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.

usually spreading and arching, erect, 8–15(–20) dm;

distal branches erect or spreading, bark reddish when exposed, pruinose when young or shaded;

infrastipular prickles paired, erect, 5–6 × 3–4 mm, lengths ± uniform, internodal prickles similar or smaller, mixed with aciculi.

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.

deciduous, 8–11(–14) cm;

stipules 15–20 × 5–10 mm, auricles 5–8 mm, margins glabrous or ciliate, surfaces usually puberulent to tomentulose, sometimes glabrous, eglandular;

petiole and rachis without pricklets, pubescent, eglandular;

leaflets (5–)7, glands resin-scented when crushed, terminal: petiolule 10–17 mm, blade elliptic to ovate, 12–35 × 10–18 mm, base cuneate, sometimes rounded, margins 1–2-serrate, teeth 14–18 per side, apex acute, sometimes rounded, abaxial surfaces tomentose, resinous-glandular, sometimes eglandular, adaxial light green, dull, glabrous or mostly tomentulose.

1(–3)-flowered.

panicles, 1 or 2(–5)-flowered.

2–9 mm, setae sparse, eglandular;

bracts 1 or 2.

erect or slightly reflexed, (5–)15–35 mm, sparingly stipitate-glandular or eglandular;

bracts (1–)2, ovate-lanceolate, 10–12 × 4–5 mm, margins irregularly glandular-serrate, surfaces glabrous or pubescent, eglandular.

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.

3–4.5 cm diam.;

hypanthium globose, 5–7 × 5–7 mm, stipitate-glandular or setose, neck absent;

sepals spreading, ovate-lanceolate, 20–25 × (4–)5 mm, margins entire, tip 8–10 × 0.5–1 mm, abaxially densely glandular or stipitate-glandular;

petals deep pink, rarely white, 9–16 × 10–16 mm;

carpels 50–65, styles lanate, exsert 1.5 mm beyond stylar orifice (3.5 mm diam.) of hypanthial disc (5 mm diam.).

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

red to purplish, globose to depressed-globose, 11–16 × 12–15(–20) mm, glabrous, sometimes setose, stipitate-glandular;

sepals persistent, erect.

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

60, dark tan to black, 4–5 × 1.5–2 mm.

= 14.

= 28, 35, 42.