Difference between revisions of "Pediocactus simpsonii"
in N. L. Britton and A. Brown, Ill. Fl. N. U.S. ed. 2, 2: 570. 1913.
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|name=Echinocactus simpsonii | |name=Echinocactus simpsonii | ||
|authority=Engelmann | |authority=Engelmann | ||
| + | |rank=species | ||
|publication_title=Trans. Acad. Sci. St. Louis | |publication_title=Trans. Acad. Sci. St. Louis | ||
|publication_place=2: 197. 1863 (as simpsoni) | |publication_place=2: 197. 1863 (as simpsoni) | ||
| Line 17: | Line 18: | ||
|name=Echinocactus simpsonii var. minor | |name=Echinocactus simpsonii var. minor | ||
|authority=Engelmann | |authority=Engelmann | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Echinocactus simpsonii var. robustior | |name=Echinocactus simpsonii var. robustior | ||
|authority=J. M. Coulter | |authority=J. M. Coulter | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Mammillaria simpsonii | |name=Mammillaria simpsonii | ||
| − | |authority= | + | |authority= |
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Pediocactus simpsonii subsp. bensonii | |name=Pediocactus simpsonii subsp. bensonii | ||
|authority=(Engelmann) Hochstätter | |authority=(Engelmann) Hochstätter | ||
| + | |rank=subspecies | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Pediocactus simpsonii var. hermannii | |name=Pediocactus simpsonii var. hermannii | ||
|authority=(W. T. Marshall) W. T. Marshall | |authority=(W. T. Marshall) W. T. Marshall | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Pediocactus simpsonii subsp. idahoensis | |name=Pediocactus simpsonii subsp. idahoensis | ||
|authority=Hochstätter | |authority=Hochstätter | ||
| + | |rank=subspecies | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Pediocactus simpsonii var. indraianus | |name=Pediocactus simpsonii var. indraianus | ||
|authority=Hochstätter | |authority=Hochstätter | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Pediocactus simpsonii subsp. robustior | |name=Pediocactus simpsonii subsp. robustior | ||
|authority=(J. M. Coulter) Hochstätter | |authority=(J. M. Coulter) Hochstätter | ||
| + | |rank=subspecies | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Pediocactus simpsonii var. robustior | |name=Pediocactus simpsonii var. robustior | ||
|authority=(Engelmann) L. D. Benson | |authority=(Engelmann) L. D. Benson | ||
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Cactaceae;Cactaceae subfam. Cactoideae;Pediocactus;Pediocactus simpsonii | |hierarchy=Cactaceae;Cactaceae subfam. Cactoideae;Pediocactus;Pediocactus simpsonii | ||
| Line 65: | Line 75: | ||
-->{{#Taxon: | -->{{#Taxon: | ||
name=Pediocactus simpsonii | name=Pediocactus simpsonii | ||
| − | |||
|authority=(Engelmann) Britton & Rose in N. L. Britton and A. Brown | |authority=(Engelmann) Britton & Rose in N. L. Britton and A. Brown | ||
|rank=species | |rank=species | ||
| Line 80: | Line 89: | ||
|publication year=1913 | |publication year=1913 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V4/V4_401.xml |
|subfamily=Cactaceae subfam. Cactoideae | |subfamily=Cactaceae subfam. Cactoideae | ||
|genus=Pediocactus | |genus=Pediocactus | ||
Revision as of 21:40, 16 December 2019
Plants only occasionally branched. Stems depressed-ovoid to ovoid or globose, 2.5–15(–25) × 2.5–15 cm; areoles circular to oval, villous. Spines smooth, relatively hard, distinguishable as radial and central; radial spines 15–35 per areole, widely spreading, white, slender, 3–13 mm; central spines 4–11 per areole, reddish brown (rarely black) with basal 1/2 cream or yellow, rigid, straight or slightly curved, 5–21 × 0.3 mm. Flowers 1.2–3 × 1–2.5 cm; scales and outer tepals minutely toothed and laciniate or entire and often undulate; outer tepals with greenish brown midstripes, oblong-cuneate, 9–20 × 3–5(–6) mm; inner tepals white, pink, magenta, yellow, or yellow-green, 12–25 × 4.5–6(–9) mm. Fruits green tinged with red, drying reddish brown, short cylindric, 6–11 × 5–10 mm. Seeds gray to black, 2–3 × 1.5–2 mm, papillate but not rugose.
Phenology: Flowering spring–early summer.
Habitat: Pinyon-juniper woodlands, sagebrush, montane, and prairie grasslands, coniferous forests
Elevation: 1400-3500 m
Distribution
Ariz., Colo., Idaho, Mont., Nev., N.Mex., S.Dak., Utah, Wyo.
Discussion
Pediocactus simpsonii is an exceedingly variable species. The segregation of the many forms, varieties, and subspecies on the basis of morphology, however, is difficult to support, given the continuous range of variation in stem size and flower color over its geographic range. The species has the widest distribution of any Pediocactus, and is found at the highest elevation.
Selected References
None.