Flora of North America species comparison

ascending to erect, (2–)4–20(–25) dm, openly branched;

bark ± glaucous when young, dark reddish brown or dull red with age outer layer may exfoliate as thin ash gray peel, glabrous;

infrastipular prickles usually paired, erect, rarely curved, usually subulate, 2–10 × 2–4 mm, base glabrous, internodal prickles rare or absent.

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.

5–10(–13) cm;

stipules 8–22 × 2–5 mm, auricles flared, 2–5 mm, margins usually entire, sometimes erose or lobed, finely ciliolate to ciliate, eglandular, surfaces glabrous or sparsely pubescent, sparsely stipitate-glandular or eglandular;

petiole and rachis sometimes with pricklets, glabrous or hairy hairs to 1 mm, sometimes stipitate-glandular;

leaflets 5–7(–9), terminal: petiolule 8–12 mm, blade elliptic-ovate, (15–)20–45(–60) × 9–16(–20) mm, widest at or below middle, membranous, base cuneate to obtuse, margins 1(–2)-serrate, teeth 12–22 per side, on distal 3/4–4/5 of margin, acute, eglandular, apex acute, sometimes obtuse, abaxial surfaces pale green, usually sparsely pubescent, eglandular, adaxial green, dull, glabrous, rarely puberulent.

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.

corymbs, sometimes panicles or solitary flowers, 1–12-flowered.

panicles, 1 or 2(–5)-flowered.

erect, sometimes recurved, slender, 10–22 mm, usually glabrous, sometimes finely puberulent, eglandular, rarely stipulate-glandular;

bracts 2–3, lanceolate, 8–14 × 3–6 mm, margins entire, sometimes serrate, irregularly stipitate-glandular and/or erose, surfaces glabrous or pubescent, eglandular.

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.

2.4–3.8 cm diam.;

hypanthium ovoid-urceolate, 3–5 × 2.5–3.5 mm, glabrous, rarely setose, eglandular, neck (0–)0.5–1 × 2 mm;

sepals spreading, ovate-lanceolate, 10–17 × 1.5–3 mm, tip 3–7(–10) × 1.5–2.5 mm, margins entire, abaxial surfaces sometimes puberulent, densely or sparsely stipitate-glandular, rarely eglandular;

petals single, pink to deep pink, 12–18 × 10–18 mm;

stamens 75;

carpels 22–35, styles exsert 1–2 mm beyond stylar orifice (1 mm diam.) of hypanthial disc (3.5 mm diam.).

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.).

scarlet, globose, sometimes subglobose or ovoid, 7–15 × 7–13 mm, fleshy, glabrous, eglandular, rarely setose- or stipitate-glandular, neck (0–)1–1.5 × 1.5–3.5 mm;

sepals persistent, erect.

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

sepals persistent, erect.

basiparietal, 5–35, tan, 3–4 × 1.5–2.5 mm.

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

= 14, 28.

= 28, 35, 42.