The Bishop’s Cap Cactus is a spineless cactus usually comprised of 5 ribs, although it can be anywhere from 3-7 ribs, which form a starlike globular shape. Down the center of each rib grows flocked trichomes, generally brown or white in color. More ribs may grow as it ages, it can grow up to three feet long. The flowers are generally pale yellow followed by a red fruit. [Read more…]