358 THE CANADIAN NATURALIST. [Sept. 



Potamogeton Vaseyi Robbins, 



spirillus Tiickerman, 



rufescens Schrader, 



amplifolius Tuckertnan, 



gramineus Linn, and 



Potamogeton paciflorus Pursk, 



pusillus Linn. — the 



var. vulgaris Fries, 



pectinatus Liiiii. 



Robbinsii Oakes, 



var. ? inyriophyllus ^o^^/»j, j Saggitaria heterophylla Pursh, 



lucens Linn. — the I Habenaria virescens Sprengel, 



var. minor Nolte, 

 perfoliatus Linn, and 



var. lanceolatus Robbins, 



■ compressus Linn, (ex Fries), 



■ o^\.\^%\io\\2,^ Mertens^X Koch, 



Juncus pelocarpus E. Meyer 

 Scirpus subterminalis Torrey, 

 Carex adusta Boott, 



Hvida WiUd. 



Triticum violaceum Hornemann. 



Littorella lacustris — abundant in the north of Scotland, 

 and widely distributed throughout Europe, chiefly among 

 the mountainous regions and extending into the arctic circle 

 — is now, for the first time, recorded as American. The 

 remoteness of the locality in which it was found ('on an island 

 in Gull Lake') gives it an undoubted claim to be a true native. 



Two interesting ferns have been added to the flora of Canada 

 during the past summer, viz. : — 



Cystea montana (Lam.) 



Polypodium montanum Latnarck Flore Francaise, vol. i. p. 23 ; Cyathea Smith 

 Turin Memoirs, vol. v. p. 417 ; Aspidium Swartz Synopsis Filicum, p. 61 ; 

 Cystopteris 0/ Authors ; Polypodium myrrhidifolium Villars Histoire des Plantes 

 des Dauphine, vol. i. p. 262; etc., etc. (FiHces Canadensis, No. 30 b.) 



It is well figured by Schkuhr (table 63) and in Hooker's 

 British Ferns (table' 25). In Europe it is generally distributed 

 from Lapland to the Apennines and Pyrenees ; in Asia it is said 

 to occur in East Siberia ; of America Sir Wm. Hooker says, 

 " We possess five specimens from the east side of the Rocky Mts. 

 " gathered by Drummond." It was found in some abundance by 

 Mr. Macoun on one of the most northerly bays of Lake Superior, 

 "in low woods, July 19, 1869," and may be looked for near the 

 same latitude throughout Canada East. 



Polystichum Fillx-mas (Linn.) 



Polypodium filix-mas LiuJimiis Species Plantarum, p. 1551 ; Polystichum i?t?/A Flora 

 Germanica, vol. iii. p. 82 ; Nephrodium Richard in Desvaux's Annals, vol. vi. 

 p. 260 ; Aspidium Swartz Synopsis Filicum, p. 55 ; Dryopteris Schott Genera 

 Filicum ; Lastrea Presl Tentamen Pteriodographije, p. 76 ; etc., etc. (Filices Canadensisi 

 No. 23 b.) 



Throughout Europe this is one of the commonest and most 

 abundant of ferns ; ia Asia its range extends from Siberia to 

 Asia Minor, the Himalayas and Japan ; it occurs in North 

 Africa; and one of its forms, (the Aspidium paleaceum of Don) 

 is common throughout America from Mexico to Peru. Its range 

 in temperate North America is not well understood ; Mr. Baker 



