It is endemic to California, where it grows in both coastal and inland areas such as the Central Valley, especially in moist places.

The leaves are up to 9 cm (3.5 in) in length and made up of several lance-shaped to oval leaflets.

The fruit is a narrow legume pod up to 5 cm (2.0 in) long and usually containing two smooth seeds.

titi, is a rare plant treated as an endangered species on the federal level.

It is probably now limited to coastal Monterey County, having been extirpated from its previous range in southern California.