Flora of North America species comparison

erect to ascending, hairy, hairs malpighiaceous.

erect, usually hairy, hairs simple.

stipules deciduous, linear-lanceolate, to 1 mm, margins not glandular;

petiole absent;

blade elliptic, 1.5–4 × 0.6–2 cm, margins entire, without glands, surfaces hairy, hairs malpighiaceous.

stipules usually persistent, elliptic to ovate, frequently divided in 2 unequal segments, 1–8 mm, margins with tack-shaped glands;

petiole 4–15 mm, with tack-shaped glands;

blade elliptic, 1.5–6.5 × 0.7–1.8 cm, margins glandular-serrulate, with tack-shaped glands, surfaces usually hairy, hairs simple.

unisexual, 3–8 cm;

bracts linear-lanceolate, 2–4.5 mm, margins without glands.

bisexual, 0.9–1.8 cm;

bracts elliptic to lanceolate, to 7 mm, margins with tack-shaped glands.

without pink dye when wetted.

without pink dye when wetted.

sepals lanceolate to narrowly elliptic, 4–5.5 × 1.1–1.4 mm;

petals cuneate-elliptic to cuneate-obovate, 3.3–4 × 1.6–3 mm, free from androphore;

nectary glands oblong, 0.4–0.5 × 0.3–0.4 mm, adnate to androphore, glabrous;

stamens 10, staminodes 0.

sepals lanceolate, 3–4 × 0.4–1.2 mm;

petals elliptic to obovate, 4–7 × 1.4–1.8 mm, adnate to androphore;

nectary glands ovate, 0.5–0.7 × 0.3 mm, adnate to androphore, glabrous;

stamens 10, staminodes 3–5, glabrous.

sepals lanceolate to elliptic, 6–7 × 1.7–3.2 mm, without glands;

petals 0 or 5, linear, 0–1.7 mm;

nectary glands oblong, 0.5 × 0.7 mm, glabrous;

ovary tomentose to lanulose;

styles 1.5–3 mm, tomentose;

stigmas flattened.

sepals ovate, 4–6.5 × 1.4–2.1 mm, with tack-shaped glands;

petals 5, elliptic, 4–6 × 1.3–2.1 mm;

nectary glands ovate, 0.5–1 × 0.3–0.6 mm, glabrous;

ovary hispidulous, hairs malpighiaceous;

styles 1.5–2.5 mm, pilose;

stigmas flattened.

7–9 mm, tomentose to lanulose.

4–4.7 mm, hispidulous, long and short malpighiaceous hairs mixed.

3.7–5 mm, smooth, lightly tuberculate, or striate.

3–3.3 mm, with shallow depressions and sometimes also striate.