Flora of North America species comparison

ribbed, (1.5–)5–10(–12) dm, glandular-verrucose distally.

(0.5–)1–3.5 dm, nearly eglandular.

spikes, relatively densely flowered, not involucrate, 13–16 mm diam.;

axis usually not visible, (1.5–)2–8 cm;

bracts deciduous by anthesis, (3–)4–8 mm.

spikes, densely to loosely flowered, not involucrate, 7–13(–15) mm diam.;

axis not to partially visible, 0.5–4(–5) cm;

bracts deciduous at anthesis or later, 2.5–5.5 mm.

(1–)2.5–14 cm.

0–3.5 cm.

8–10, (7.5–)8–11 mm, filaments distinct to 0.1–1.6 mm, anthers 0.4–0.5 mm.

10, (6–)6.4–10 mm, filaments distinct to 1.1–2.3 mm, anthers 0.4–0.7 mm.

white, sometimes banner purplish in age;

not conventionally papilionaceous;

banner 4.9–7.3 mm, blade lanceolate-oblong to oblong-elliptic, 3–4.8 × 2.2–2.3 mm; epistemonous petals attached near or proximal to middle of stamen tube, blades somewhat unequal, laterals (2–)3.4–5 × 1–1.8 mm, abaxials 3–3.7 × 1.1–1.6 mm.

clear yellow, purplish or brownish in age; papilionaceous;

banner (4–)4.4–5.5 mm, blade suborbiculate-cordate to reniform, 1.5–3.2 × (1.5–)2–3.6 mm; epistemonous petals attached near or distal to middle of stamen tube;

wings 2.1–3.7 × 0.9–1.8 mm;

keel connate valvately, blades 2.9–4.8 × 1.6–2.8 mm.

asymmetric, recessed opposite banner, 4.8–7 mm, glabrous;

tube (2.5–)2.7–3.8 mm, with 2–4(–8) large glands between ribs, lobes triangular-aristate.

subsymmetric, 4.5–6.5(–7.5) mm, densely pilose;

tube 1.9–2.7 mm, with 3 or 4 small glands between ribs, lobes triangular-aristate, becoming plumose.

2.2–2.8 mm, pilosulous distally and dotted with small glands.

2.5–3 mm, distally with 2 rows of ascending hairs on either side of a glabrescent row, eglandular.

1.6–1.8(–2) mm.

1.8–2.2 mm.

herbs, erect, glabrous proximal to inflorescences.

leaves 3–10 cm;

leaflets 19–37, blades oblong-elliptic to oblanceolate, 2–9 mm.

leaves 1–2.5(–3) cm;

leaflets (3 or)5(or 7), blades obovate to olanceolate, 3–15 mm, surfaces inconspicuously glandular-punctate abaxially.

herbs, prostrate, diffusely spreading, or erect, silky-pilosulous.

= 14 (Mexico).