Flora of North America species comparison

erect, hairy, hairs simple and malpighiaceous.

usually erect, rarely prostrate in var. pilosissima, hairy, hairs malpighiaceous.

stipules persistent, elliptic, lanceolate, or subulate, sometimes divided in 2 unequal segments, 1.7–2.5 mm, margins with conic glands;

petiole 2–6 mm;

blade elliptic, 0.8–1.9 × 0.4–1.2 cm, margins serrate, with conic glands, surfaces hairy, hairs simple and malpighiaceous.

stipules deciduous, subulate to ovate, 0.3–0.5 mm, margins not glandular;

petiole usually absent, rarely to 4 mm on proximal leaves;

blade lanceolate, elliptic, ovate to obovate, 1.5–7.5 × 0.6–3.5 cm, margins entire or serrulate, without glands, surfaces hairy, hairs malpighiaceous.

bisexual, to 0.5 cm;

bracts ovate, 2–3 mm, margins with conic glands.

bisexual or unisexual, to 12 cm;

bracts ovate to lanceolate, 1.5–2.5 mm, margins without glands.

without pink dye when wetted.

without pink dye when wetted.

sepals lanceolate, 2.5–3.5 × 0.4–0.5 mm;

petals elliptic, 3–4 × 0.8–1.2 mm, adnate to androphore;

nectary glands narrowly elliptic, oblong, or ovate, 0.3–0.7 × 0.2–0.3 mm, free from androphore, glabrous;

stamens 10, staminodes 3–5, glabrous.

sepals lanceolate to narrowly elliptic, 2.3–3 × 0.7–0.8 mm;

petals elliptic to spatulate, 2–2.5 × 0.8–1 mm, free from androphore;

nectary glands linear to obovate, 0.3–0.5 × 0.1–0.2 mm, free from androphore, glabrous or pubescent;

stamens 8, staminodes 0.

sepals lanceolate to ovate, 2.5–4.5 × 0.8–1.3 mm, margins with conic glands;

petals 5, elliptic, 2–3 × 0.7–1.2 mm, margins with glandular teeth;

petals elliptic, 2–3 × 0.7–1.2 mm;

nectary glands ovate to linear, 0.3–0.5 × 0.2–0.5 mm, glabrous;

ovary hispidulous;

styles 1–2 mm, glabrous;

stigmas flattened.

sepals elliptic, 1–7 × 0.3–3 cm, without glands;

petals 0 or 5, elliptic, linear, or punctiform, less than 0.5 mm;

nectary glands linear, 0.7 × 1.5 mm, glabrous or pubescent;

ovary strigose;

styles 0.8–1.5 mm, pubescent;

stigmas flattened.

3–4.5 mm, hispidulous.

6–14 mm, hispidulous to strigose.

2.5–3 mm, with shallow depressions, lightly striate.

3.2–4.5 mm, smooth to slightly papillate.