This is probably Astragalus megacarpus, growing in bentonite clay near the Rattlesnake Arches.
Ahh, another plant whose name sounds like an internal organ disease.
This plant has a chance of being a different species: namely a wierd A. ceramicus ssp or A. whitneyi. Or yet another one.
Tonight I have the great pleasure of hosting Panayoti and Jan while he gives a couple lectures in town. This evening's hardy cactus program was well recieved and much enjoyed by the local Chinle Chapter of the Cactus and Succulent Society.