Morphological characteristics of lupine

Annual herb, 20-70 cm tall. The stems are ascending or erect, branched at the base, and the whole plant is covered with brown or rusty bristles.

Palmately compound leaves with 5-8 leaflets; Petiole is much longer than lobule; Stipules are subulate, 65438 0 cm long, and the lower part is connected with petiole; Leaflets are obovate, oblanceolate to spatulate, 15-70 mm long and 5- 15 mm wide, with blunt or sharp tips, short tips, tapering bases and bristles on both sides.

The raceme is terminal, short, 5- 12 cm long, not longer than compound leaves, with slender inflorescence axis, alternate flowers below and irregular whorls above, with the length of10-14 mm; Bracts subulate, 3-4 mm long, hairy; Pedicel is very short, 1-2 mm long; Calyx is 2-lipped, with long bristles, the lower lip is longer than the upper lip, the lower lip has 3 deep lobes, and the upper lip is shallow, which persists in fruit; Corolla blue, flag flap and dragon bone flap with white stripes. The fruit sequence axis is thickened, and the length is still less than that of compound leaves; Pods are oblong, linear, 2.5-5 cm long and 0.8- 1.2 cm wide, densely covered with brown bristles, with short beaks pointing downward,

Interspecific nodes are pod-shaped; There are 3-4 seeds. Seeds ovoid, flat, yellow, with brown or red stripes, smooth. The flowering period is from March to May, and the fruiting period is from April to July.