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 This Opuntia has been observed growing in very rocky situations in central and north-central New Mexico. This prickly pear cactus resembles O. engelmannii but is a spinier and smaller cactus. Even gracile forms or shade-grown plants have a spinier appearance than O. engelmannii. Prickly pear cacti from different locations in New Mexico are depicted […]
Opuntia sp nova aff engelmannii Read More »
Engelmann, Boston Journal of Natural History 6: 206, 1850 Holotype; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium (O. macrorhiza-like); Herbarium; Herbarium Herbarium; Herbarium; Print (Britton and Rose, v1 1919, plate XXVIII); Print (Addisonia, 1916, plate 19); Print See O. cespitosa, a similar eastern plant O. pottsii can be mistaken for O. macrorhiza. Original Description
Opuntia macrorhiza, Prairie Pricklypear, Prarie Rose Read More »
Rose, Contributions from the U.S. National Herbarium 13: 310, 1911 Holotype; Isotype; Isotype; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium (as O. roseana); Herbarium (as O. roseana); Painting; Photograph; Photograph Original Citation What is Opuntia mackensenii? Opuntia mackensenii is a prickly pear cactus found in northern Texas and adjacent areas. Many specimens have tuberous roots. It can be mistaken as
Opuntia mackensenii, Mackensen’s Pricklypear Read More »
(Rafinesque) Rafinesque, Flora Medica (or Manual of the Medical Botany of the United States of North America) 2: 247, 1830 Neotype; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium (as O. calcicola); Herbarium (as Cactus humifusus); Herbarium (as Cactus opuntia) Drawing (Curtis’s Botanical Magazine, vol. 50: pl 2393, 1823 [as Cactus opuntia]); Drawing (Audubon, Birds of America [double elephant folio edition, plate
Opuntia humifusa, Eastern Pricklypear Read More »
Griffiths, Annual Report of the Missouri Botanical Garden 20: 87, 1909 Holotype (as O. gilvescens); Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium. Except where indicated, all specimens were originally interpreted as O. phaeacantha. O. gilvescens is related to O. camanchica O. gilvescens is related to O. phaeacantha Original Description What is
Opuntia gilvescens, Bajada Pricklypear Read More »
Salm-Dyck ex Pfeiffer, Enumeratio diagnostica cactearum hucusque cognitarum 156, 1837 Herbarium (as O. crinifera); Herbarium (seedling); Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Note: unless indicated otherwise, all herbarium specimens were submitted as O. engelmannii; Herbarium (O. dillei); Herbarium; (O. dillei); Painting Original Description What is Opuntia orbiculata? O. orbiculata is a large prickly pear cactus that
Opuntia orbiculata, Round-pad Pricklypear Read More »
Salm-Dyck ex Engelmann, Boston Journal of Natural History 6(2): 207, 1850 Lectotype; Isotype (of O. gregoriana); Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium (as O. gregoriana); Herbarium (as O. gregoriana) See O. lindheimeri See checklist of differences between O. lindheimeri and O. engelmannii Original Description What is
Opuntia engelmannii, Engelmann Pricklypear Read More »
Engelmann, Memoirs of the American Academy of Arts and Science n.s. 4(1): 51, 1849 Lectotype; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Painting O. phaeacantha shares similarities with O. camanchica O. phaeacantha shares similarities with O. gilvescens Original Description What is Opuntia phaeacantha? Opuntia phaeacantha is a common and
Opuntia phaeacantha, Tulip Pricklypear, Brown-spine Pricklypear Read More »
(Engelmann&J.M.Bigelow) Rose, Contributions from the United States National Herbarium 13(9): 309, 1911 Lectotype (deposited as O. engelmannii var cyclodes); Drawing (Bigelow, J.M., The Botany of the Expedition, 1856, plate VIII No. 1 [identified as O. engelmannii cyclodes]) Original Citation What is Opuntia cyclodes? Opuntia cyclodes is a little-studied yet visually appealing prickly pear cactus native to New Mexico. It has
Opuntia cyclodes, Anton Chico Pricklypear Read More »
Szutorisz, Kaktusz-Világ 26: 115, 2002 (Also see Szutorisz, Succulentes 4: 17, 2005) Original Description Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium See O. fragilis See O. polyacantha What is Opuntia debreczyi Opuntia debreczyi is a very low, cold-hardy prickly pear of the interior western United States, centered in the central Rockies and nearby plateaus.
Opuntia debreczyi, Potato Cactus Read More »
