Also within the range of variation of this species are degrees of toothiness. Most have very fine teeth like the edge of a serrated knife. At the opposite extreme is this selection here named in print for the first time. The name ‘Moto Sierra’ is Spanish for chainsaw. Rooted offsets of HBG 104723, from tissue-culture. $10.
Published in the Cactus and Succulent Journal, Vol. 83 (2), March - April, 2011