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Pediocactus simpsonii (Engelm.) Britt. & RoseJuly 22, 2002, Boulder Mountain, Garfield County, Utah, approx. 8600 ft. Plants are usually solitary but can clump or produce offsets, or even produce cristate forms.
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Pediocactus simpsonii in flower at the University of Utah cactus garden.While varieties are not currently accepted, this plant would fall into var. minor which can have flowers range from almost white to pale yellow/pink/orange and has flowers that are larger and more spreading and stems that are less spiny and lower/smaller than var. simpsonii.April 26 (or possibly slightly later that month) in 1982, University of Utah campus, Salt Lake City, Utah
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Pediocactus despainii Welsh & Goodrich. A rare, Utah endemic species occurring principally only in Emery County that is federally listed under the Endangered Species Act. This plant in cultivation in northern Utah was grown by a third-party from seeds that were purportedly legally collected.The bronze coloration (in flowers ranging from yellow to peach or pink) in part distinguish it from the related and also rare and also federally listed P. winkleri. April 24, 2007, Salt Lake County, Utah
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Pediocactus sileri aka Gypsum cactus in habitat. Listed as endangered under the Endangered Species Act on Nov. 26, 1979. Reclassified to threatened on Dec. 27, 1993. Continues to be of high conservation concern. Restricted endemic along the Utah-Arizona border. Growing here with thick and extensive biological soil crusts.May 25, 1986, Washington County, Utah
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Pediocactus simpsonii (Engelm.) Britt. & RoseJuly 22, 2002, Boulder Mountain, Garfield County, Utah, approx. 8600 ft.Note fruit capsules.
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Pediocactus simpsonii (Engelm.) Britt. & Rose. in flower in a planted cactus garden on the south side of the old Biology building on the University of Utah campus. The garden was planned and planted by Dorde Woodruff. The garden is still there but is occupied by mainy prickly pear species: the "barrel" types which included this Pediocactus species as well as at least two different species of Echinocereus and our one native Neolloydia (now Echinomastus) species were ultimately all stolen.While generally scattered throughout the state in usually midmontane and higher elevation ranges, P. simpsonii is something of an enigma in terms of its distribution in the northern half of the state, a region that is generally quite mountainous where "Mountain cactus" (a common name for this species) mostly tends to occur. While it is present in the Uinta Basin and in the northwestern corner of Box Elder County, it is otherwise absent from Utah Lake (so most of Utah County) northward along the Wasatch Front to the Idaho state line. So it is unknown from (south to north) the upper roughly 2/3rds of Utah (a large and highly irregularly shaped county), Salt Lake, Summit, Davis, Morgan, Weber, Rich and Cache Cos. It is also only sparsely present in the western Utah, and in some cases mostly or completely missing from some counties. So while it is our most common and sometimes "abundant" species of Pediocactus, it can't just be found anywhere.While varieties are not currently accepted, this plant would fall into var. minor restricted to the eastern portion of the state which can have flowers range from almost white to pale yellow/pink/orange and has flowers that are larger and more spreading and stems that are less spiny and lower/smaller than var. simpsonii.April 23, 1982, University of Utah campus, cactus garden south of the old Biology building, Salt Lake City, Utah
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Pediocactus despainii Welsh & Goodrich. A rare, Utah endemic species occurring principally only in Emery County that is federally listed under the endangered Species Act. This plant in cultivation in northern Utah was grown by a third-party from seeds that were purportedly legally collected.The plant has produced this many buds before, but they haven't all opened at the same time as they did this year (all four of these flowers are from the same solitary, small stem).The bronze coloration (in flowers ranging from yellow to peach or pink) in part distinguish it from the related and also rare and also federally listed P. winkleri. April 22, 2012, Salt Lake County, Utah
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Pediocactus despainii Welsh & Goodrich. A rare, Utah endemic species occurring principally only in Emery County that is federally listed under the Endangered Species Act. This plant in cultivation in northern Utah was grown by a third-party from seeds that were purportedly legally collected.The bronze coloration (in flowers ranging from yellow to peach or pink) in part distinguish it from the related and also rare and also federally listed P. winkleri. The areole hairs are also not lanate. April 24, 2007, Salt Lake County, Utah
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