, eglandular, rarely stipitate-glandular;

bracts 2, ovate or lanceolate, (6–)9–20 × 4–9 mm, margins entire or ciliate, eglandular, sometimes sparsely glandular, surfaces pubescent, eglandular.

(2–)3–3.5(–5) cm diam.;

hypanthium ovoid, rarely oblong or globose, 3–6 × 3–5 mm, glabrous, eglandular, rarely stipitate-glandular, neck (0–)0.5–1 × 1.5–3.5 mm;

sepals spreading, ovate-lanceolate, 8–15(–21) × 1.5–2.5 mm, tip 4–6 × 0.3–1(–2) mm, margins usually entire, abaxial surfaces glabrous, eglandular, sometimes sessile- or stipitate-glandular;

petals single, pink to deep rose, 15–20(–25) × 15–20(–25) mm;

stamens 65;

carpels (16–)20–40(–50), styles exsert 1–2 mm beyond stylar orifice (2–2.5 mm diam.) of hypanthial disc (3–5 mm diam.).

red, orange-red, or purplish red, globose, depressed-globose, ovoid, oblong, or urceolate, 6–13(–16) × 5–12(–15) mm, fleshy, usually glabrous, eglandular, neck (0–)1–2 × 3–4(–7) mm;

sepals persistent, erect to spreading.

basiparietal, 15–40, tan to dark tan, (3.5–)4–5(–6) × 2–4 mm.