Question: Which genus of plant life is sometimes called a catchbirdtree, Pisonia or Brownea?
Sentence (from "Pogonomyrmex occidentalis"): The specific epithet ""occidentalis"", meaning "of the west", refers to the fact that it is characteristic of the interior of the Western United States; its mounds of gravel, surrounded by areas denuded of plant life, are a conspicuous feature of rangeland.
Relevant evidence: No