Flora of North America species comparison

erect, unbranched or branched distally.

erect or ascending, unbranched or several stems clumped from crown.

palmate;

stipules adnate entire length of petiole, sheathing, lanceolate-oblong, 0.8–1.3 cm, margins sharply and finely serrate, pilose, apex acute;

petiole 0.5–0.7 cm;

petiolules 0.5 mm;

leaflets (3–)5(–9), blades elliptic to linear-elliptic, 1–4 × 0.3–1.4 cm, base cuneate, veins prominent, cartilagenous, ending in sharp, curved teeth, margins setaceous, apex acute to obtuse, surfaces glabrous except midrib abaxially.

palmate;

stipules narrowly ovate, lanceolate, or linear-lanceolate, 1–2 cm, margins entire or toothed, apex acute;

petiole 0.5–20 cm;

petiolules 1 mm;

leaflets 3, blades usually rhombic, oblong, or elliptic, sometimes ovate, 2.5–5 × 0.6–2 cm, base cuneate, veins slightly thickened, margins setose-serrulate, apex obtuse or retuse, surfaces glaucous abaxially, glabrous.

terminal or axillary, 10–30-flowered, hemispheric or globose, 1.7–2.3 × 2.7–3.3 cm;

involucres oblique, to 0.5 mm, wavy to toothed.

terminal or axillary, 30–70+-flowered, globose or ovoid becoming subglobose, 1.5–4 × 1.8–3.3 cm, rachis prolonged beyond flowers, undivided or forked, often bearing sterile flower buds distally;

involucres absent.

1–5 cm.

straight, thick, 5–25 cm.

erect or horizontal, 1–3 mm;

bracteoles broadly shell-shaped, sometimes connate into lobed ridge, to 0.5 mm.

strongly reflexed in fruit, 1–1.5 mm;

bracteoles minute.

11–17 mm;

calyx campanulate, oblique, 6–9 mm, glabrous or sparsely hairy distally and along veins, veins 10, tube 3 mm, lobes subequal, pilose, abaxial slightly longer, subulate, orifice open;

corolla white to rose-purple, 10–15 mm, banner rolled into open tube, arched upwards distally, 10–15 × 4–5 mm, apex broadly rounded or acute, apiculate.

11–14 mm, sweetly fragrant;

calyx campanulate, gibbous, 4–6 mm, glabrous, veins 5, tube 2–3 mm, lobes unequal, narrowly triangular or subulate, orifice open;

corolla light purplish, sometimes with pink tips, 10–13 mm, banner straight, obovate to broadly elliptic, 13–18 × 6–8 mm, apex rounded or retuse, apiculate.

oblong, 6–8 mm.

oblong, 5 mm.

3–6, dark brown or gray-brown, globose-reniform, 1.5–2 mm, slightly roughened, dull.

2–4, reddish brown, flattened globose, 1.5–2 mm, smooth.

= 16, 32, 40, 48.

= 48.