ISI 2006-3. Ferocactus alamosanus (B. & R.) B. & R.

Sometimes referred to as F. pottsii var. alamosanus, this rare and distinctive barrel cactus has depressed globose stems that are usually solitary but sometimes clump. The straw-colored spines are needle-like and densely intermeshed and have a reddish tinge in the new growth. Known only from a restricted area E of Alamos, Sonora, Mexico. HBG 93974. $5.

spination detail

Photo © 2006 by John N. Trager. Images may not be used elsewhere without permission.

Published in the Cactus and Succulent Journal, Vol. 78 (2), March - April, 2006