Manfreda virginica

Manfreda virginica, commonly known as the False Aloe or Rattlesnake Master, is a species of flowering plant related to agaves. It is native to an area stretching from North Carolina west to Texas in the United States and south to Nuevo León and Tamaulipas in Mexico. False Aloe is acaulescent, meaning the stem is extremely short. Leaves and flower...
Found on http://en.wikipedia.org/wiki/Manfreda_virginica
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