Flora of North America species comparison

spreading to ascending, branched.

erect, 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.

petiole 2–7 mm;

blade ovate to lanceolate, 5–10 × 2–4 cm, membranous, base cuneate, margins sharply doubly serrate, number of primary and secondary serrations 3–5 times number of secondary veins (excluding inter-secondary veins), venation pinnate simple craspedodromous, secondary veins not prominent, apex acute, abaxial surface pubescent, adaxial 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 terminal, corymbiform, 5–8 × 5–15 cm;

branches finely villous.

1–3(–5) mm, glabrous or puberulent.

4–6 mm, finely villous.

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.

4–8 mm diam.;

hypanthia campanulate, 1–1.2 mm, abaxial surface strigose, adaxial pubescent;

sepals triangular, 1–1.3 mm;

petals light to dark pink, obovate, 1–1.5 mm;

staminodes 0;

stamens 25–30, 2 times petal length.

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

oblanceoloid, 2–3 mm, glabrous, adaxial suture glabrous or ciliate.

= 36.