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.

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.

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

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

15–30 mm.

20–40 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.

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.

5-locular, 4–6 × 4–7 mm, glabrous.

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

winged, oblong, 1.5–2.2 mm.

winged, obovoid and curved, 0.5–1 mm.

= 48.

= 24.