NDHXOF PLATES. 



Plate. 



^gopogon geininiflorus 12 



Amlropogon cirrhatus 18 



hirtiflorus 19 



saccliaroides 30 



Wrightii 21 



Aristida Arizouica 23 



(Uvaricata 23 



Bouteloua arenosa 34 



aristidoiiles ' 35 



Burkei 36 



eriopoda 37 



Havardii 38 



hirsuta 39 



Humboldtiana 40 



oligostachya 41 



prostrata 42 



racemosa 43 



ramosa 44 



stricta 45 



trifida 46 



Buchloe dactyloides 47 



Cathestecum erectuiu 13 



Cencl»ru3 my osuroides 6 



tribuloides 7 



Chloris alba 39 



ciliata 30 



cucuUata 31 



glauca 32 



verticillata 33 



Elionunis barbiculmis 15 



Epicampes macroura 27 



rigens 88 



Eremochloe Bigelovii 48 



Kingii 48 



Eriochloa sericea 1 



Heteropogon contortus 16 



Hilaria cenclu'oides 10 



mutica 11 



Melica diffusa 49 



Porteri 50 



Muhlenbergia disticliopliylla 25 



gracilis 26 



Panicum bulbosuin 2 



ciliatissimum 3 



lachnauthum 4 



Setaria caudata 5 



Stenotapbrum Americanum f. 8 



Stipa flexuosa 24 



Thurberia Arkansana 9 



Trachypogon polymorpluis 17 



Tragus racemosus 14 



7 



