2 



no one by following 'him can tell to which genus certain plants be- 

 long. Agropyron saxicola and flexuosum are evidently species of 

 Elymus of the section Sitaniou, along with A. Seribueri. Elymus 

 triticoides is evidently a hybrid between E. condensate and the 

 creeping species of Agropyron, as is shown even by slight field- 

 work. 



In the new Gray's Manual, Hitchcock is generally accurate, 

 but on page 168 he gives Hordeuin nodosum with awns only 1-1. 

 5 mm. instead of 1-1.5 cm. long. 



In g*nng over our western grasses it has required a critical 

 examination of Beal's excellent work, Grasses of North America. 

 Anyone attempting to publish knows how exasperating are his 

 own and the compositor's combined blunders. It is a real service 

 to those who follow to correct them. In this spirit I offer these 

 corrections. 



On page 45 he has Andropogon tenerwith a stipe 3-6 cm. in- 

 stead of mm. long, and glumes 4-5 cm. instead of mm. 



Uilaria is given as published in 1815 when it should be 1816. 

 On page 68 II. cenchroides has spikelets about 5 mm. not 5 cm. 

 long as given ^ 



On page 1% ^Egopog^n gemmiflorus is given as published in 

 181 » when it should be 1820. 



On pajie ?4 Nazia occidentals is quoted as having been gath- 

 ered by me in Colorado, when it should be Arizona. It has spike- 

 5-8 cm., not mm. long as given. 



On page 93 Paspalum distichum is given as distichium. 



On page 102 Eriochloa sericea is given as perennial, which is 

 is very doubtful. On the next page E. punctata is also called pere- 



ennial, when it is annual. 







On page 104 Panicum is given as first publi-hed in L. Sp. PI. 

 when it was in the Systema and later in the Genera. Beal does not 

 follow the Brittonian code. 



Under Chamaeraphis he says the species are annual, but C. 

 caudata is perennial though blooming the first year. 



Under Aristida barbata, page 11)9, "lateral awns" should be 

 terminal or central, and "central" should be lateral. On page 202 

 A. Palmeri is given as c llected by me in Colorado, when it should 

 be Albuquerque New Mexico. On page 2o5 A. Americana is given 

 as from Colorado by Orcutt, wln«n it should be the Colorado des- 

 ert California, which reminds one of Coulter's amusing blunder in 

 his Flora of Texas pag 434 where the understudy who wrote it 

 did not know the difference between the Trinity mountains of 

 Texas and those of Nevada, in copying from Watson's revision the 

 descriptions of the two species Allium bisceptrum and A. Neva- 



