Rare Plant Field Guide

Table of Contents Home Introduction Acknowledgments Definitions Master Plant List USFS List BLM List Other Agencies Glossary References Plant Survey Form HELP! NDIS Home CNHP Home

Photo Copyright © 1999 courtesy of the Colorado Natural Heritage Program Cactaceae (Cactus Family) Look Alikes: S. parviflorus has a hooked central spine and is larger than S. glaucus. Flowering/Fruiting Period: Flowers April-May. Plants are usually only visible when flowering. After blooming, the cactus may shrink below the ground or become a dull grayish-green color. Habitat: Rocky hills, mesa slopes, and alluvial benches; in desert shrub communities. Elev. 4500-6000 ft. Photo Copyright © 1999 by S. Spackman Distribution: Utah and Colorado (Delta, Garfield, Mesa and Montrose Cos.). References: O’Kane 1988; Peterson 1982; Scheck 1994. Please send comments to: Colorado Natural Heritage Program 254 General Services Building, Colorado State University · Fort Collins, CO 80523 · (970) 491-2992