244 



EPIPACTIS GIGANTEA, Dougl. 



San Juan Valley. 



Prosartes trachyoarpa, Watson, King's Eep., 344. 



Sierra Sangre de Gristo and abundant in the La Plata Mountains. 



Allium acuminatum, Hook. 

 La Plata and Animas Valleys, 8,000 feet 



Yucca baccata, Torrey. 



Southwestern Colorado — common at 8,000 feet altitude ; growing at 

 a higher altitude than Y. angustifoUa. 



Festuca tenella, Willd. 

 Caiion City. 



Stipa pennata, L. 

 Caiion City. 



Oryzopis asperifolia, Mx. 

 Piedra Mountains, 9,000 feet. 



Glyceeia nervata, Triu. 

 "Wet Mountain Valley. 



AiRA FLEXUOSA, L. 



Alpine — Sierra Sangre de Gristo. 



Eatonia obtusata, Gray. 

 Near Caiion City. 



Setaeia caudata, Eoem. & Schultz. 

 Caiion City. 



Bouteloua eriopoda, Torrey. 

 San Juan Valley. 



Bouteloua polystachya, Torrey. 

 San Juan and Mancos Valleys. 



Melica stricta, Poland. 

 Parrott City, 8,500 feet. 



Eragrostis po^oides, Beauv., var. megastachya, Gray. 

 Caiion City — introduced. 



Tricuspis pulchella, Torrey. 

 San Juan Valley. 



Galamagrostis Langsdorffii, Triu. 

 Parrott City. 



Andropoqi-on Jamesii, Torr. 

 San Juan Valley. 



The following is a list of plants seen growing in Southwestern Colo- 

 rado on the plains of the western slope below an altitude of 8,000 feet. 

 As those of the higher altitudes are generally found throughout the 



