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''Acanthocereus tetragonus'' is a species of cactus that is native to Florida and the Lower Rio Grande Valley of Texas in the United States, Mexico, Central America, Caribbean, and northern South America. Common names include night-blooming cereus, barbed-wire cactus, sword-pear, dildo cactus, triangle cactus, and Órgano-alado de pitaya . It was originally described by Carl Linnaeus in 1753 as ''Cactus tetragonus'' but was moved to the genus ''Acanthocereus'' in 1938 by Pieter Wagenaar Hummelinck.

Similar species: Pinks, Cactuses, And Allies
Species identified by Joe Spandrusyszyn
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By Joe Spandrusyszyn

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Uploaded Feb 7, 2019. Captured Jan 28, 2019 14:41 in Snake Bight Trail, Homestead, FL 33034, USA.
  • ILCE-6300
  • f/5.6
  • 1/1000s
  • ISO1600
  • 300mm