Poaceae Elymus cordilleranus Davidse and R.W.Pohl - Peru C. Vargas 17511 image_info.php?img=images/collections/cvargas_017511_01_p.jpg&id=108795#image108795 Poaceae Elymus hitchcockii Davidse - Peru C. Vargas 15000 image_info.php?img=images/collections/cvargas_015000_01_p.jpg&id=108821#image108821 Poaceae Elymus hitchcockii Davidse - Peru C. Vargas 870 image_info.php?img=images/collections/cvargas_000870_01_p.jpg&id=108822#image108822 Poaceae Elymus hitchcockii Davidse - Peru C. Vargas 20356 image_info.php?img=images/collections/cvargas_020356_01_p.jpg&id=108823#image108823 Poaceae Elymus hitchcockii Davidse - Peru C. Vargas 20359 image_info.php?img=images/collections/cvargas_020359_01_p.jpg&id=108824#image108824