Bumelia lanuginosa Pers. Sapotaceae. False Buckthorn.
North America. This is a low bush of southern United States which, according to Nuttall, bears an edible fruit as large as a small date.
Bumelia reclinata Vent. Western Buckthorn.
Southwestern United States. In California, Torrey says the fruit is sweet and edible and nearly three-quarters of an inch long.