blue

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

Opuntia caesia

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 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 …

Opuntia caesia Read More »

Opuntia tardospina

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 Read More »

Opuntia chlorotica gosseliniana

(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 …

Opuntia chlorotica gosseliniana Read More »

Opuntia chlorotica santa-rita

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 prickly pear cactus,  Opuntia chlorotica. The varieties are santa-rita, gosseliniana, and chlorotica (Ferguson 1988). Santa-rita is the …

Opuntia chlorotica santa-rita Read More »

Opuntia sp nova aff macrocentra

Introduction This unidentified Opuntia was observed 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. These opuntias …

Opuntia sp nova aff macrocentra Read More »

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; 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 Read More »

Opuntia confusa

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 prickly pear because some cladodes have spination similar to that of O. engelmannii, whereas other cladodes have spination similar to that of O.

Opuntia confusa Read More »

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; Neotype; Holotype (O. cacanapa ‘Ellisiana’); Isotype (O. cacanapa ‘Ellisiana’); Herbarium (O. cacanapa ‘Ellisiana’) O. alta is another tree-type Opuntia Original Description What is Opuntia cacanapa? Opuntia cacanapa is a large prickly pear cactus that occurs in Brewster County, …

Opuntia cacanapa (incl O. ellisiana) Read More »

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);  Herbaraium (O. basilaris ramosa); Herbarium (O.

Opuntia basilaris Read More »

Opuntia azurea

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 What is …

Opuntia azurea Read More »