Biennial herbs, sparsely puberulent to glabrescent. Stems erect, 40-100(-250) cm, longitudinally ridged. Stipules linear-falcate, 3-5(-7) mm, entire or with 1 tooth at base; petiole slender; leaflets obovate, broadly ovate, oblanceolate, to linear, 15-25(-30) × 5-15 mm, lateral veins running into teeth, 8-12 pairs, margins shallowly serrate. Racemes 6-15(-20) mm, 30-70-flowered, dense at first, becoming lax in anthesis; bracts equal to pedicels, 1.5-2 mm. Corolla yellow, 4.5-7 mm; standard ± equal to wings and keel. Ovary narrowly ovate; ovules (4-)6(-8). Legume ovoid, 3-5 × ca. 2 mm, veins transversely reticulate, dark brown, apex with persistent style. Seeds 1 or 2, yellowish brown, ovoid, ca. 2.5 mm, smooth. Fl. May-Sep, fr. Jun-Oct.
"Ascending or erect, taprooted biennial (annual) 0.5–1.5(–2) m; lfls oblanceolate to obovate, 1–2.5 cm; racemes 5–15 cm (peduncle included); pedicels 1.5–2 mm,decurved; fls yellow, 4.5–7 mm, the wings about as long as the banner; cal-teeth narrowly lanceolate, subulate; ovules 4–7; fr glabrous, 3–5 mm, strongly cross-ribbed; seeds usually 1 or 2; 2n=16. Native of Eurasia, established as a weed of waste places throughout our range, w. to the Pacific, not common southward. Summer."