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.

distal branches green to dull red;

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

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.

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.

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

1–3(–8)-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.

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

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.).

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.

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.

leathery.

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

3, 5 × 4–5 mm.

= 14, 28.

= 28.