Inflorescence at first an ovoid head exceeded by the upper leaves, elongating to 10 cm in fruit; bracts large and very conspicuous but soon falling, up to 20 × 13 mm, ovate to obovate and tapered gradually to a long-acute apex, shortly and closely appressed brown pubescent; pedicels 7–12 mm long (to 18 mm in fruit), appressed-pubescent.
Calyx 9–13 mm long, the teeth longer than the campanulate part, the two upper teeth joined for most of their length to form a broad triangle with only the terminal 1–2 mm free; the whole shortly and rather thinly appressed-pubescent.
Petals 20–27 mm long, purple; standard as broad as long, broadly rounded to emarginate at the apex, ± truncate at the base; lower margin of keel curved through c.90°.
Pods 7–8.5 × 0.6–0.8 cm, the sutures somewhat broadened, surfaces closely appressed dark brown pubescent.
Young branches shortly and closely appressed golden-brown pubescent.
Ovary shortly appressed-pubescent; style pubescent.
Stamen tube 15–18 mm long.
Shrub up to 3(5) m high.
Seeds c.8.