I 



Coniribulions to Canadian Botany. 201 



attenuate both ways, finely ciliate, and pubescent upon 

 the single nerve beneath, otherwise glabrate, 2 to 'Ih 

 inches in length ; flowers terminal or subterminal on the 

 branches; calyx ovate, not much inflated, about 4 lines 

 long, in anthesis but two lines in diameter with green 

 nerves interlacing above; the teeth obtuse, with broad green 

 membraneous ciliate margins ; petals 1^ times the length 

 of the calyx ; the blade obcordate, \\ lines long, consider- 

 ably broader than the slender auricled claw, appendages 

 lance-oblong. 



Peers Eiver, Mackenzie River Delta, 1892. {Miss E. 

 Taylor.) 



Lychnis tbifloba, R. Br. var. Dawsoni, Robinson, Proc. 

 Amer. Acad, xxviii, 149. 



Calyx with pi-incipal nerves double or triple, joined by 

 interlacing veinlets ; the intermediate nerves beneath the 

 sinuses inconspicuous or wanting ; petals very narrow ; 

 the blade oblong, bifid, hardly to be distinguished from the 

 narrow claw. 



Gravel banks, Dease Eiver, 100 miles north-east of Dease 

 Lake. Lat. 59°, B.C., 1887. {Dr. G. M. Dawson.) 



Claytonia Chamissonis, Esch. 



Growing at high-water mark at Comox, Vancouver 

 Island, 1893. (John Macoun, Herb. No. 29.) * These are 

 our first authentic specimens of this species. 



Claytonia pabvifolia, Mog. 



Damp rocks, Sproat, Columbia River, B.C. ; Griffin Lake, 

 B.C. ; Agassiz, B.C. (John Macoun.). Not before recorded 

 between Selkirk Mts. and Vancouver Island. 



Opuntia pragilis, Haw. 



This plant, of which specimens were collected by Mr. A. 

 C. Lawson in 1884 on islands in the Lake of the Woods, was 

 found again in 1894 by Prof A. P. Coleman on Red Pine 



• Whenever herbarium numbers are given, they are the numbers under which 

 specimens have been distributed from the hebariom of the Geological Survey of 

 Canada. 



