50 INDEX. 



Page. 



Prairie June grass 16, 17, 21, 24 



Purshia iridentata 23 



Pyrus sambucifolia 23 



Kay less golden-rod 17, 19, 25 



Red sage 25, 27 



Red top 29, 31 



Ribes aureum 23 



cereum 23 



lacustre 23 



luteum ' 23 



Ruta-baga 34 



Sagebrush 17, 31 



Saltbush : 18, 24, 25, 27 



Salt grass 18, 24, 25, 30, 43 



Sandl ierg's bluegrass -. 16, 20 



Sarcobatus vermiculalus 24, 25 



Scirpus american us 25, 26, 36 



campestris 25, 36 



lacustris 36 



olneyi 25 



Scolochloa festucacea 36, 43 



Scrophularia orthocarpus 22 



Sedum douglasii 22 



Service berry 23 



Sheep fescue 17, 20, 21, 27 



Short-awned brome 21, 34,' 45 



Six weeks' grass 41 



Sitanion longifolium 21, 24 



villosum 24 



Slender fescue 41 



Small cord grass 30 



Snow berry 23 



Snow brush 21 



Spartina gracilis 30 



Spirostachys occidentalis 24, 25 



Sprangle top 36, 43 



Squirrel-tail grass 26, 41 



Stipa sp 41 



columbiana 16 



williamsii 16 



thurberiana 20, 21, 24 



viridula 21 



Suseda 24 



Symplxoriocarpus oreoph Uus 23 



Tetradym ia canesa m 20, 25 



spinosa 25 



Till< tia fusca 43 



Timothy 21, 28, 31, 43 



Trifolium dttimmum 21 



beckvAUui 21, 36 



cyathiferum 21, 36 



involucralum 21, 36 



microcephalum 36 



plumosum 21 



