blue

Opuntias known for their blue or blue-green color in gardens.

Opuntia caesia

Opuntia caesia, Bluish Pricklypear

Griffiths, Proceedings of the Biological Society of Washington 29(3): 13–14, 1916 Isotype; Herbarium; Herbarium; Herbarium. Original Citation  What is Opuntia caesia? Opuntia caesia is a pricklypear cactus that is larger than O. phaeacantha. It may reach 2-3 m across and be about 60-80 cm tall with erect branches that rise from spreading, sprawling branches. Details The […]

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Opuntia tardospina

Opuntia tardospina, Late-spine Pricklypear

Griffiths, Annual Report of the Missouri Botanical Garden 22: 34, 1911 Herbarium; Herbarium; Herbarium; Herbarium; Photograph (top photo); Photograph; Painting Original Description What is Opuntia tardospina? Opuntia tardospina is a large pricklypear cactus first reported from the Lampasas, Texas region. Griffiths reported that this Opuntia was an unusual cactus for several reasons, not the least

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Opuntia chlorotica gosseliniana, Sonoran Purple Pricklypear

(Weber) Ferguson, Cactus and Succulent Journal (U.S.) 60: 159, 1988 Isotype; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium Original Description What is Opuntia chlorotica gosseliniana? O. chlorotica gosseliniana is one of three varieties along with vars chlorotica and santa-rita within the O. chlorotica complex as described by Ferguson (1988). The three types blend into

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Opuntia chlorotica santa-rita

Opuntia chlorotica santa-rita, Santa-Rita Purple Pricklypear

Griffiths & Hare, New Mexico Agricultural Experiment Station Bulletin 60: 64, 1906 Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium Original Description What is Opuntia chlorotica santa-rita? Opuntia chlorotica santa-rita is one of three varieties of the pricklypear cactus in the Opuntia chlorotica complex. The varieties are santa-rita, gosseliniana, and chlorotica (Ferguson 1988), and

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Opuntia macrocentra

Opuntia macrocentra, Black-spine Pricklypear

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; Herbarium; Herbarium; Herbarium; Herbarium (as O. violaceae macrocentra); Herbarium (as O. violaceae macrocentra); Herbarium (O. macrocentra minor); Herbarium (O. macrocentra minor); Herbarium (O. macrocentra minor) Original Description What is Opuntia macrocentra? Opuntia macrocentra

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Opuntia confusa, Confusing Pricklypear

Griffiths, Proceedings of the Biological Society of Washington 27(6): 28, 1914 Holotype; Isotype; Isotype; Isotype; Isotype; Isotype; Herbarium; Herbarium See O. dulcis Original Description What is Opuntia confusa? Opuntia confusa is an interesting pricklypear because some cladodes have spination similar to that of O. engelmannii, whereas other cladodes have spination similar to that of O. dulcis

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Opuntia cacanapa (incl ‘Ellisiana’), Cacanapa/Ellisiana Pricklypear

Griffiths & Hare, New Mexico Agricultural Experiment Station Bulletin (New Mexico College of Agriculture and Mechanic Arts) 60: 47, 1906 Isotype; Neotype; Holotype (O. cacanapa ‘Ellisiana’); Isotype (O. cacanapa ‘Ellisiana’); Herbarium (O. cacanapa ‘Ellisiana’) O. alta is another large Opuntia Original Description What is Opuntia cacanapa? Opuntia cacanapa is a large pricklypear cactus that occurs in Brewster County, TX

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Opuntia basilaris ramosa

Opuntia basilaris, Beavertail Cactus

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 ramosa); Herbarium (O.

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Opuntia azurea

Opuntia azurea, Purple Pricklypear

Rose, Contributions from the U.S. National Herbarium 12(7): 291, 1909 Holotype; Isotype; Isotype; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium (O. azurea diplopurpurea); Holotype; (O. azurea diplopurpurea); Holotype (O. azurea discolor); Herbarium (O. azurea discolor); Herbarium (O. azurea parva); Herbarium (O. azurea parva); Herbarium (O. azurea parva); Herbarium (O. azurea parva); Painting (possible O. azurea) See O. chisosensis See O. macrocentra Original Description What

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