FOOTNOTES:
[39] Listed as shack c. in 1948 USDA Yearbook of Agriculture.
[40] The genus Dalea includes Petalostemum in some manuals.
[41] Often termed stemless loco in older literature but the name loco should be reserved for the genus Astragalus.
[42] The genus Petalostemum is included in Dalea in some manuals.