Euphorbiaceae, Jatropha cuneata, matacora, leatherplant, limberbush
The tree is small, stout, multi trunked. I didn’t see any growing much taller then seven feet. Up on ridges they were much more dwarfed, growing larger in arroyos. Unfortunately, somehow I didn’t get a photo of the leaves, but in at least one of these photos you can get a glimpse.
The peeled and pounded stems of J. cuneata were used by the Cora and Seri Indians to make baskets, The bark was used for dyeing and tanning.