Organ
Pipe Cactus National Monument
Two spectacular
Mexican cacti live in a small corner of southern Arizona and nowhere else
in the U.S.
Organ
Pipe Cactus - Stenocereus thurberi: Also
found a few miles north and east of the monument.
Senita
Cactus - Lophocereus schottii: Restricted
to Senita Basin within the monument.
The
road into Senita Basin is now closed to vehicles, but several trails provide
access to hikers.
UPDATED
01/26/05
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| Three
Giant Columnar Cacti
Senita (foreground), Organ Pipe (right), Saguaro (left). |
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| Senita Cactus Lophocereus schottii | |
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| Senita: Spines at the top of the column are dense, bristly, and relatively soft. The other spines are clusters of small but stout spikes. | ||
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| Organ
Pipe Cactus Stenocereus thurberi
Fragile spines on black areoles. Weathered dead wood. Rare crested branch. |
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| Aging palo verde nurse tree with Organ Pipe (L) and Saguaro (R). |
Cactus
Forest: Senita, Organ Pipe, and Saguaro.
SENITA
3-D Anaglyph Photo
ORGAN
PIPE 3-D Anaglyph Photo
Arizona
Rare Cactus Photos