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.

distal branches green to dull red;

prickles internodal, curved, sometimes erect, rarely hooked, declined, 3–7 × 2–5 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 subulate, 14–24 × 3–5 mm, auricles 4–10 mm, surfaces pubescent, eglandular;

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

leaflets 5(–7), terminal blade slightly rugose, base obtuse to subcordate, margins shallowly 1(–2)-dentate-crenate, teeth 14–23 per side, apex acute to acuminate, abaxial surfaces pale, gray green, sessile-glandular particularly on midveins, adaxial bluish green or dark green.

panicles, 1–3(–7)-flowered.

1–3(–8)-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 1 or 2, caducous, lanceolate, 8–14 × 2–4 mm, margins ciliate, surfaces glabrous or pubescent, eglandular or stipitate-glandular.

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.).

hypanthium 5–7 × 3–5(–7) mm, neck (0–)1 × 3 mm;

sepal tip 7 × 2 mm, erect or spreading;

petals 27–35 × 20–30 mm [or larger];

styles exsert 2–4 mm beyond hypanthium orifice.

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.

3, 5 × 4–5 mm.

= 35, 42.

= 28.