Scientific Name | Pediocactus simpsonii | USDA PLANTS Symbol | PESI |
Common Name | Mountain Cactus, Simpson Hedgehog Cactus | ITIS Taxonomic Serial No. | 19776 |
Family | Cactaceae (Cactus) | SEINet Reference |
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Description |
Life zones and habitat: Foothills and montane (5200 to 10500 ft.); dry soils on rocky hillsides. Plant: Small, often solitary cactus plants with spherical or ovoid stems that may be flattened or depressed; 1 to 6 inches across. Pads & Spines: No pads; stems are green with short conical tubercules, almost obscured by spines, each with an areole at the top; 15 to 35 white widely spreading radial spines, 0.1 to 0.5-inch long; 4 to 11 central spines per areole, reddish brown with lower half cream or yellow, 0.2 to 0.8 inches long. Inflorescence: Flowers are up to 1 inch across with usually pink tepals, but may be white, cream, yellow or magenta; stamens are yellow and stigma lobes green. Bloom Period: April to June. Fruit: Short cylindrical, green tinged with red or turning reddish-brown, less than 1/2-inch long. References: "Flora of Colorado" by Jennifer Ackerfield, iNaturalist and SEINet. Note: Pediocactus simpsonii has adapted to survive in cold and dry environments and can be found at higher elevations than any other cactus in North America. |
BONAP Distribution Map Map Color Key |
Colorado Status: Native |
© Tom Lebsack 2024
Banner photo: Castilleja rhexifolia and a brewing storm over the San Juan Mountains