Flora of North America species comparison

erect to arching, branched.

spreading to arching, densely branched.

petiole 3–8 mm, sparsely hairy;

blade ovate to elliptic or suborbiculate, 2–10 × 1–2.5 cm, coriaceous, base obtuse, rounded, or subcordate, margins irregularly, coarsely and sharply doubly serrate from midpoint to apex, teeth acute and mucronate, number of primary and secondary serrations 1 times number of secondary veins (excluding inter-secondary veins), venation pinnate cladodromous, secondary veins not prominent, apex acute, obtuse, or rounded, abaxial surface mostly glabrous, 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, 2–5 × 3–10 cm height 0.4–1.1 times diam.;

branches rarely in axils of leaves, glabrous or glabrate.

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

branches glabrous.

1–3 mm, glabrous or glabrate.

5–8 mm, glabrous.

4–7 mm diam.;

hypanthia hemispheric, 0.8–1 mm, abaxial surface glabrous or pubescent, adaxial glabrous;

sepals triangular, 0.5–1 mm;

petals chalky white to pink, orbiculate, 1.3–1.5 mm;

staminodes 5–15 reduced to serrations;

stamens 15–20, 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.

nearly fusiform, 2–3 mm, shiny, glabrous.

oblanceoloid, 1.5–2 mm, glabrous.

= 36.

= 18.