NOTES ON POTAMOGETON 199 



Island, about a hundred miles from the coast of Nova Scotia, just 

 such as one might gather on a Scottish moor. 



Sable Island is some two hundred and seventy-five miles from 

 the Isle of Miguelon and St. Pierre, off Newfoundland ; the next 

 nearest points in which it has been gathered are, I believe, the 

 Azores (about fifteen hundred miles), Madeira, and the Canaries. 

 On Sable Island the plant occurs in shallow pools where water was 

 deeper earlier in the spring ; indeed, in some places the pools were 

 almost dry. It was the common species in the shallow or (nearly) 

 dried up pools. Lobelia Dortrntmna, Polygonum hydropiperoides, and 

 MyriophyJlum teneUum. occurred with it. In a deep pool on the 

 island there also occurred F. perfoiiatiis L., P. pectinatus f. pseudo- 

 marimis Ar. Benn., P . pennsijlvanicus Qih^^in., and P. pusUlnsJj. var. 

 capitatns Ar. Benn. 



I hope the plant will now be searched for, particularly by 

 botanists in Nova Scotia and Newfoundland. Originally Sable 

 Island consisted of two adjacent islets, but it is now, according to 

 Prof. Macoun, merged into one, and is "a bank of sand about 

 twenty-one miles long, and from one hundred yards to one and a 

 half mile in width. The lagoon that receives the sea-water is 

 about nine miles long ; at the point where the lagoon ends is a 

 sand-bank, which shuts off the lagoon from a series of pools of 

 fresh water which were certainly part of the lagoon long ago." 



P. LUCENS L. var. Connecticutensis Kobbius. Dr. Morong, when 

 sending me specimens after the publication of his monograph, wrote, 

 "I think this should go rather to P. Zizii than to luceiis," and in 

 this I entirely agree. It will stand as P. Zizii Koth var. Con- 

 necticutensis MoroDg in litt. = P. angustifoliiis Bercht. & Presl. var. 

 Connecticutensis mihi. 



P. Faxoni Morong, Naiad. N. Amer. (Mem. Torr. Club, iii. 22 

 (1893) ). The plant here described by Dr. Morong as a new species 

 was named by its finder " P. rufescens?"; others suggested F. 

 lonchites, and in this Journal for 1890, 301, I suggested it might 

 be a hybrid. It was afterwards found that specimens of rufescens, 

 lonchites, and a third doubtful plant had been distributed as if the 

 same. The plant seemed to approach lonchites on one side, and, 

 though less nearly, rufescens on the other. When specimens were 

 first sent me by Dr. Morong, I suggested to him it was possibly 

 Claytonii X rufescens [alpinus). Further specimens did not support 

 the affinity with rufescens, but I still have some difficulty in re- 

 garding them as distinct from Io7ichites, and am still of opinion 

 that the two specimens first sent are different from all those sent 

 later, and that the upper leaves very closely resemble those of P. 

 Claytonii Tuck. In its submerged leaves lonchites has a wide range 

 of variation — in some specimens leaves 13 in. x i in., in others 

 15 in. X li in. ; the latter form will likely enough some day be 

 suggested as lonchites x amplifoUus Tuck. 



P. nitens Weber ?. Prof. Macoun sends me specimens of two 

 remarkable plants collected by Mr. W. Scott in 1897 at Navy 

 Island, and at Queenstown, Ontario. Although unlike in habit, I 



