Flora of North America species comparison

5–20 cm diam.;

bark purplish brown or gray-brown, peeling irregularly;

young branches purplish brown and densely puberulous, becoming grayish purple or grayish brown and glabrous at maturity; flowering shoots producing spurs, (5–)10–20(–35) mm.

5–25 cm diam.;

bark reddish brown to gray, longitudinally fissured with platelike scales;

young branches reddish brown, sparsely puberulent, becoming gray or grayish brown, glabrescent; flowering shoots developing as short spurs or spiny thorns, (5–)10–40(–60) mm.

purplish brown, ovoid, 5–7 mm, scale margins sparsely pubescent.

reddish brown, ovoid, 1.6 mm, scale margins tomentose.

convolute in bud;

isomorphic;

stipules deciduous, lanceolate, 4–5 mm, apex acuminate;

petiole 10–50 mm, tomentose;

blade elliptic or ovate, (3.5–)5–9.5(–11) × (2–)4–5(–8) cm, base broadly cuneate, margins unlobed, acutely serrate or serrulate, sometimes doubly serrate, apex acuminate or acute, sometimes cuspidate, abaxial surface glabrous, adaxial puberulent or subglabrous.

conduplicate in bud;

heteromorphic;

stipules deciduous, linear-lanceolate, 2–4(–5) mm, apex acuminate; vigorous shoot leaves: petiole (10–)15–25 mm, villous, sometimes tomentose;

blade elliptic, oval, or ovate, sometimes triangular-ovate, (3.5–)4–6(–8) × (1.5–)3–4(–5) cm, base cuneate, sometimes rounded, margins sometimes slightly lobed, crenate, crenate-serrate, serrate, or entire, sometimes doubly serrate, apex rounded, broadly acute, sometimes apiculate, abaxial surface glabrous (villous only on veins), adaxial glabrous; flowering shoot leaves: petiole 3–10(–25) mm, villous, sometimes glabrous;

blade elliptic or oblong, sometimes ovate, obovate, or lanceolate, (9–)15–50(–65) × (7–)10–20(–30) mm, base cuneate, sometimes rounded, margins unlobed, crenate, crenate-serrate, or entire, apex rounded (with point or acute), abaxial surface glabrous (veins villous), adaxial glabrous.

umbel-like;

peduncles 0–2 mm;

bracteoles deciduous, rare, ± middle of pedicel, filiform, 3–4 mm.

corymblike;

peduncles absent;

bracteoles sometimes persistent, filiform, (1–)3–4(–6) mm.

20–35 mm, puberulous.

(10–)20–30(–40) mm, glabrous, sometimes slightly villous.

(30–)40–50 mm diam.;

hypanthium puberulent;

sepals triangular-lanceolate or lanceolate, 7–9 mm, longer than tube, apex acuminate, surfaces puberulent;

petals white, obovate or elliptic, 25–30 mm, claws 1–2 mm, margins entire, apex rounded;

stamens ca. 20, 8–10 mm, anthers yellow before dehiscence;

styles 4 or 5, basally connate 1/3 length, 9–11 mm, longer than stamens, proximally tomentose.

20–30 mm diam.;

hypanthium glabrous, rarely slightly villous;

sepals triangular, (2–)3–4(–5) mm, equal to tube, apex acuminate, abaxial surface glabrous, adaxial hoary-tomentose;

petals pink, sometimes fading white, oblong to narrowly obovate, (10–)12–16(–22) mm, claws (2–)3 mm, margins entire, sinuate, or fimbriate, apex rounded;

stamens 20, (7–)9–12(–14) mm, anthers pink or rose before dehiscence;

styles 5, connate basally, (6–)9–12(–15) mm, usually slightly longer than stamens, tomentose in proximal 1/3.

yellow to dark red, ovoid or oblong, 20–25(–34) mm diam., cores enclosed at apex;

sepals persistent, reflexed (erect), raised, swollen at base;

sclereids sparse surrounding core.

green or yellow-green, subglobose, 10–20(–30) mm diam., cores not enclosed at apex;

sepals persistent, erect;

sclereids abundant surrounding core.

dark brown.

dark brown.

= 34, 51.

= 34 (68).