MAcouN.] CATALOGUE OP CANADIAN PLANTS, 173 



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.) 



109. PYLAISIA, Bruch & Schimp. 



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

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



Hypnurn'jyolyanthos, Drumm. Muse. Bor.-Am., No. 222. 



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

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

 {Hay.) 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, N.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 N. 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., 1875. (Macoun.) On trees along the Clearwater 

 Eiver, N.W.T., lat. 57°. (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 



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