Flora of North America species comparison

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

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.

with 1 or 2(–4) flower-bearing nodes.

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

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

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

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