The currently accepted scientific name of little breadroot is Psoralea hypogaea Nutt. Howard, Janet L. 1993. It is acaulescent or rarely short-stemmed. The caudex is also usually located below ground.
Little breadroot grows in rocky or sandy soils.
Little breadroot probably survives fire because the caudex is located below ground. Presumably, starch reserves in the root are metabolized the growing season following fire, and plants sprout from the caudex. Fire probably helps stimulate germination of seedbank-stored little breadroot seeds by scarifying them. Fire probably top-kills little breadroot. Bare, Janet E. 1979.