MAcouN.] CATALOGUE OF CANADIAN PLANTS, 17? 



generally longer than the linear-subuliform, hyaline-bordered and free 

 segments ; the branches of the stem are shorter and curved, only the 

 alar leaf cells orange. The figure given by Schimper and Lesq. & 

 James representing the peristome does not correspond with the speci- 

 mens. 



On old logs, Sijead's Farm, near Ottawa, May 15th, 1885. (Macoun.) 



I09. PYLAISIA, Bruch & Schimp. 



(652.) P. polyantha, Bruch & Schimp. ; Lesq. & James, Mosses of 

 N. America, 308 ; Canadian Musci, No. 260. 



Hypnum'jpolyanthos, Drumm. Muse. Bor.-Am., No. 222. 



Trunks of trees, stones and logs in woods. (Brummond.) On trees, 

 Bass Eiver, N".B. (Fowler's Oat.) On trees, Tobique Eiver, N.B. 

 (ffay.) On the bases of trees at Canaan Forks and Tay, N.B. (J. Moser.) 

 On trees, Eustico Bay, Prince Edward Island ; also on logs at 

 Campbellton, IT.B. ; on trees along the Gasp^ Coast, Que. ; on rotten 

 logs at Ottawa and Belleville, and on trees at Lake Nepigon, Ont. ; 

 on stumps and poplar trees in woods at Sydenham Falls, Owen Sound, 

 Ont. ; on the bases of aspen poplar trees throughout the prairie region 

 and northward to Peace Eiver ; on stumps at Morley and on stones at 

 Banff, Eocky Mountains. (Macoun.) On trees along the Clearwater 

 Eiver, N.W.T. (J. M. Macoun.) Saskatchewan and Eocky Mountains. 

 {Bourgeau.) Near London, Ont. (J. Dearness.) 



(653.) P. heteromalla, Bruch & Schimp. ; Lesq^ & James, Mosses 

 of JST. America, 308 ; Canadian Musci, No. 261. 



On trees along Niagara Eiver at the "Whirlpool ; on trees, abundant 

 at Edmonton and Lesser Slave Lake, also in the Peace Eiver district 

 and at Yale, B.C., 18Y5. (Macoun.) On trees along the Clearwater 

 Eiver, N.W.T., lat. 5*7° (J. M. Macoun.) Trunks of trees and stones 

 in various situations ; Eocky Mountains. (Drummond No. 222.) 



(654.) P. pseudo-platygyrium, Kindb. (n. sp.) 



Tufts intricate ; stems irregularly divided or subpinnate ; branches 

 thick. Leaves crowded, the upper glossy-green, the other finally 

 brown, from the ovate-oblong base long-acuminate with a sub-filiform, 

 often curved, distinctly denticulate acumen ; borders recurved to the 

 acumen ; cells narrow and confluent, except the quadrate alar ones ; 

 costa double, distinct. Perichetial leaves serrulate, abruptly narrowed 

 to the long, hairpoint-like acumen. Capsule straight, suberect, cylindric 



