Flora of North America species comparison

terete, herbaceous at base, not from subterranean, branched caudex, proximal stems 1 mm diam.

angular, sometimes lignescent at base, from subterranean, branched caudex.

leaflet blades lanceolate, margins usually entire, rarely shallowly lobed, sinus 0–1 mm, lateral leaflets 1.5–5.6 × 0.2–2.1 cm, terminal leaflet 1.7–5.4 × 0.2–2.3 cm, surfaces sericeous.

leaflet blades usually ovate, rarely orbiculate to lanceolate or panduriform, margins deeply to shallowly lobed or entire, sinus 0–18.2 mm, lateral leaflets 1.3–6.3 × 0.6–4.3 cm, terminal leaflet 1.8–7.2 × 0.9–4.6 cm, surfaces strigose.

with 1 or 2(–4) flower-bearing nodes.

with (1 or)2–5 flower-bearing nodes.

slender, herbaceous, 1.2–11(–12.3) cm, 0.2–0.7 mm diam.

stout, lignescent, (2.4–)5–21.5 cm, 0.8–1.3 mm diam.

bracteoles 0.8–2.3 mm, ± equal to calyx tube;

calyx tube 0.8–2.4 mm, lobes 0.5–1.5 mm;

banner light pink, 3.6–7(–8.3) mm;

wings light pink, 3.5–6.5 mm;

keel 3.5–6 mm, beak slightly curved, to 1 mm diam., mostly concealed by wings.

bracteoles 1.5–4.2 mm, equal to or longer than calyx tube;

calyx tube 1.3–3.6 mm, lobes 1–2.5 mm;

banner pinkish, 6.7–13.3 mm;

wings light pink, 7–9 mm;

keel 8–13 mm, beak slender, distinctly curved, 1 mm diam., projected away from face of banner, protruding well above wings.

subcylindric, laterally compressed, 1.2–4.7 × 0.2–0.4(–0.5) cm, usually sericeous.

cylindric, laterally compressed, 3–9.6 × (0.3–)0.4–0.8 cm, glabrous or sparsely strigose.

4–9, distinctly mottled, reniform to oblong, without cellular or waxy covering.

5–10, faintly mottled, with cellular or waxy covering.

usually annual, rarely short-lived perennial, with relatively long, slender taproot.

perennial, with thick taproot.

= 22.