Part. Plate. 



Heteropogon contortus I 16 



Hilaria cenchroides I 10 



mutica I H 



rigida II 2 



Lycurus phleoides J,'... ... II 15 



Melica diffusa I 49 



Porteri '. I 5() 



Miihlenbergia Buckleyana II 12 



depauperata II 14 



distichophylla I 25 



gracilis I 26 



Neo-Mexicana II 13 



Schaffneri II 14 



Munroa squarrosa II 31 



Oryzopsis fimbriata II 11 



membranacea II 10 



Panicum hulbosum I 2 



ciliatissirnum I 3 



lachnanthum I 4 



Paspalum distichurn II 3 



lividum II 4 



pubifl6rum II 5 



Phalaris intermedia, var. angusta II 6 



Pappophorum apertum II 17 



Wrightii II 28 



Schedonnardus Texanus II 24 



Scleropogoii Karwinskianus II 30 



Setaria caudata I 5 



Sporobolus argutus II 16 



Buckleyi II 17 



interruptus II 18 



tricholepis II 19 



Wrightii II 20 



Stenotaphrum Americanum I 8 



Stipa flexuosa I 24 



pennata II 8 



Scribneri II 19 



Thurberia Arkansana I 9 



Trachypogon polymorphic I 17 



Tragus racemosus I 14 



Trichloris pluriflora II 24 



verticillata II 25 



Triodia acuminata .' II 32 



albescens II 33 



eragrostoides II 34 



grandiflora II 35 



Nealleyi '. . '. II 36 



pulchella II 37 



stricta II 38 



Texana II 39 



trinerviglumis II 40 



Trisetum Hallii II 21 



interruptum II 22 



