Opuntiads of the USA
(by Joe Shaw and Dave Ferguson)
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Opuntia basilaris
O. basilaris is a distinctive plant; most forms are spineless. The taxon is discussed in the Flora of North America online. Several varieties have been described. Pamela J. MacKay of the Victory Valley College in Victorville, CA has written an article on O. basilaris var. brachyclada.
In the past O. basilaris and its forms have been confused with O. aurea; the two species are separate and distinct.
Read about O. basilaris as described in 1856 in the Proceedings of the American Academy of Arts and Sciences (Engelmann and Bigelow) 3:298-299. |
Opuntia basilaris, near Kingman, AZ |
Opuntia basilaris, near Kingman, AZ |
Opuntia basilaris var. brachyclada, photo by Dean Wm. Taylor |
Opuntia basilaris, near Kingman, AZ |
Opuntia basilaris var. brachyclada, photo by Thomas Stoughton, US Forest Service |
Opuntia basilaris var. brachyclada, photo by Thomas Stoughton, US Forest Service |
Opuntia basilaris var. brachyclada, photo by Thomas Stoughton, US Forest Service |
Opuntia basilaris var. brachyclada, photo by Thomas Stoughton, US Forest Service |
Opuntia basilaris var. brachyclada, photo by Thomas Stoughton, US Forest Service |
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Opuntia basilaris near Wikieup, AZ, ca, 2,400 ft. elevation |
Opuntia acanthocarpa near Chloride, AZ (often occurs with O. basilaris) |
Opuntia basilaris, northeast Arizona |
 Opuntia basilaris, near Searchlight, NV, July 2007, with Grusonia parishii and Larrea tridentata |
 Close-up of plant to left, Ountia basilaris, elevation ca. 3,500 ft |
 Pad detail of plant at far left, Opuntia basilaris, July 2007, near Searchlight NV |
 Opuntia basilaris, multiple plants on roadside cut, near just south of Hoover Dam, on main Highway, July 2007 |
 Opuntia basilaris, Mojave Desert |
 Opuntia basilaris, Mojave Desert |
 Opuntia basilaris |
 Opuntia basilaris, eastern slopes of Mt. Charleston (near Las Vegas, NV) |
 Close-up of plant at immediate left, about 4,000 ft elevation |
 Opuntia basilaris, garden plant (Photo by Criag Howe) |
 Close-up of flower on plant at left |
 Opuntia basilaris, Gold Point, NV (photo by Craig Howe) |
 Opuntia basilaris, Pipe Springs, AZ (photo by Craig Howe) |
 Opuntia basilaris, Pipe Springs, AZ (photo by Craig Howe) |
 Opuntia basilaris var. ramosa, Rio Grande Botanic Garden, Albuquerque, NM |
 Opuntia basilaris var. ramosa, garden plant (photo by Craig Howe) |
 Opuntia basilaris var. ramosa, close-up of flower at left (photo by Craig Howe) |
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Opuntia basilaris, near Kingman, AZ |
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All materials copyrighted, 2005-2010, Joe J. Shaw and David
Ferguson, except where otherwise noted.
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