Flora of North America species comparison

usually prostrate-decumbent to ascending, sometimes ± erect, 1–4(–5.5) dm.

prostrate to decumbent, 0.2–0.6(–1) dm.

5–20 cm; sheathing base glabrous or densely strigose abaxially;

stipules absent or linear to lanceolate, 1–4 mm;

petiole 0.2–1.2 cm, hairs absent or sparse to dense, appressed or ascending, 0.5–2 mm;

leaflets 15–60 per side, loosely to tightly overlapping, (1.8–)2–6(–8) mm, lobes (0–)2–4, narrowly oblanceolate to obovate, hairs absent or sparse to dense, ± appressed, 0.2–0.5(–1) mm.

tightly cylindric, 1–4(–5) cm; sheathing base mostly not strigose abaxially;

petiole 0.3–2 cm, hairs 0.5–1 mm;

lateral leaflets 5–10(–12) per side, ± overlapping, ± flabellate, 1–2.5 mm, incised to base or nearly so into 3–5 obovate to oval lobes, apex sometimes ± setose, surfaces loosely long-strigose, sparsely glandular;

terminal leaflets indistinct.

4–15.

1(–2);

blade vestigial.

5–100-flowered, 1–12 cm diam., flowers arranged individually and/or in few to several loose glomerules of 2–10 flowers.

1–10-flowered, ± congested, 0.5–1.5 cm diam.

(1–)2–20(–25) mm.

3–7(–10) mm.

8–12 mm diam.;

epicalyx bractlets lanceolate to elliptic or ovate, (0.8–)1–2(–2.5) mm;

hypanthium shallowly cupulate, 0.5–2 × 1.5–4 mm, ± 1/2 as deep as wide;

sepals sometimes purple-suffused, 2–4(–5) mm, narrowly acute to acuminate;

petals white, spatulate or obovate to orbiculate, (2.8–)3–5(–6) mm;

stamens 20, filaments filiform, 1.5–2.5 mm, anthers white to cream, 0.3–0.6 mm;

carpels 2–9, styles 2–2.5(–3) mm.

6–9 mm diam.;

epicalyx bractlets 5, lanceolate to narrowly oblong or narrowly ovate, 0.8–1.3 mm;

hypanthium shallowly cupulate, ± 1 × 2–3(–4) mm;

sepals 1.5–2.3 mm, ± acute;

petals yellow, oblanceolate to spatulate, 2–3.2 mm;

stamens 5, filaments 0.9–1.2 mm, anthers yellow, oblong, 0.7–0.9 mm;

carpels 6–10, styles 1–1.5 mm.

light brown, 1.8–2.5 mm.

greenish cream to light brown, 1.4–1.8(–2) mm, smooth, not carunculate.