193 



65. Festiica ovina L. var. oregana Hack. = F. idahoensis Elmer. 



66. Festiica scabrella Torr. = F. altaica Trin. 



76. Festiica rubra L. var. piibescens Vasey = var. Kitaibeliana 

 (Schultes) Piper. 



68. Festiica rubra L. var, Uttoralis Vasey = var. prtiinosa Hack. 



69. Bromus racemosus L. var. commutatiis Hook. = B. com- 



mntatiis Schrad. 



70. Bromus hordeaceus L. var. glabrescens Shear = var. lep- 



tostachys Beck. 



71. Bromus Gussoni Pari. = B. villosus Forsk. and prob. var. 



Gussonei Aschers. & Graebn. 



72. Agropyron divergens Nees = A. spicatum (Pursh) Scribn. 



& Sm. 



73. Agropyron brevifolium- Scribn. = A. violacetim V^asey. 



74. Agropyron Elmeri Scribn. = A. lanceolatum Scribn. & Sm. 



75. Agropyron dasystachyum [(Hook.) Scribn.] var. siibvillosum 



Scribn. & Sm. = A. siibvillosum (Hook.) Piper. 



76. Hordeum maritimum With. = H. geniculatum All. 



77. Elymus saxicolus Scribn. & Sm. = Agropyron flexuosum 



(Piper) Piper. 



78. Elymus mollis Trin. = E. arenarius L. 



79. Elymus Uttoralis Turcz. = E. arenicola Scribn. & Sm. 



80. Sitanion elymoides Raf. Prob. = S. Hystrix (Nutt.) Sm.. 



81. Sitanion glaber J. G. Smith = 5. rigidum Sm. 



82. Sitanion villosum J. G. Smith = S.jubatum Sm. 



83. Sitanion Leckenbyi Piper = S. planifolium Sm. 



84. Sitanion flexuosum Piper = Agropyron flexuosum (Piper) 



Piper. 



85. Sitanion Brodiei Piper = Elymus canadensis L. 



To assert that all the above changes are accepted as universally 

 valid is simply to assume the existence of a nomenclatorial tribu- 

 nal Avhose decisions are everv'where accepted as final. Since a 

 species is not an objective entity but a subjective concept, its 

 limitations must in the end remain a matter of private judgment. 

 Doubtless some modern agrostologists would retain many of 

 Howell's names: but it is believed that the changes suggested 

 above approximate the present consensus of opinion regarding 

 specific limitations. 



