Flora of North America species comparison

opposite;

petiole 0.1–3 mm, glabrous or puberulent (base ciliate);

blade usually oblong to linear, sometimes oval, 1.5–4.5 × 0.3–1.5 cm, margins usually revolute, apex obtuse to acute, abaxial surface puberulent, adaxial glabrate with puberulent bands on either side of midrib, midribs on both surfaces covered with purple, clavate trichomes.

solitary flowers or terminal, corymbiform racemes, 3–8(–17)-flowered.

15–30 mm.

sepals pale, translucent, white to light pink, ovate, 2.9–4 mm, apex obtuse, surfaces glabrous, margins ciliate;

petals connate their entire lengths, usually rose-purple or pink, rarely white, 9–11 × 12–18 mm, glabrous except puberulent near base abaxially;

filaments 4–5 mm;

style 4.5–7 mm.

5-locular, 4–6 × 4–7 mm, glabrous.

winged, oblong, 1.5–2.2 mm.

= 48.