Flora of North America species comparison

erect to prostrate, branched from base.

erect, branched.

pinnate;

stipules ovate, 0.3–0.5 cm, margins entire, apex acute;

petiole to 1.5 cm;

lateral leaflet petiolules to 0.5 mm, terminal leaflet stalk 1–1.5 mm;

leaflets 3, blades obovate to elliptic-lanceolate, 1–2 × 0.5–1.5 cm, base cuneate, lateral veins prominent, ± parallel, ascending, margins dentate distally, apex rounded or retuse, surfaces glabrous or sparsely hairy.

palmate;

stipules ovate-oblong to lanceolate, 0.4–1.3 cm, sheathing proximally, margins entire or serrate, apex acuminate;

petiole 3–9 cm;

petiolules 0.5 mm;

leaflets 3, blades obovate to oblanceolate, 1.2–3 × 0.3–1.4 cm, base cuneate, veins fine, margins serrate, apex rounded or truncate, surfaces glabrous.

axillary or terminal, 5–20-flowered, ovoid or globose, 0.5–0.9 × 0.6 cm;

involucres absent.

axillary or terminal, 5–15-flowered, ellipsoid, 1–1.8 × 1.3–1.5 cm;

involucres flattened, 3–4 mm, shallowly incised, lobes 5–8, elliptic, apex rounded to truncate and irregularly erose, not split.

1–1.5 cm.

3.5–6 cm.

reflexed, 0.2–0.5 mm;

bracteoles a fringe of red setae.

erect, 1 mm;

bracteoles broadly ovate, to 0.5 mm.

2.8–3.5 mm;

calyx campanulate, 1.5–2 mm, glabrous, veins 5, tube 0.8–1 mm, lobes unequal, longer than tube, adaxial 2 shorter, orifice open;

corolla pale yellow becoming brown, 2.6–3.2 mm, not or slightly ribbed, banner persistent, spatulate, 2.6–3.2 × 2 mm, apex rounded to broadly acute.

7–11 mm;

calyx campanulate-tubular, 2.5–5 mm, glabrous, veins 5, tube 1–2.5 mm, lobes unequal, lanceolate-subulate, orifice open;

corolla reddish purple, 7–9 mm, inflated in fruit, banner oblong, 7–9 × 3–4 mm, apex rounded, retuse.

stipitate, ellipsoid, 1.5–2 mm, short beaked.

stipitate, ovate-oblong, 4 mm.

1, yellow or pale brown, ellipsoid, 0.9–1 mm, smooth, glossy.

1 or 2, red-brown, ovoid-ellipsoid, 2 mm, smooth or papillate.

= 16, 28, 32.