128 GEOLOGICAL SURVEY OF CANADA. 



(2565.) C. Liddoni, Boott, Hook., Fl. 11., 214, (1840.) 



This species is distinguished by its erect and thick rusty head, and 

 very large and comparitively firm brown perigynium. (Bailey.y 

 Taking the above view of the species. Prof. Bailey refers our specimens 

 to C pratensis, Drej., yet Mr. Arthur Bennett, of Croydon, England, 

 assures me that our specimens are identical with those in Boott's her- 

 barium. It is certain that Boott's figure in Hooker's Flora Boreali 

 Americana, is difi'erent in appearance from our specimens, and it is 

 probable that Boott has figured a young plant of one species and 

 retains a well grown one of another under the same name in his 

 herbarium. Owing to the place of growth, and the absence of all 

 boreal" surroundings, I am of opinion that our prairie specimens are 

 not 0. pratensis, whatever else they may be, but place them there- 

 because I can do no better. Fine specimens with stout culms and well 

 developed spikelets forming a fairly compact head, were gathered at 

 Cedar Hill, Yancouver Island. These are referred to 0. Liddoni by 

 both Lange and Bailey. {Macoun.} 



(2566.) C. pratensis, Drejer, Eev. Ci-it. Car. Bor., 24, (1841.) 



Specimens that we refer here were collected on sand on the east, 

 coast of Lake Superior, above Michipicotin, in the summer of 1869, and 

 named 0. Liddoni by Prof. Dewey, of Eochester. From the remarks 

 of Prof. Bailey, I am inclined to believe that they belong here. The 

 spikelets are very much narrowed at the base, and in some instances 

 the lower ones become compound. Specimens of this form can be seen 

 in Prof. Dewey's herbarium. {Macoun.) Pic Eiver, Lake Superior 

 (Loring.') Middle Bay, Labrador. {Allen.') Greenland. {Lange.) 

 Moose Mountain Creek and westward on the Souris Plain, Assiniboia.. 

 (J. M. Macoun.) Very abundant on the open prairie, and in thickets 

 throughout Manitoba and westward to the Eocky Mountains. I have 

 often seen many acres covered with the tufts of this species, and 

 admired the silvery hue and nodding habit of the spikes. Eather 

 common in the lower valleys of the Eocky Mountains and in the- 

 Columbia Yalley, at Donald, B.C. ; along the Nachacco Eiver, British 

 Columbia, and not uncommon at Goldstream, Cedar Hill, and through- 

 out southern Vancouver Island. {Macoun.) 



Since the notes on 0. Liddoni and C. pratensis were written, I have 

 had a report from Prof. John Lange, author of " Conspectus FlorsB 

 GroenlandicsB." He says that the specimens from Michipicotin, Lake 

 Superior, and the Nachacco Eiver, B.C., are the same and seem to be in- 

 termediate between G. scoparia, Schk., and (J. pratensis, Drejer. The 

 specimens from the prairie are the same as those of Coulter's Manual, 

 refeiTcd to G. pratensis, Drejer., by Bailey. The Vancouver Island. 



