Flora of North America species comparison

erect, to 80 cm, glabrous or strigulose.

to 75 cm, glabrous or pilose.

stipules to 15 mm, epunctate, glabrous;

petiole 2/3 to as long as leaflets, glabrous or sparsely hairy;

leaflets 4, blades linear to narrowly elliptic, 25 × 8 mm, ± similar throughout or distal-most smaller, base cuneate, apex acute, surfaces epunctate, glabrous, abaxial midvein strigose.

stipules 4–11 mm, punctate or epunctate, glabrous or villous;

petiole 1/2 to as long as leaflets, glabrous or pilose;

leaflets 2, blades broadly lanceolate to ovate-lanceolate proximally, or lanceolate to linear distally, 24 × 12 mm proximally, 30 × 5–7(–13) mm distally, base cuneate or rounded proximally, or cuneate distally, apex acute proximally or acute to acuminate distally, surfaces punctate or epunctate, glabrous or strigose to villous.

1–10-flowered, crowded or ± lax, 2–17 cm;

bracts 5–7-veined, lanceolate-ovate to ovate, 10 × 7 mm, apex acute, surfaces epunctate, glabrous;

auricles 1–2.2 mm.

(2–)5–15-flowered, usually crowded, to 10 cm;

bracts 5–9-veined, lanceolate to lanceolate-ovate, 12(–14) × 8 mm, apex acute to acuminate, surfaces punctate or epunctate, glabrous or villous;

auricles frequently notched basally, often falcate, to 3.5 mm.

calyx tube 7–10-veined, 3–4 mm, ± strigose;

corolla yellow;

banner 10–14 mm, longer than wings.

calyx tube 7–10-veined, to 4 mm, strigose distally;

corolla yellow or orange-yellow;

banner 13–15 mm, longer than wings and keel.

1.5–1.8 mm.

1.1–1.4 mm.

exserted beyond bracts;

segments 2–6, 2.7–3.5 × 2.5–3.3 mm, not reticulate, eglandular, glabrous;

bristles to 1 mm.

concealed by bracts or distalmost segment exserted;

segments usually 4–7 segments concealed by bracts, sometimes with 1 or 2 segments exserted beyond bracts, 2–2.4 × 1.9–2.2 mm, reticulate, eglandular, pilose to villosulous;

bristles 0.2–0.4(–1) mm.

= 20.