Flora of North America species comparison

± prostrate, (0.1–)0.2–1.5(–2) dm.

decumbent to ascending, 1–3.5 dm.

tightly cylindric, 2–10 cm; sheathing base densely hairy abaxially;

petiole 0.5–4(–10) cm;

lateral leaflets 4–10(–15) per side, overlapping at least distally, ± flabellate, 0.5–3(–4) mm, incised to base or nearly so into (0–)2–4(–9) elliptic to obovate or orbiculate lobes, apex usually not setose, surfaces densely hirsute, cryptically glandular;

terminal leaflets indistinct.

(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.

(0–)1;

blade vestigial.

3–4.

5–60(–100)-flowered, congested, 0.5–5(–7) cm diam.

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

1.5–4(–8) mm.

1–4 mm.

4–8 mm diam.;

epicalyx bractlets 5, linear to elliptic or narrowly ovate, 0.8–1.6(–2.1) mm;

hypanthium patelliform to shallowly cupulate, 1–1.5 × (1.5–)2–3(–3.5) mm;

sepals 1.4–2.5(–2.8) mm, acute;

petals white to pale yellowish, linear to narrowly oblanceolate, 1–1.5 mm;

stamens 5, filaments 0.6–1.8 mm, anthers maroon or yellow with maroon margins, oblong, 0.3–0.6 mm;

carpels 1–2(–4), 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.

brown, 1.2–1.6(–2) mm, smooth, prominently carunculate.

light brown, 1–1.5 mm.