Flora of North America species comparison

prostrate to ascending, 0.2–1.5 dm.

decumbent to ascending, 1–3.5 dm.

tightly to loosely cylindric, (1–)2–12(–14) cm; sheathing base strigose to hirsute abaxially;

petiole 0.5–4 cm;

lateral leaflets (3–)5–15(–18) per side, separate to overlapping at least distally, ± flabellate, 1–4(–6) mm, incised to base or nearly so into 2–10(–12) oblanceolate to obovate or elliptic lobes, apex sometimes setose, surfaces ± sparsely hirsute, ± 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 or reduced.

3–4.

2–20-flowered, ± open, 0.5–4(–6) 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.

3–10(–12) mm.

1–4 mm.

5–10 mm diam.;

epicalyx bractlets 5, elliptic or narrowly oblong to ovate, 0.7–2(–3) mm;

hypanthium patelliform, 1–2 × 2.5–4.5(–5) mm;

sepals 1.5–3.5(–4) mm, acute to obtuse;

petals ± yellow, oblanceolate to spatulate or narrowly obovate, 1–3 mm;

stamens 5, filaments 0.8–1.8 mm, anthers yellow, oblong, 0.4–0.9 mm;

carpels 2–5(–6), styles 1.8–2.5 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.

greenish cream to light brown, 1.5–2.2(–2.5) mm, smooth, prominently carunculate.

light brown, 1–1.5 mm.