Flora of North America species comparison

pendent or prostrate to ascending, (0.2–)0.5–1.6(–3) dm.

prostrate to erect, (0.2–)0.5–4 dm.

planar, 2–15(–20) cm; sheathing base usually not strigose abaxially;

petiole 3–10 cm;

lateral leaflets (2–)3–4(–5) per side, separate, broadly ovate or obovate to orbiculate, (2–)5–15(–18) mm, incised 1/4–3/4 to base into (3–)7–11 ± ovate teeth, apex not setose, surfaces ± sparsely short-pilose, ± glandular;

terminal leaflets ± distinct.

tightly to loosely cylindric, (1–)3–20(–25) cm; sheathing base ± glandular abaxially, otherwise glabrous;

petiole 0.5–8 cm, hairs 0.2–0.5 mm;

leaflets (6–)10–25 per side, (1–)2–13(–18) mm, glabrous or ± hirsute or villous, glandular-puberulent or -pubescent, lobes (2–)4–8(–15), linear or narrowly oblanceolate to obovate, apex rarely setose.

1–3;

blade well developed.

1(–2), not paired.

(1–)5–30(–150)-flowered, open, 0.5–14 cm diam.

5–50(–70)-flowered, 1–8(–11) cm diam.;

glomerules 1–several.

5–30 mm.

1–3(–5) mm.

6–12 mm diam.;

epicalyx bractlets 0(–3), lanceolate, 0.9–1.8 mm;

hypanthium turbinate or campanulate, 1.5–3(–5) × 1–3(–4) mm;

sepals 2–4(–5) mm, acute;

petals yellow or white, oblanceolate to elliptic or obovate, (1.6–)2–4 mm;

stamens 5, filaments 0.8–1.3 mm, anthers ± yellow, oblong to narrowly ovate, 0.6–1.5 mm;

carpels (2–)6–10(–13), atop a stipelike torus, styles 0.9–1.8 mm.

5–12 mm diam.;

epicalyx bractlets linear to narrowly elliptic, (0.5–)1–3.5(–4) mm;

hypanthium turbinate to campanulate, (1.5–)2–4(–4.5) × 2–4(–5) mm;

sepals (2–)2.5–5(–6) mm, obtuse to ± acute;

petals yellow, narrowly oblanceolate to narrowly spatulate, (1–)1.5–3 mm;

stamens 5, filaments 1.3–2.5 mm, anthers yellow, sometimes red-margined, 0.5–1 mm;

carpels (1–)2–4(–6), styles 2.5–4.5(–6) mm.

greenish white to light tan, 1.2–2 mm, faintly rugose, ± carunculate.

grayish brown to mottled brown, ± 2 mm.