20 



worse Piper overlooked the earlier B. ciliatus var. ligulatus which 

 his Brittonian system will compel him to adopt along with a new 

 set of names. The whole system has become an intolerable nui- 

 sance, and yet this is not the worst part of it. 



SIT ANION. 



A study of the genus in the light of Smith's revision shows 

 that it cannot be maintained for it passes directly into Elymus at 



all points. 



(Vasey) 



Agropyrou >eribneri Vasey Torr. Bull 10 128. 



Elymus Sauudersii includes Sitanion planifolium and lanceola- 

 tum. 



Elymus brevifolius (Smith)y^^.- 



Sitanion brevifolium Smith Rev. Sit. 17. This includes S. Leck- 

 enbyi, longifolium and pubiflorum. 



Elymus insularis (Smith). 



Sitanion insulare Smith 1. c. 14. 



Elymus Hystrix (Nutt.). 

 iEgilops Hystrix Nutt. Gen. 1 86. This includes S. elymoides, 

 molle. cinereum, atrigosum, caespitosum, montauum and Brodiei. 

 Elymus minor (Smith Rev. Sit. 1. c. 12 as Sitanion). 



Elymus multisetus (Smith)/ r*t J 



Sitanion multisetum Smith Rev. Sit. 1. c. 11. This includes S. 

 jubatum and villosum. 



Elymus ambiguus includes E. salinus Jones, E. simplex S. & 

 \V. and E. aristatus Merrill. 



Pan i cum Urvilleanum occurs from Kelso in the Amargosa 

 desert south and west, California. Hitchcock & Chase do not re- 

 cord it within a longdistance from there. 



Carex fissuricola Mackenzie. Mackenzie goes directly against 

 the facts m making thn new name :or C. ablata Bailey Bailey 

 in Froc. Am. Acad. 22 92 gives frk'ida as found by Watson (see 

 Hot King's Exp) in Cottonwood Canon Utah, also says it may be 

 C. lazulffifoha, then in But. Gaz 13 92 he describes it and quotes 

 \\ atson's plant as the first of tin- type specimens, my own copi- 

 ous material has been widely distributed. In Coulter's Manual 380 

 published earlier he describes the species fully, based on the Utah 

 specimens and under fie head of C. frigida. It therefore is cer- 

 tain that the Utah material is the basis of C. ablata. and on this 

 C fiissurata is founded and by altering Bailey's characters in sev- 



