Trichocereus macrogonus var. pachanoi (San Pedro Cactus), formerly known as Trichocereus pachanoi or Echinopsis pachanoi, is a fast …
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Epithet: pachanoi
Derivation: Honors Professor Abelardo Pachano (1885-1958), a famous Ecuadorian who assisted American botanist Joseph Nelson Rose on his South American expedition.
Pronunciation: puh-KAH-no-ee
While the generic name must be unique, two or more genera often share the same specific epithet. Moreover, the same epithet can be used for subspecies, varieties, and forms within a species. Here is a list of plants that share this epithet.