Opuntias known for their blue or blue-green color in gardens.
Griffiths, Proceedings of the Biological Society of Washington 29(3): 13–14, 1916 Isotype; Herbarium; Herbarium; Herbarium. Original Description What is Opuntia caesia? Opuntia caesia is a large, blue-green, strongly glaucous prickly-pear, typically bigger and woodier in aspect than O. phaeacantha. Colonies often span 2–3 m across and stand about 50–80 cm tall, with long, spreading basal axes and […]
Opuntia caesia, Bluish Pricklypear Read More »
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 prickly pear cactus first reported from the Lampasas, Texas region. Griffiths reported that this Opuntia was an unusual cactus for several reasons, not the
Opuntia tardospina, Late-spine Pricklypear Read More »
Image (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 var. gosseliniana? O. chlorotica var. gosseliniana is one of three recognized varieties in the O. chlorotica complex, together with var. chlorotica and var. santa-rita. The varieties intergrade
Opuntia chlorotica gosseliniana, Sonoran Purple Pricklypear Read More »
Opuntia chlorotica santa-rita Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium Original Description What is Opuntia chlorotica var. santa-rita? O. chlorotica var. santa-rita, the Santa-Rita purple prickly pear, is one of three varieties in the O. chlorotica complex—together with var. chlorotica and var. gosseliniana. It was clarified and united with O. chlorotica by Ferguson
Opuntia chlorotica santa-rita, Santa-Rita Purple Pricklypear Read More »
Introduction Different observers have recorded this unidentified Opuntia growing in southern New Mexico near Las Cruces, near El Paso, Texas, and in adjacent Mexico. This cactus may grow alongside O. macrocentra and is similar to O. macrocentra. But, this unidentified taxon is more upright, has a different bloom period, and is a taller prickly pear.
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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
Opuntia macrocentra, Black-spine Pricklypear Read More »
Opuntia confusa, Catalina Rd, Tucson, AZ Opuntia confusa, Confusing Pricklypear Holotype; Isotype; Isotype; Isotype; Isotype; Isotype; Herbarium; Herbarium Original Description What is Opuntia confusa? Opuntia confusa is notable for variable spination: some pads show heavier, angular, spreading spines reminiscent of O. engelmannii, while others bear slender spines, often one upright and one deflexed, as in
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Opuntia cacanapa 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 Texas Opuntia Original Description What is Opuntia cacanapa? A large, blue-green prickly pear forming
Opuntia cacanapa (incl ‘Ellisiana’), Cacanapa/Ellisiana Pricklypear Read More »
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); Isolectotype (O. basilaris ramosa); Holotype (O. basilaris ramosa); Herbarium (O. basilaris heilii); Herbarium (O. basilaris heilii); Herbarium (O.
Opuntia basilaris, Beavertail Cactus Read More »
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); O.
Opuntia azurea, Purple Pricklypear Read More »
