Flora of North America species comparison

alternate or opposite;

petiole absent or 0.1–2 mm, glabrous or puberulent;

blade ovate or oval to narrowly lanceolate, (0.4–)0.6–1.2(–1.4) × (0.2–)0.3–0.6 cm, margins somewhat revolute, apex obtuse, abaxial surface tomentulose, adaxial glabrous or sparsely puberulent toward base.

alternate (seemingly whorled on slow-growing twigs);

petiole 10–30 mm, glabrous or puberulent, sometimes stipitate-glandular;

blade elliptic to elliptic-lanceolate, 4–12 × 1.5–5 cm, margins plane, apex acute, surfaces stipitate-glandular, glabrescent abaxially, glabrous, midrib puberulent adaxially.

terminal, corymbiform racemes or umbels, (3–)6–8(–18)-flowered.

terminal, panicles, (12–)20–40-flowered.

5–11 mm.

20–40 mm.

sepals green, lanceolate, 1–1.2 mm, apex acute, surfaces glabrous, margins ciliate;

petals (spreading), distinct nearly their entire lengths, white or light pink, 3–4 × 2–3.5 mm, glabrous;

filaments 3–5 mm; (ovary stipitate-glandular);

style 3–4 mm.

sepals green to reddish, usually oblong, 3–3.5 mm, apex acute, surfaces glabrous or stipitate-glandular;

petals connate nearly their entire lengths, usually pink (ranging from deep red to white) with purple spots around each anther pocket, 20–25 × 15–30 mm, abaxial surface usually lightly stipitate-glandular, adaxial puberulent;

filaments 4–5 mm;

style 10–18 mm.

2–3(–5)-locular, (persistent style forming beak on each locule), 2.5–4 × 2.5–3 mm, glabrous.

5-locular, 3–5 × 4–7 mm, stipitate-glandular.

not winged, oblong to ovoid, 0.4–0.5 mm.

winged, obovoid and curved, 0.5–1 mm.

= 24.