Flora of North America species comparison

ascending to erect, 0.3–1.2 dm.

decumbent to ascending, 1–3.5 dm.

weakly planar to loosely ± cylindric, (0.5–)2–4(–6) cm; sheathing base glandular abaxially, otherwise glabrous;

petiole 0.5–2 cm, hairs 0.2–1 mm;

leaflets 5–6 per side, 2–6 mm, ± short-hirsute, glandular-puberulent, lobes 2–7, oblanceolate to spatulate or obovate, apex not setose.

(3–)5–15(–18) cm; sheathing base glabrous or sparsely strigose abaxially;

stipules ± lanceolate, 2.5–5 mm;

petiole (0.3–)0.5–6(–8) cm, hairs sparse to abundant, appressed-ascending, 1–2 mm;

leaflets 15–20 per side, loosely overlapping, 2–10 mm, lobes 2–5, oblanceolate, hairs sparse to abundant, spreading to ascending, 1–2 mm.

1–3, not paired.

3–4.

3–14-flowered, 1–2.5 cm diam.;

glomerules 1.

5–20(–40)-flowered, (1–)1.5–2.5(–4) cm diam., flowers arranged in 1–few ± tight glomerules of 10–15 flowers.

1.5–6 mm.

1–4 mm.

8–10 mm diam.;

epicalyx bractlets linear to narrowly lanceolate or elliptic, 2.5–5 mm, longer than sepals;

hypanthium shallowly cupulate, 0.5–1 × 2–3 mm;

sepals 1.5–2.5 mm, ± acute;

petals pale yellow, linear to narrowly oblanceolate, 1.5–2.5 mm;

stamens 5, filaments 0.7–1.3 mm, anthers yellow, 0.5–0.8 mm;

carpels 6–11, styles 1–1.5 mm.

7–10 mm diam.;

epicalyx bractlets linear to oblong, 1–2(–2.5) mm;

hypanthium campanulate, 1–2 × 2.5–4 mm, ± 1/2 as deep as wide;

sepals green, 2–3(–3.5) mm, acute;

petals 4(–5), light yellow, oblanceolate to spatulate or narrowly obovate, 3–4 mm;

stamens 12–16 (4-merous flowers) or 16–20 (5-merous flowers), filaments filiform, 0.6–1.1 mm, anthers yellowish, 0.3–0.5 mm;

carpels 4–20, styles 1.4–2 mm.

cream to light tan, 1.2–1.5 mm.

light brown, 1–1.5 mm.