Flora of North America species comparison

herbaceous, ascending, spreading, prostrate, or matted, often much branched, to 10 dm, often with line of fine pubescence on one side, occasionally sericeous.

stipular sheath 3–11-veined, sericeous or glabrous, teeth of distal stipules mostly shorter than sheath;

petiole 2–6 mm;

leaflet blades lanceolate to elliptic, 150–200 × 40–60 mm, veins 3–6 pairs, base cuneate, margins entire, apex obtuse to subacute, surfaces glabrous or short-pilose abaxially.

3–15-flowered, ovoid to oblong, to 2 cm, axis rudiment present, to 7 mm;

outer bracts 3-foliolate, inner bracts 1-foliolate, 5–7-veined, sheath pubescent;

outer bracteole 1–5 mm, apex ciliate;

inner bracteoles 2, 2–3.5 mm, apex ciliate.

calyx tube 4–7.5 mm, lobes ± acute;

corolla yellow;

banner suborbiculate, 4–5 mm;

wings 3.5–4.5 mm;

keel 3–4.5 mm.

1–2 mm.

reticulate, 1.8–2.2 mm wide;

fertile segments (1 or)2;

proximal segment (when fertile) 1.5–3.5 mm;

distal segment 2–4 mm, glabrous or puberulent;

beak hooked, 2–4.5 mm, equaling to surpassing distal segment, shortly pubescent or glabrous.

= 20, 40.