Exhibit Item 47
Echinocereus leucanthus
Current classification: Wilcoxia albiflora
Illustrator: Lucretia B. Hamilton
Pen and Ink
From the Richard Felger Collection at the
University of Arizona Herbarium
Top: Arching stem with buds and flowers, enlargements of
areola spine cluster, single spine, flower, vertical section
of flower
Center: Lower section of stem and roots
Bottom: Enlargements of seed, cross-section of fruit, fruit
Echinocereus leucanthus is a rare, unique, cryptic cactus that can be difficult to find. It is known only from a few costal localities in southern Sonora and northwestern Sinaloa. Much of the potential habitat has been converted into agriculture or severely altered by woodcutting.