This has queer-looking flowers and is conspicuous on that account. The branching stems are a foot or more tall, the stipules are large, with papery margins, and the leaves are bright green, with a paler spot near the middle of each of the leaflets, which are toothed, or sometimes only bristly on the edges, and the flowers form a head about an inch and a quarter across, with a broad involucre. The calyx is very small and the corolla is cream-color, becoming much inflated and changing to deep pink as the flower withers. The effect of the cluster is curiously puffy and odd in color. This grows rankly in low alkaline and brackish places.
There are many kinds of Psoralea, widely distributed; ours are perennial herbs, without tendrils, the leaves with three or five leaflets, with glandular dots on them and usually bad-smelling. The flowers are white or purplish, and the pod is short, with only one seed.
SourClover Trifolium fucatum.