Opuntia caesia

Griffiths, Proceedings of the Biological Society of Washington 29(3): 13–14, 1916 Isotype; Herbarium; Herbarium; Herbarium What is Opuntia caesia? Opuntia caesia is a prickly pear cactus that is larger than O. phaeacantha. It may reach 2 m across and be about 60-70 cm tall with erect branches that rise from spreading, sprawling branches. Details Cladodes on … Read moreOpuntia caesia

Opuntia tardospina

Griffiths, Annual Report of the Missouri Botanical Garden 22: 34, 1911 Photograph (top photo, Britton and Rose, 1919, v1); Photograph (Britton and Rose, 1919, v1) Details Opuntia tardospina is a large prickly pear cactus first reported from the Lampasas, TX region. Griffiths reported that this Opuntia was an unusual cactus for several reasons. The glochids are numerous and … Read moreOpuntia tardospina

Opuntia chlorotica gosseliniana

(Weber) Ferguson, Cactus and Succulent Journal (U.S.) 60: 159, 1988 Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium What is Opuntia chlorotica gosseliniana? O. chlorotica gosseliniana is one of three varieties: chlorotica, santa-rita, and gosseliniana within the O. chlorotica complex as described by Ferguson (1988).  Details These prickly pear cacti may reach 1 m … Read moreOpuntia chlorotica gosseliniana

Opuntia chlorotica santa-rita

Griffiths & Hare, New Mexico Agricultural Experiment Station Bulletin 60: 64, 1906 Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium What is Opuntia chlorotica santa-rita Opuntia chlorotica santa-rita is one of three varieties of Opuntia chlorotica. The varieties are santa-rita, gosseliniana, and chlorotica (Ferguson 1988).  Details O. chlorotica santa-rita is an upright, open-branching OpuntiaRead moreOpuntia chlorotica santa-rita

Opuntia sp nova aff macrocentra

Introduction This unidentified Opuntia  was observed growing in southern New Mexico, near El Paso, TX, and in adjacent Mexico. This cactus grows with O. macrocentra and is similar to O. macrocentra, but it is more upright, has a different bloom period, and is a slightly taller prickly pear. These opuntias have a gray-blue color, and the spines are pale … Read moreOpuntia sp nova aff macrocentra

Opuntia macrocentra

Engelmann, Proceedings of the American Academy of Arts and Sciences 3: 292, 1856 [1857] Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; (O. macrocentra minor) What is Opuntia macrocentra? Opuntia macrocentra is a much-grown and much-enjoyed prickly pear cactus found in western gardens. It is related to O. azurea.  Details From Powell and Weedin: … Read moreOpuntia macrocentra

Opuntia confusa

Griffiths, Proceedings of the Biological Society of Washington 27(6): 28, 1914 Holotype; Isotype; Isotype; Isotype; Isotype See O. dulcis What is Opuntia confusa? Opuntia confusa is an interesting prickly pear because some cladodes have spination similar to that of O. engelmannii, whereas other cladodes have spination similar to that of O. dulcis.  Details In some of … Read moreOpuntia confusa

Opuntia cacanapa (incl O. ellisiana)

Griffiths & Hare, New Mexico Agricultural Experiment Station Bulletin (New Mexico College of Agriculture and Mechanic Arts) 60: 47, 1906 Isotype; Holotype (O. cacanapa ‘Ellisiana’); Neotype O. alta is another arborescent Opuntia What is Opuntia cacanapa? Opuntia cacanapa is a large prickly pear cactus that occurs in Brewster County, TX and southeast to the Gulf Coast as … Read moreOpuntia cacanapa (incl O. ellisiana)

Opuntia basilaris

Engelmann & Bigelow, Proceedings of the American Academy of Arts and Sciences 3: 298, 1856   Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Holotype (O. basilaris brachyclada); Herbarium (O.  basilaris brachyclada); Herbarium (O. basilaris brachyclada); Herbarium (O. basilaris brachyclada); Herbarium (O. basilaris longiareolata); Herbarium (O. basilaris longiareolata) Herbarium (O. basilaris longiareolata); Herbarium (O. basilaris longiareolata); Isolectotype (O. basilaris ramosa); Herbarium (O. basilaris heilii) What … Read moreOpuntia basilaris

Opuntia azurea

Rose, Contributions from the U.S. National Herbarium 12(7): 291, 1909 Holotype; Isotype; Herbarium; Herbarium; Herbarium; Herbarium (O. azurea parva); Herbarium (O. azurea diplopurpurea); Herbarium (Opuntia azurea discolor); Holotype (O. azurea diplopurpurea); Painting (unpublished) See O. chisosensis See O. macrocentra What is Opuntia azurea? Opuntia azurea is an attractive prickly pear cactus from the Big Bend Region of Texas that is related … Read moreOpuntia azurea