Flora of North America species comparison

erect, virgate, branched.

erect to arching or prostrate, densely branched.

petiole 1–4 mm, pubescent;

blade usually ovate to elliptic, sometimes oblanceolate, 1–4(–5) × 1–2 cm, membranous, base obtuse, margins serrulate, usually from near base to apex, sometimes only distally from middle, rarely nearly entire with few teeth apically, venation pinnate cladodromous, secondary veins not prominent, apex acute to obtuse, abaxial surface lanate to glabrescent, adaxial glabrate.

petiole 2–5 mm;

blade ovate to oblanceolate, 3–5 × 1–1.5 cm (length 3 times width), membranous, base acute, margins entire or dentate teeth 1–4 in distal 1/4 of blade, 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 to acuminate, abaxial surface glaucous, mostly glabrous, adaxial glabrous.

mostly axillary, usually hemispheric panicles, sometimes simple fascicles, 3–6-flowered, sessile, 2–3 × 1–3 cm;

bractlets 3–7 × 3–5 mm;

branches pubescent.

mostly terminal, corymbiform or hemispheric panicles, 2–8 × 5–22 cm height 0.5–1 times diam.;

branches frequently in axils of leaves, usually glabrous or pubescent, sometimes villous.

10–30 mm, pubescent.

1–3 mm, usually glabrous or pubescent, sometimes villous.

5–15 mm diam.;

hypanthia campanulate, 1–1.2 mm, abaxial surface glabrous or sparsely hairy, adaxial glabrous;

sepals ovate to ovate-triangular, 1–3 mm;

petals white to cream, often with more than a single whorl of petals in most commonly escaped form, ovate to obovate, 2–10 mm;

staminodes 10–16, irregularly fused;

stamens 20–25, 0.5 times petal length.

5–7 mm diam.;

hypanthia turbinate to campanulate, 1.2–1.8 mm, surfaces glabrous or pubescent;

sepals triangular, 1–1.2 mm;

petals yellowish white, greenish white, or translucent white, ovate to orbiculate, 1.8–2 mm;

staminodes 0;

stamens 25–45, 2 times petal length.

oblanceoloid, 1.5–2 mm, glabrous, adaxial suture sparsely hairy.

oblanceoloid, 1.5–2 mm, shiny, glabrous.

= 18.