MACOUN.] CATALOGUE OP CANADIAN PLANTS. 45 



(164.) D. cylindricus, (Bruch.)Bruch & Schimp. ; Lesq. & James, 

 Mosses of N. America, 105. 



On rocks at Wiarton, Bruce Co., Ont, (Macoim.) Grod'^iavn, Grreen- 

 land. (Fl. Gr.) Miquelon Island. (JDelamare.) 



36. LEPTODONTIUM, Hampe. 



(165.) L. Canadense, Kindb. (n. sp.) 



Tufts loosely cohering, nearly without rhizoides, dark green, blackish 

 below. Stem about 1 cm. high, nearly simple. Leaves squarrose, 

 flexuose, undulate and not recurved at the borders, when dry curled- 

 sublingulate, acute, entire below the middle, coarsely and unequally 

 serrate above, not margined ; lower basal cells rectangular and sub- 

 pellucid, the upper at the middle quadrate, the uppermost rotundate, 

 slightly papillose ; costa finally brown, short excuirent. Dioecious ; 

 only female plants found. 



In this species the leaves are larger than in the European species. It 

 is peculiar that this genus has not been represented before in the 

 North American Moss-Flora. 



On stones in the Sydenham River below Jones Falls, Owen Sound, 

 Ont., Sept. 17th, 1890. {Mac&un.') 



37. LEPTOTRICHUM, Hampe. 



(166.) L. tortile, Muell. ; Lesq. & James, Mosses of N. America, 

 105 ; Canadian Musci, No. 65. 



Didymodon tortile, Drumm. Muse Bor.-Am., No. 118. 



Portage between Fort William and Eainy Lake, west of Lake 

 Superior. (Drummond.) Growing on clay, Nipisiquit Falls, Kent Co., 

 N.B. (Fowler's Cat.) Nottingham Island, Hudson Strait. (B.Bell.) 

 On earth at Truro, N.S. (Macoun.) On earth at Canaan Forks, 

 Queen's Co., and Tay, York Co., N.B. (J. Moser.) New Harbor, 

 Newfoundland. (B&v. A. Waghome.) Pictou, N.S. (McKay.) 



(167.) L. vaginans, Lesq. & James, Mosses of N. America, 106 ; 

 Canadian Musci, No. 386. 



On earth by roadsides, Brackley Point, Prince Edward Island. 

 (Macoun.) On roadsides, Kent Co., N.B. (Fowler's Cat.) 



