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.

arching, 7–20(–30) dm, internodes long;

distal branches spreading, bark pale green;

infrastipular prickles single or paired, curved or ± erect, 3–6 × 2.5–3.5 mm, lengths ± uniform, internodal prickles sometimes mostly smaller, with aciculi, rarely absent.

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, 5–7.5(–11) cm;

stipules 10–16(–20) × 3–4 mm, auricles 2–5 mm, margins densely glandular-ciliate, surfaces tomentose, often glandular abaxially;

petiole and rachis with sparse pricklets, tomentulose, glandular;

leaflets 5–7, terminal: petiolule 6–8 mm, blade orbiculate to ovate-lanceolate or elliptic, 15–30(–60) × 8–22(–50) mm, base obtuse, margins 1- or multi-serrate, teeth 13–20 per side, apex acute, abaxial surfaces tomentose, usually resinous-glandular, glands resin-scented, adaxial pale or grayish green, dull, glabrous or pubescent.

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

panicles, 1–6-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, (11–)20–35 mm, densely stipitate-glandular;

bracts 2, ovate-lanceolate, 13–14 × 5–7 mm, margins ciliate-glandular, surfaces tomentose, glandular or 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.).

3.5–5 cm diam.;

hypanthium ovoid, 6–7 × 4 mm, stipitate-glandular, setose, rarely eglandular, neck 1.5 × 2 mm;

sepals spreading or erect, ovate-lanceolate, 15–25 × 2–3 mm, margins pinnatifid, tip 4–5 × 1–1.5 mm, abaxially densely stipitate-glandular;

petals pink, rarely white, 8–15 × 10–15 mm;

carpels 26–34, styles glabrous or villous, exsert 2–2.5 mm beyond stylar orifice (1 mm diam.) of hypanthial disc (2–4 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.

dark red, oblong, ovoid, or globose, 10–15 × 10–12 mm, glabrous, stipitate-glandular at least proximally, neck 1 × 5–6 mm;

sepals deciduous after anthesis, spreading or reflexed.

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

ca. 23, tan, 4–4.5 × 2 mm.

= 14, 28.

= 35.