Flora of North America species comparison

usually erect, (3–)5–12(–15) dm;

distal branches pubescent or glabrous, without stellate hairs;

infrastipular prickles absent, internodal prickles sparse to common, erect, (2–)6–10(–12) × 1–3 mm, pubescent at least basally, mixed with dense aciculi, to 3 mm.

distal branches green to dull red;

prickles internodal, curved, sometimes erect, rarely hooked, declined, 3–7 × 2–5 mm.

1.5–2.5 cm;

stipules 3.5–4 × 1.5–2 mm, margins entire or dentate with glands, surfaces pubescent, eglandular, auricles acute, (0.5–)2–3 mm, surfaces pubescent, eglandular;

petiole and rachis puberulent, stipitate glands and pricklets sparse;

leaflets 5–7, terminal: petiolule 1–4 mm, blade oval, suborbiculate, or obovate, 3–7 × 2–6 mm, margins deeply 1- or multi-lobed, usually glandular, teeth lobelike, (3 or)4 or 5(or 6) per side on distal 1/2 of blades, some multi-serrate, apex acute to obtuse, abaxial surfaces pubescent (especially on veins), adaxial dull, sometimes pubescent.

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.

1(–3)-flowered.

1–3(–8)-flowered.

2–9 mm, setae sparse, eglandular;

bracts 1 or 2.

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

2.5–3 cm diam.;

hypanthium subglobose to globose, 3–4 × 2.5–3.5 mm, densely pubescent and setose;

sepals spreading, 8–12 × 2–4 mm, tip 4–6 × 1–1.5 mm, lobes 3–4, margins usually gland-tipped, abaxial surfaces pubescent, setae sparse, eglandular or sparsely glandular;

petals usually pink to light rose pink, sometimes white, 10–15(–20) × 9–14 mm;

stamens 45;

carpels 10–25(–30), styles exsert 1–2 mm beyond stylar orifice (2–4 mm diam.), rims 0.5–0.8 mm wide.

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 reddish purple, subglobose, 5–7 × 5–7 mm, setae 1–4 mm, pubescent, eglandular.

leathery.

6–16, dark, ± terete-elongate, 3.5–4 × 1.5–2 mm.

3, 5 × 4–5 mm.

= 14.

= 28.