INDHX OF PLATES. 



Plate. 



Aristida purpurea 7 



( Jhloris Swartziana 23 



Cottea pappophoroides 29 



Diplachne fascieularis 41 



imbricata 42 



Reverchoni 43 



rigida 44 



viscida 45 



Elionurus tripsacoides 1 



Elymus Sitanion ■ i 50 



Eragrostis curtipedicellata 46 



lugens 47 



oxylepis 48 



Purshii 49 



Hilaria rigida 2 



Lycurus phleoides 15 



Mublenhergia Buckleyana 12 



depauperata 14 



Neo Mexicana 13 



Schaffneri 14 



Munroa squarrosa 31 



Oryzopsis fimbriata 11 



membranacea 10 



Paspalum disticbum 3 



lividum 4 



pubiflorum 5 



Phalaris intermedia var. angusta (5 



Pappopborum apertum 17 



Wrightii , 28 



Schedonnardus Texauus 24 



Scleropogon Karvvinskianus 30 



Sporobolus argutus 16 



Buckleyi 17 



interruptus 18 



tricbolepis 19 



Wrightii 20 



Stipa pennata 8 



Scribneri . 19 



Trichloris pluriflora 24 



verticillata 25 



Triodia acuminata 32 



albescens 33 



eragrostoides 34 



grandiflora 35 



Nealleyi 36 



pulchella 37 



stricta 38 



Texana , 39 



trinerviglumis 40 



Trisetum Hallii 21 



interruptum . . . „ 22 



