Poaceae Pennisetum tristachyum (Kunth) Spreng. - Peru C. Vargas 5371 image_info.php?img=images/collections/cvargas_005371_01_p.jpg&id=110042#image110042 Poaceae Pennisetum tristachyum (Kunth) Spreng. - Bolivia G. Beck 1783 image_info.php?img=images/collections/gbeck_001783_01_p.jpg&id=110043#image110043