216 GEOLOGICAL AND NATURAL HISTORY SURVEY OP CANADA. 



acute or short-pointed, auricled, not plicate nor reflexed on the bordei-s, 

 entire or slightly denticulate at the apex ; upper cells long and narrow, 

 the alar very distinct, quadrate, inflate and hyaline ; costa very short 

 thick and simple, or none. Capsule curved ; lid short, conical ; pedicel 

 smooth. Monoecious. 



Differs from P. denticulatum principally in the smaller crowded 

 leaves and their areolation. 



On stones in McKay's woods, Ottawa, Ont., May 21st, 1 885. {Macmn.) 



(813.) P. aciculari-pungens, C. M. & Kindb. (n. sp.) 



Dioecious. Tufts dense, radiculose, depressed, glossy green. Stem 

 irregularly divided ; branches few and short, not attenuate. Leaves 

 concave, open-orect or patent, decurrent, entire, ovate-oblong with a 

 short needle-shaped, recurved or patent point ; margins narrowly 

 recurved below to the middle at one side ; areolation uniform and 

 dilated ; the angular cells large and not numerous, sub-rectangular ; 

 costa none or indistinct. Capsules not found. Habit of Plapothecium 

 Sullivantioe. 



This species is nearly allied to Plagiothecium sylvaticum, but the 

 leaves are smaller, the tufts more compact, &c. 



On earth, Canaan Forks, Queen's Co., N.B., 1889. (J. Moser.) 



(814.) P. undu latum, Bruch & Schimp. Bryol. Europ. 



Hypnum vndulatum, Linn. ; Lesq. & James, Mosses of N. America, 369 ; 

 Canadian Musci, No. 314. 



Abundant on logs in woods at Hastings, B.C. ; also common at 

 Comox, Vancouver Island. (Macoun.) On logs. Queen Charlotte 

 Islands ; also on logs, Battledown Island, Gulf of Georgia, B.C. 

 (JDawson.') Sitka. (Both. Alask.) Sitka and Prince of Wales Island, 

 Alaska, 1891. (J. M. Macoun.) 



127. AMBLYSTECIUM, Schimp. 

 (815.) A. minutissimum, (Sulliv. «& Lesq.) 



Hypnum mmulisgimum, Sulliv. & Lesq. ; Lesq. & James, Mosses of N. 

 America, 371 ; Canadian Musci, No. 541. 



On rocks, North Hastings, Ont. ; on earth at the outlet of Lake 

 Louise, Eocky Mountains ; also on earth at Eevelstoke, Columbia 

 Eiver, B.C. (Macoun.) 



