Great Basin fishhook cactus, Sclerocactus pubispinus, Nevada, Snake Range, Black Horse Canyon, Snake Valley drainage, elevation 2090 m (6850 ft).This is the only yellow-flowered Sclerocactus I am aware of. The species is found in a narrow band straddling the central Nevada-Utah border.Jumped ahead in 2016 to post these photographs from a May 8-11 expedition to document rare Nevada cacti for ongoing research projects. The rest of 2016 is up next!