MACOUN.] CATALOGUE OF CANADIAN PLANTS. 51 



when dry, suberect and nearly straight when moist, not undulate, from 

 a thin ovate-oblong base attenuate, nearly sublinear, acute or suddenly 

 pointed, very papillose ; margins involute, cucullate above ; costa yel- 

 low pellucid, excurrent in an often denticulate point. Perichetial leaves 

 much broader and longer than the other, whitish, from a long lanceo- 

 late base subulate ; cells narrow, linear also above. Capsule narrow- 

 cylindric, nearly straight, suberect ; peristome long, several times 

 convolute. 



This species resembles rather the European Barbula inclinata 

 (Hedw. f.) than B. tortuosa, which has a larger capsule, longer leaves, 

 taller stems, &c. 



On earth and gravel on bars along old channels of the Illicillewaet, 

 near Eevelstoke, B.C.; fruiting abundantly, May 27th, 1890. (Macoun.) 



(189.) B. fragilis, Bruch & Schimp. ; Lesq. & James, Mosses of N. 

 America, 129 ; Canadian Musci, No. 78. 



Tortvla tortuosa, var. inclinata, Drumm. Muse. Bor.-Am., No. 142. 

 Didymodon fragile, (n. sp.), Drumm. Muse. Bor.-Am., No. 127. 



Dry mountain prairies ; upon the " Height of Land" in the Kocky 

 Mountains (142) ; margins of alpine lakes ; fruit very rare (127). 

 (Drummond.) Eiver du Loup (en bas) Que. (St. Cyr.) Eocks along 

 the bed of Ste. Anne des Monts Eiver, at the base of Mount Albert, 

 Gaspd Co., Que. ; abundant on the borders of marshy streams at Hector 

 and Banff, Eocky Mountains ; fruit very scarce. (Macoun.) North 

 Shore of Lake Superior. (Agassiz.) Disco, Greenland. (FL 6rr.) 



(190.) B. ceespitosa, Schwaegr. ; Lesq. & James, Mosses of N. 

 America, 129. 



On earth at the base of trees in woods at Belleville, and near the 

 " Big Swamp" Murray, and in Seymour West, Northumberland Co., 

 Ont. ; roots of trees, North Bay, Lake Nipissing. (Mdcoun.) 



(d.) EUBARBULA, C. Muell. 



(191.) B. Yah liana, Schultz ; Lesq. & James, Mosses of N. Ame- 

 rica, 117. 



On earth at Yale, B.C., May. 17th, 1875. (Macoun.) 



(192.) B. amplexa, Lesq. ; Lesq. & James, Mosses of N. Ame- 

 rica, 118. 



Tortula humilis, Drumm. Muse. Bor.-Am., No. 137. 

 Limestone rocks of Lake Winnipeg. (Drummond.) 



