Abstract
In the spring of 1939 and 1940 Dr. Fred A. Barkley collected some unusual cacti in southwestern Utah in the vicinity of the Desert Experimental Range west of Milford. These cacti were locally known as Opuntia fragilis. Dr. Barkley called the author's attention to them and at the same time further collections were made by Drs. Selar Hutchings and Gordon Marsh of the U.S. Desert Experimental Range Staff.
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