Manual of the Grasses of the United States

3-nerved Acad acuminate Agropyron Agrost Amer Andropogon appressed Aristida Arizona ascending awnless Based on Panicum Based on Poa Beauv blades flat branches Bromus Calamagrostis Calif California callus Carolina Club Bul Contrib culms culms erect densely elongate Elymus Eragrostis Fernald fertile lemma Festuca FIGURE flexuous floret Florida Fourn glabrous glumes glumes and floret Gram grass hairs Herb Hitchc involute Jour keel Kunth lemma ligule lower Melica Mexico Michx Muhl Muhlenbergia Nash Nees nerves nodes Nutt palea panicle panicle narrow Panicum Paspalum pedicels Perennial pilose Plant pubescent racemes rachilla rachis rhizomes Rhodora Rottboellia Rydb scabrous Schult Scribn second glume sessile sheaths glabrous slender spike spikelets spreading staminate sterile lemma Steud synonym Syst tall Texas Torr Torrey Bot Trin tufted Type species U. S. Dept U. S. Natl usually Vasey views of spikelet villous wide Willd