Fig. 2. Cluster analysis similarity of 13 perennial cool-season grass entries from tall fescue (‘Kentucky 31’, ‘Maximize’, ‘Dovey’, and ‘Carmine’); festulolium (‘Hykor’ and ‘Felina’); tall wheatgrass (‘Jose’); intermediate wheatgrass (‘Manska’ and ‘Luna’); and smooth bromegrass (‘Lincoln’, ‘Lincoln YD’, ‘NE B1-2-C0’, and ‘NE B1-4-C2’) in nonstructural carbohydrate concentrations at the preheading stage.