These are Opuntias that are cold-hardy to USDA climate zone 7a or colder, especially if they are from high altitudes. Some (e.g., O. polyacantha) can be exceptionally cold hardy.
Introduction Opuntia sp nova aff camanchica is an undescribed prickly pear cactus that occurs in the area of greater Albuquerque, New Mexico, including adjacent portions of Cibola National Forest. It may be found from 1650 m to 2000 m, but its altitudinal range may be greater. Similarly, it may extend much beyond the Albuquerque area, […]
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(Anthony) Ferguson, Cactus and Succulent Journal (U.S.) 58(3): 124, 1986 Holotype; Isotype; Herbarium; Herbarium; Herbarium Original Description What is Opuntia chisosensis? Opuntia chisosensis is a prickly pear cactus that grows in the Big Bend region of Texas and adjacent Mexico where it occurs at higher elevations in wooded areas. At one time it was considered
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Rafinesque, Bulletin Botanique 2: 216, 1830 Neotype; Herbarium; Herbarium; Herbarium; Herbarium (as O. humifusa); Herbarium (with O. nemoralis); Herbarium (as humifusa); Herbarium (as humifusa); Herbarium (as O. humifusa); Herbarium; Herbarium; Herbarium (as O. humifusa); Herbarium See O. humifusa See O. lata See O. mesacantha Original Description What is Opuntia cespitosa? Opuntia cespitosa is a member of the Opuntia humifusa group (O. humifusa s.l.) and
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Griffiths, Bulletin of the Torrey Botanical Club 43: 86, 1916 Holotype; Isotype; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium Original Description. What is Opuntia zuniensis? Opuntia zuniensis is a handsome, prickly pear cactus found in Arizona, New Mexico, southern Utah, far western Texas, and perhaps southwestern Colorado. It has been confused with O. phaeacantha, O. tortispina, or
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Griffiths, Proceedings of the Biological Society of Washington 27: 24, 1914 Holotype; Isotype; Herbarium; Herbarium; Herbarium; Herbarium (aff O. valida); Herbarium (aff O. valida); Herbarium (aff O. valida); Herbarium (aff O. valida) Original Description What is Opuntia valida? Opuntia valida is a handsome prickly pear cactus found in New Mexico, West Texas, and perhaps Arizona.
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Introduction This undescribed prickly pear cactus occurs in northern New Mexico and perhaps into Colorado. It has similarities with Opuntia macrorhiza. However, the flowers have no red in them and the stigma is bright green. More studies are needed.
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(Engelmann & J. M. Bigelow) Britton & Rose, Smithsonian Miscellaneous Collections 50: 535, 1908 Lectotype (O. missouriensis trichophora); Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Drawing (The Botany of the Expedition, 1856, plate XV No. 1-4 [O. missouriensis trichophora]) Opuntia trichophora is possibly related to O. arenaria O. trichophora is related to O. diploursina O. trichophora is related to O. polyacantha Original Citation What is
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Griffiths, Bulletin of the Torrey Botanical Club 43(2): 90, 1916 Isotype; Herbarium; Herbarium; Herbarium; Herbarium (O. griffithsiana); Herbarium (O. griffithsiana); Herbarium (O. reflexa); Herbarium (O. convexa); Painting; Painting (O. convexa) Original Description What is Opuntia pyrocarpa? Opuntia pyrocarpa is a commonly encountered prickly pear cactus in south-central to north-central Texas, where it often grows in
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Haworth, Supplementum Plantarum Succulentarum 82, 1819 Original Description What is Opuntia polyacantha? Opuntia polyacantha is a variable prickly pear cactus ranging from Mexico near California, to Texas, to the Rocky Mountain states, the Great Plains, and north into Alberta and Saskatchewan. In 2018, a disjunct population was discovered in the Thousand Islands region of Ontario, Canada. This
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Parfitt, Rhodora 99(899): 223, 1997 Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium Original Description What is Opuntia pinkavae? Opuntia pinkavae is a small prickly pear cactus. Long before the publication of the name, pinkavae, this Opuntia was distributed under the name O. kaibabensis. However, that name was never officially published. It is a
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