Flora of North America species comparison

distal branches dark brown to purplish red;

infrastipular prickles paired, internodal prickles paired or single, reddish brown, rarely deltate or erect, 6–9 × 6–11 mm.

± flexuous, erect, to 20 dm, sparsely branched, distal branches and leaves glaucous, with purplish bloom;

bark becoming red-brown, glabrous;

infrastipular prickles absent, internodal prickles sparse or absent, aciculi absent or erect, curved, or declined, subulate, 2–5 × 1.5–4.5 mm, base mostly broad, eglandular.

stipules 4–6 × 1–2 mm, auricles 5–7(–10) mm, surfaces glabrous;

petiole and rachis sometimes with pricklets, glabrous, eglandular;

leaflets: terminal larger than laterals, base cuneate, margins 1-serrate, teeth 20–30 per side, tipped with dark glands, apex acute or acuminate, abaxial surfaces usually with pricklets on midveins.

6–10.5 cm;

stipules 13–16 × 1.5–2 mm, auricles flared, 2.5–5 mm, margins entire, eglandular or sparsely gland-fringed, surfaces glabrous, eglandular;

petiole and rachis usually with pricklets, glabrous, eglandular;

leaflets 5–7(–9), terminal: petiolule 10–20 mm, blade narrowly elliptic to ovate, 20–45 × 15–25 mm, leathery, base cuneate, sometimes rounded, margins 1-serrate, eglandular or few gland-tipped, teeth 12–18 per side, eglandular, apex acute, abaxial surfaces pale green, sometimes dull red, glaucous, glabrous, eglandular, adaxial green-red or purplish, glaucous, dull, glabrous.

corymbs, rarely panicles, 1–5-flowered.

densely setose;

bracts attached near base, lanceolate, 5 × 2–3 mm, margins not ciliate, surfaces glabrous, eglandular.

erect, slender, (10–)15–25 mm, glabrous, stipitate-glandular;

bracts 1 or 2, narrowly ovate-lanceolate, 8–23 × 3–6 mm, margins entire, eglandular, surfaces glabrous, eglandular.

1(or 2);

hypanthium 5–9 × 4–6 mm, densely setose, setae 2–3 mm, some gland-tipped;

sepal tip 5–10 × 2 mm;

petals 25–35 × 25–30 mm;

styles exsert 1–2 mm beyond hypanthium orifice.

2–3 cm diam.;

hypanthium narrowly ovoid, 5.5–7 × 3.5–5.5 mm, glabrous, eglandular, neck purplish, absent or 1 × 2 mm;

sepals spreading, lanceolate, 15–25 × 1.5–2 mm, tip 10–15 × 1 mm, margins entire, sometimes pinnatifid, abaxial surfaces glabrous, mostly stipitate-glandular;

petals single, deep pink to crimson-red, sometimes white basally, 8–14 × 5–6 mm;

carpels 30–32, styles exsert 1–2 mm beyond stylar orifice (1.5–2 mm diam.) of hypanthial disc (3 mm diam.).

leathery, base elongate, 7–12 mm, neck 1–2 × 6–9 mm.

dark brownish red to crimson red, globose, ovoid, or obovoid, 10–13 × 9–11 mm, fleshy, glabrous, eglandular, neck absent;

sepals deciduous as hips mature, erect to spreading.

20–30, light tan, 6–8 × 3–4 mm.

basiparietal, 15–23, light tan to tan, 4–4.5 × 2.5–3 mm.

= 14.

= 28.