Flora of North America species comparison

spreading to ascending, branched.

spreading to arching, densely branched.

petiole 1–4 mm;

blade ovate to elliptic, 1–4 × 1–2(–3) cm, chartaceous, base usually obtuse, sometimes acute, margins crenate to serrate distally from middle, venation pinnate craspedodromous, secondary veins prominent, apex usually obtuse, sometimes acute, abaxial surface glabrous or puberulent, adaxial glabrous.

sometimes tardily deciduous;

petiole 1–2 mm or indistinct;

blade linear to lanceolate, 2.5–4 × 0.3–1 cm, membranous, base acute, margins irregularly, sharply serrulate, venation pinnate eucamptodromous, secondary veins not prominent, apex acuminate, surfaces glabrous.

mostly terminal, corymbiform or hemispheric panicles, 100–1000+-flowered, 2–4 × 2–4 cm height 0.8–1 times diam.;

branches glabrous or puberulent.

mostly axillary, hemispheric panicles, (2–)3–7-flowered, sessile on leafless stems in spring, 2–6 × 2–6 cm;

branches glabrous.

1–3(–5) mm, glabrous or puberulent.

5–8 mm, glabrous.

2–4 mm diam.;

hypanthia hemispheric, 0.5–1.1 mm, abaxial surface glabrous or pubescent, adaxial pubescent;

sepals triangular, 0.8–1 mm;

petals light to dark pink, ovate to obovate, 1–2.5 mm, veins prominent;

staminodes 5–10, reduced, fused, appearing as scalloped ring;

stamens 35–40, 2 times petal length.

6–8 mm diam.;

hypanthia crateriform, 2–4 mm, abaxial surface glabrous, adaxial glabrous or puberulent;

sepals ovate-triangular, 1.3–2 mm;

petals white, obovate to suborbiculate, 2–4 mm;

staminodes 10–14;

stamens 18–20, 0.3 times petal length.

oblanceoloid, 2–3 mm, shiny, glabrous, adaxial suture sparsely ciliate.

oblanceoloid, 1.5–2 mm, glabrous.

= 18.