Question: Which genus has the most species of trees, Mesquite or Ceanothus
Sentence (from "Ceanothus"): "Ceonothus"" comes from a Greek word meaning "spiny plant", Ancient Greek: κεάνωθος ("keanōthos"), which was applied by Theophrastus (371–287 BC) to an Old World plant believed to be "Cirsium arvense".
Relevant evidence: No