Flora of North America species comparison

erect or decumbent, branched.

erect, branched.

palmate;

stipules lanceolate or ovate, 1–5 cm, margins entire or denticulate, apex acuminate or acute;

petiole 1–15 cm;

petiolules 1 mm;

leaflets 3, blades linear, linear-elliptic, elliptic, lanceolate, lanceolate-oblong, or obovate, 1–5 × 0.4–1.2 cm, base cuneate, veins fine or ± thickened, margins denticulate or serrulate, apex acuminate or acute, surfaces appressed-pubescent abaxially, glabrous, densely villous, or sparsely or densely pilose adaxially.

palmate;

stipules lanceolate or ovate, 1–2 cm, margins dentate or lacerate, apex acuminate;

petiole 1–8 cm;

petiolules 0.5 mm;

leaflets 3, blades linear, lanceolate, or elliptic, 1–5 × 0.2–1.5 cm, base cuneate, veins fine, margins serrate, apex acute, blunt, or retuse, surfaces glabrous.

terminal or axillary, 25–70-flowered, inverted or horizontal, ellipsoid or globose to subglobose, 2–3 × 1–3 cm, rachis prolonged beyond flowers;

involucres absent.

axillary or terminal, 10–50-flowered, globose or ovoid, 1–3.5 × 1–3 cm;

involucres flattened or bowl-shaped, 3–9 mm, when folded, not hiding flowers except proximally, incised 1/4–1/3 their length.

bent distally, proximal to flowers, 3–18 cm.

2–15 cm.

reflexed, to 0.3 mm;

bracteoles absent.

erect, 0.5 mm;

bracteoles absent.

9–18 mm;

calyx campanulate, curved in fruit, 4–11 mm, villous, veins 10, tube 1.5–2.5 mm, lobes unequal, 2–3 times tube, subulate, often strongly curved and twisted, plumose, orifice open;

corolla white, cream, or purple, 8–16 mm, banner oblanceolate, 8–16 × 3–5 mm, apex rounded or retuse, recurved;

ovaries pubescent distally.

12–20 mm;

calyx tubular-campanulate, slit between adaxial lobes, 6–9 mm, glabrous, veins 10–15, tube 3–7 mm, lobes unequal, triangular or subulate, usually 3-fid or shouldered below apex, orifice open;

corolla usually white with purple spot, sometimes lavender or pink or all white, 10–18 mm, banner narrowly oblong, 12–20 × 3–4 mm, apex obtuse or retuse.

ovoid, 2–3.5 mm.

ellipsoid, 3 mm.

(1 or)2–4, yellow-brown to brown, mitten-shaped or subglobose, 1.2–2 mm, smooth.

1 or 2, yellow, mottled, globose-ellipsoid, 1.5–2.5 mm, smooth.

= 16.