390 GEOLOGICAL SURVEY OF CANADA. 



Yale, B.C., May, 1889. We agree with Mr. Scribner in making this a 

 var. of A. geniculatus. (Macoun.) Prof. Scribner remarks of var. 

 robustus, Vasey, that it is just a stout grown plant of the species. 



685. ARISTIDA. 

 (2736.) A. fasciculata, Torr. 



A.purpurea, Nutt. ; Macoun, Cat. IV., 190 = (A. purpurea, Nutt., var. = 

 No. 336, Scribner, Montana Coll.) 



Abundant at Spence's Bridge, B.C. 1889. (Macoun.) 

 686. STIPA. 



(2739.) S. Macounii, Scribner, MS. 

 S. Richardsonii, Macoun, Cat. IV., 190. 



" This is the Stipa Richardsonii of Gray's Manual, but I think not of 

 Link. Your S. Richardsonii, var. major, is, I believe, Stipa Richardsonii, 

 Link. I look upon the eastern plant, with its smaller panicle and 

 spikelets, as a distinct species, and beg leave to name it S. Macounii.'' 1 

 (Scribner.) This species includes all the references under S. Richard- 

 sonii in Part IV. (Macoun.) 



(3202.) S. Richardsonii, Link. 



S. Richardsonii, var. major, Macoun, Cat. IV., 191. 



Not uncommon along the north shore of Shuswap Lake, near Scotch 

 Creek, B.C., June, 1889. (Macoun.) 



(2740.) S. spartea, Trin. ; Macoun, Cat. IV., 191. 



Abundant in many places on the hills around Kamloops and towards 

 Nicola Lake, June, 1889. (Macoun.) 



(2742.) S. Columbiana, Macoun, Cat. IV., 191. 



Distinguished from S. viridula by its acute callus and short palea, 

 this being scarcely half as long as its glume. (Scribner.) Not 

 uncommon in tufts on the flats at Kamloops, B.C., June, 1889. (Macoun.) 



S. ? (No. 18.) 



<' This = 613, Tweedy, 1885, and referred by me to S. viridula, from 

 which I now think it is distinct. Must study it more. Perhap.s it is 

 not separable from S. Columbiana." (Scribner.) My Yale specimens 



