A row of catalpa trees in full bloom.
catalpa definition by Webster's New World
Origin: Modern Latin ; from Creek katálpa uncertain or unknown; perhaps ; from ka-, combining form of iká, head plush tálpa, wing: uncertain or unknown; perhaps so called from the shape of the flowers
catalpa definition by American Heritage Dictionary
Origin: Creek kataƚpa : ka-, head + taƚpa, wing (from the shape of its flowers).