The echinocactus whipplei cactus grows three to five inches tall. The flower is greenish red. It is native to northern Arizona.
L. H. Bailey Standard Cyclopedia of Horticulture (New York, New York: The MacMillan Company, 1917)
1579×2400, 1.6 MiB
673×1024, 155.4 KiB
421×640, 73.2 KiB
210×320, 22.4 KiB