Pediomelum hypogaeum (also known as Psoralea hypogaea) is a perennial herb also known as the little Indian breadroot or subterranean Indian breadroot.

It is found on the black soil prairies in Texas.

It has an inflorescence on stems 5-6 centimeters long, separate from the leaves, arising from a subterranean stem and deep carrot-shaped root that is 3–7 cm long.

The flowers, borne in condensed spikes separate from the leaves, are purple and pea-like, and have a surprisingly strong scent, reminiscent of lemon furniture polish.

The species has edible tuberous roots, high in protein.