372 GEOLOGICAL SURVEY OP CANADA. 



forma satina, Voch ! (It really comes under P. flabellata, Bab., as a 

 variety, but without fruit, it is impossible to say so.)" (Bennett, 

 Letter, 1890.) In a saline pond north of Kamloops, B.C., June 13th, 



1889. (Macoun.) 



(2449.) P. pectinatus, Linn.; Macoun, Cat. IV., 88. 



"Judging by the young fruit this (No. 12) must go to P. pectinatus, 

 Linn., as an aggregate. It comes close to the var. longissimus, Mertens & 

 Koch (1823), which was issued in the Flora Lugricre, I860; as the var. 

 longissimus, Weissmann Fl. Petrop." (Bennett Letter, March 3rd, 1890.) 

 Pond on the Indian Keservation at Kamloops, B.C., June 26th, 1829. 

 (Macoun.} 



657. RUPPIA. 



(3291.) R. lacustris. 



Stems rigid, firm and woody, forking and producing numerous 

 leaves in bud-like clusters at the nodes and ends of the branches. 

 Leaves sheathing, rigid and straight ; stipules white, membraneous from 

 one to two inches long. Fruiting peduncles bright red rising from the 

 centre of the leaf clusters, coiling spirally after flowering. Fruit im- 

 mature. 



A very distinct species, having more the appearance of Potamogeton 

 pectinatus than Euppia maritima. Abundant in a saline pond north of 

 the Ferry at Kamloops, B.C., June 13th, 1889. The pond is one of a 

 series in the bare hills above the trail leading to Tranquille. (Macoun.) 



665. HELEOCHARIS. 



(2467.) H. ovata, B. Br. ; Gray, Man., ed. VI., 574. 



H. obtwa, Schultes; Macoun, Cat. IV., 95. 

 Not uncommon in British Columbia. Agassiz. 1889. (Macoun.) 



(2468.) H. palustris, Linn., var. Watsoni, Clarke, Journ. Bot., 

 XXV., 268. (1887.) 



Stated by Mr. Clarke to occur in Newfoundland, Labrador, and sub- 

 arctic America, and to be a very trifling depauperate form or variety 

 with castaneus spike. (Britton.) Hudson Bay. (Burke, fide Britton.) 

 In wet sand, Brackley Point, Prince Kdward Island. 1888. (Macoun.) 



