Flora of North America species comparison

15–35(–40) cm.

petiole 1.2–8(–11.3) cm, short stipitate-glandular and densely long stipitate-glandular, longer hairs spreading or retrorse, reddish brown;

blade cordate-ovate to cordate-oblong, longer than wide, 2.7–7 × 1.5–5.4 cm, margins shallowly 5-, 7- or 9-lobed, doubly crenate-dentate or dentate, glabrous or irregularly ciliate, apex of terminal lobe acute to obtuse, surfaces sparsely short stipitate-glandular and long stipitate-glandular to sparsely long stipitate-glandular along primary veins abaxially, long stipitate-glandular adaxially;

cauline leaves absent.

1–3(–6), closely 20–60-flowered, 1(–2) flowers per node, not secund, 15–35(–40) cm, subglabrous or short stipitate-glandular and sparsely long stipitate-glandular proximally, short stipitate-glandular and, rarely, long stipitate-glandular distally.

1–2 mm, short stipitate-glandular.

hypanthium shallowly saucer-shaped, 0.8–1 × 2–3.5 mm;

sepals spreading to recurved, greenish, triangular, 0.7–1 × 0.9–1.9 mm;

petals greenish yellow, 3–9-lobed, 1.5–2 mm, lobes linear, lateral lobes spreading;

stamens 5, opposite sepals;

filaments white, 0.1–0.3 mm;

anthers 0.1–0.2 × 0.2–0.4 mm;

ovary nearly completely inferior;

styles divergent, flattened, 0.2–0.3 mm;

stigmas 2-lobed.

reddish purple or blackish, 0.8–1.1 mm, pitted.

= 14.