PlantFiles Pictures: Siler's Pincushion Cactus, Gypsum Cactus, Gypsum Plains Cactus (Pediocactus sile, 3 by CactusJordi

CactusJordi wrote:
Marc is right. It certainly is not the best picture (2004) due to low resolution... but that is Utahia/Pediocactus sileri!! (not Sclerocactus sileri from the other side of Kaibab Plateau).
The location is near Fredonia and amongst the plants I visit there every now and then are usually a few with offsets.
1st photo taken in 2008, 2nd + 3rd taken in 2011. 4th photo is a grafted seedling.

Hope that helps.

Jordi