Flora of North America species comparison

erect, sometimes suckering, angled, glabrous or finely stellate-hairy.

stipules linear to narrowly elliptic, 4 × 0.5–2 mm;

petiole 1–2(–3) cm;

blade broadly ovate to obovate, (3–)4–8 cm, usually as wide as long, base rounded to truncate or slightly cordate, 3- or 5-lobed, margins irregularly crenate to doubly serrate, apex obtuse to acute, abaxial surface paler, glabrous or more densely stellate-hairy, adaxial glabrous or sparsely stellate-hairy.

alternate, simple;

stipules persistent or caducous, free;

venation palmate.

30–50-flowered, dense, hemispheric racemes, 3 cm diam., sometimes compound with some proximal pedicels becoming secondary peduncles;

bracts narrowly elliptic to spatulate, 4 × 2 mm, apex acute or erose-dentate, faces glandular.

1–1.5 cm, densely stellate-hairy.

5–8 mm diam.;

hypanthium cup-shaped, 2 mm, densely stellate-hairy;

sepals pale green to white, darker in center, triangular, 2–3 mm, apex gland-tipped, surfaces densely stellate-hairy;

petals white, broadly elliptic to orbiculate, 3–4 × 3–4 mm;

stamens equal to or exceeding petals;

carpels 3–5, connate basally, mostly glabrous, sometimes hairy (on ventral suture).

perianth and androecium perigynous;

epicalyx bractlets absent;

hypanthium cup-shaped to campanulate;

torus absent;

carpels 1–5, basally connate (distinct when single), free, styles terminal, distinct;

ovules 2–5[–10], marginal, pendulous, biseriate or clustered.

solitary or aggregated follicles;

styles persistent, not elongate.

2(–5), pyriform, 2.3–2.8 mm.

3–5, connate basally, shiny brown, ovoid, 5–7 mm (lengths slightly exceeding sepals), glabrous;

styles 2.5–3 mm.

= 18.