Flora of North America species comparison

10–45(–51) cm.

petiole 1.8–18 cm, medium and long stipitate-glandular, longer hairs retrorse, white or tan;

blade ovate to broadly ovate, ± as long as or longer than wide, 1.4–8.5 × 1.4–9.6 cm, margins shallowly to prominently 3- or 5-lobed, crenate or dentate, irregularly to regularly ciliate, apex of terminal lobe acute, rarely obtuse, surfaces subglabrous or sparsely short and long stipitate-glandular;

cauline leaves 2, mid cauline or distal, opposite or subopposite, subsessile to short-petiolate, blade (1.1–)1.6–8 × 0.7–6.5 cm.

1–5, remotely or closely 5–22(–27)-flowered, 1 flower per node, not secund, 10–45(–51) cm, sparsely to densely spreading or retrorsely long stipitate-glandular proximally, short stipitate-glandular distally.

1–3 mm, short stipitate-glandular.

hypanthium broadly campanulate, 1–1.6 × 2–3.4 mm;

sepals spreading, greenish white or yellowish green, triangular, 1–1.3 × 0.8–1.1 mm;

petals white, 9–11(–15)-lobed, 2–4 mm, lobes linear, lateral lobes spreading or ascending;

stamens 10, opposite and alternate with sepals;

filaments white, 0.2–0.3 mm;

anthers 0.1–0.3 × 0.1–0.2 mm;

ovary nearly superior;

styles divergent, flattened, 0.1–0.2 mm;

stigmas unlobed.

dark reddish brown or blackish, 1.2–1.6 mm, nearly smooth.

= 14.