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, Skead's Farm, near Ottawa, May 15th, 1885, (Macoun.} 



IO9. PYLAISIA, Bruch & Schimp. 



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

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



Hypnum]polyanthos, Drumm. Muse. Bor.-Am., No. 222. 



Trunks of trees, stones and logs in woods. (Drummond.} On trees, 

 Bass Biver, KB. (Fowler's Cat.) On trees, Tobique Eiver, KB. 

 (Hay,} On the bases of trees at Canaan Forks and Tay, KB. (J. Moser.} 

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

 Campbellton, KB. ; on trees along the Gaspd 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 Biver ; on stumps at Morley and on stones at 

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

 Biver. K W.T. (J. M. Macoun.} Saskatchewan and Bocky Mountains. 

 (Bourgeau.} Near London, Ont. (J. Dearness.} 



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

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



On trees along Niagara Biver at the Whirlpool ; on trees, abundant 

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

 and at Yale, B.C., 1875. (Macoun.} On trees along the Clearwater 

 Biver, N.W.T., lat. 57. (J. M. Macoun.} Trunks of trees and stones 

 in various situations ; Bocky 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 



