|Buchloë dactyloides or Bouteloua dactyloides ???|
Botanists routinely assert that each plant has only one scientific name. When you look up a plant and find two authoritative sources giving different scientific names, botanists seem like liars.
I recently encountered that with buffalo grass, listed as both Buchloë dactyloides and Bouteloua dactyloides. (posts on buffalo grass: and bison, drought-tolerance)