CATALOGUE OF CANADIAN PLANTS. 391 



referred in Part IV. to S. Columbiana, belong here, if this proves a 

 distinct form. No. 18, of 1889, was gathered at Yale, B.C. (Macoun.) 



(2 I 738.) S. comata, Trin. & Eupr. ; Macoun, Cat. IV., 190 ; No. 20 

 Macoun, 1889 338 Scribner; 201 M. E. Jones (Colorado); 49 

 Kusby (Arizona); 1625 Henderson (Oregon); and 3T Tweedy 

 (Washington). 



" Awn 5J inches long, flowering glumes with callus 7 inches long." 

 (Scribner.'} My No. 20 was growing in abundance in tufts on dry flats 

 at Spence's Bridge, B.C., May, 1889. (Macoun.') "No 19 is the same 

 species but the awns are only about 4 inches long, flowering glume 

 including callus 5 inches long." (Scribner.) No. 19 was abundant in 

 the same situation at Kamloops, B.C., June, 1889. (Macoun.) 



687. ORYZOPSIS. 



(2746.) O. cuspidata, Benth. ; Macoun, Cat. IV., 193. 



Abundant on the sandy soil just across Spence's Bridge (on the north 

 side), B.C., May, 1889. (Macoun.) 



689. MUEHLENBERCIA. 



(2749.) M. glomerata, Trin.; Macoun, Cat. IV., 194. 



Rather common in grassy thickets at Agassiz, B.C. r July, 1889. 

 (Macoun.) 



693. SPOROBOLUS. 



(2757.) S. asperifolius, Thurber; Macoun, Cat. IV., 197. 



On saline flats south of Kamloops, B.C., June, 1889. (Macoun.') 

 " Spikelets sometimes 2-flowered, second flower pedicellate and im- 

 perfect." (Scribner.) 



(2758.) S. cryptandrus, Gray; Macoun, Cat., IV., 197. 



On arid soil at Spence's Bridge, and at Trout Creek at the southern 

 end of Lake Okanagan, B.C., July, 1889. (Macoun.) 



694. ACROSTIS. 



(2763.) A. canina, Linn.; Macoun, Cat. IV., 198. 



Prof. Scribner says of this species: "This is A. rubra, Linn. May 

 be called A. rubra, Linn., var. Americana. It is the same as A. rupestris. 



