INDEX. 



SYNONYMS AND SPECIES MERELY REFERRED TO ARE IN ITALICS. 



Abronia arenaria, 436 

 " mellifera, 435 

 " turbinata, 436 

 " umbellata, 436 

 Acsena trifida, 294 

 Acer barbatum, 259 

 " circinatum, 258 

 " Douglasii, 259 

 " glabrum, 259 

 " macrophyllum, 258 

 Achillea Millefolium, 361 

 Achlys triphylla, 219 

 Aeonitum nasutuni, 217 

 Actcea arguta, 217 

 " spicata, 217 

 Actinella Bichardsonii, 356 

 Adenocaulon bicolor, 335 

 Adenostoma fasciculata, 293 

 JEgilops histrix, 495 

 jEseulus Californica, 260 

 Agrostis asperifolia, 486 

 " canina, 485 

 " cryptandra, 484 

 " exarata, 486 

 " microphylla, 486 

 " minutissima, 484 

 " pallens, 486 

 " scabra, 485 

 " Schiedeana, 486 



Aira caBspitosa, var., 487 

 " danthonioides, 487 

 " elongata, 487 

 Alchemilla arvensis, 293 

 " cuneifolia, 293 



" occidentalism 293 



Allotropa virgata, 386 

 Alopecurus geniculatus, 479 

 Alnus glauca, 467 

 " incana, 467 

 " Oregona, 466 

 " rhombifolia, 467 

 " rubra, 467 

 " serrulata, 467 

 Alsine tenella, 243 



" tenuifolia, 243 

 Amarantacese, 440 

 Amarantus albus, 440 

 Ambrosia coronopifolia, 350 

 " glandulosa, 350 

 " Lindheimeriana, 350 

 " psilostachya, 350 

 Amelancbier Canadensis, 291 

 Amida hirsuta, 360 

 Ammania latifolia, 295 

 Ammodia Oregana, 348 

 Amsinckia angustifolia, 413 

 " Douglasiana, 413 

 " intermedia, 413 

 125 



