Bulletin #2267, Maine Forage Facts: Smooth Bromegrass (PDF) By Jaime Garzon, Assistant Extension Professor and Dairy Forage Educator, University of Maine Cooperative Extension For information about UMaine Extension programs and resources, visit extension.umaine.edu.Find more of our publications and books at extension.umaine.edu/publications/. Smooth bromegrass Smooth bromegrass and detailed seedhead. Smooth bromegrass (Bromus inermis Leyss) is a