INDEX. 



623 



PAGE. 



Waldeteinia, WlUd 134 



fragarioides, Tratt 134,515 



Wyethia, Nutt 550 



amplexicaulis, Nutt 550 



Xanthium, Tourn 241 



Canadense, Mill 241 



var. echinatum, Gr 241 



echinatum, Murray 241 



spinosum, L 242 



strumarivm, L., var. Canadense, 



T.&G 241 



Xanthoxylum, Golden 93 



PAGE, 



Americanum, Mill 93 



Jraxineum, Willd 93 



ramiflorum, Mx 93 



tricarpum, Hook 93 



XylosUum dliatum, Pursh 197 



var. 13, album, Pursh 196 



Tartaricum, Mx 197 



villosum, Mx 198 



villomm, Richards 198 



^zia awea, Koch 181 



cordata, Koch 181 



integerrima, DC 180 



