UNIVERSITY OF ARIZONA HERBARIUM
BOTANICAL ILLUSTRATION COLLECTION
-- WORKS BY LUCRETIA BREAZEALE HAMILTON --

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Exhibit Item 42

Grusonia reflexispina plant Grusonia reflexispina roots

Click Each Image to Enlarge

Opuntia reflexispina
Current classification: Grusonia reflexispina

Illustrator: Lucretia B. Hamilton
Pen and Ink

From the Richard Felger Collection at the
University of Arizona Herbarium

Left:  Habit and enlargements of root, seed, spines, cross-section of fruit

Right:   Roots of mature plant

Grusonia reflexispina is a rare club cholla, a low growing densely clustered cholla, known only from one locality near the shore in west-central Sonora, Mexico. Much of its potential habitat has long been converted into farmland. This species is highly vulnerable to extinction.