Mammoth Uncensored Word List:
25 words ending with la, 11 letters long

chrysocolla chuckawalla cicatricula cirronebula cladophylla diencephala diverticula epencephala fothergilla gentianella gubernacula hibernacula infundibula involucella midblastula pasteurella receptacula selaginella sporangiola subopercula subumbrella supernacula terebratula tibiofibula trichinella