CATALOGUE OF CANADIAN PLANTS. 197 



smooth, small, quadrate or short-rectangular and incrassate in the 

 upper part, becoming narrowly linear and slightly porose toward 

 the base near the costa, the alar looser, subrectangular. Perichae- 

 tial leaves from an oblong sheathing base suddenly long-cuspi- 

 date. Fruit unknown. Seems dioecious. 



Seems to have some affinities with D. elongatum Schw., but is 

 readily distinguished at first sight from this species by its leaves 

 being crisped in a dry state, which gives it ratiier the appearance 

 of D. montanum, Hedw., and also by the very different areolation 

 of the leaves. 



Rattler's Bight, Labrador, 1892. (Waghorne?) 



976. D. trachyphyllum, REN. & CARD., Botanical Gazette, Vol. 

 XXII. p. 48. 



Dioecious, Cespitose, green or olivaceous. Stems erect ; 

 2-6cm. long, simple or branching, sparingly tomentose in the 

 lower part. Leaves falcate or flexuous-patent when moist, flexu- 

 ous-crisped when dry, often tufted, linear-lanceolate, canaliculate 

 above and rather thickly subulate, strongly serrate on the margins, 

 spinulose-dentate at apex ; costa stout ; about one-fourth of' the 

 width of leaf-base, generally very rough at back, percurrent or 

 short-excurrent into a spinulose-dentate point ; cells of the upper 

 part quadrate or subrotundate, mostly papillose on the back, 

 oblong or linear and smooth toward the base, the alar lax, inflated 

 or hyaline. Perichetial leaves from an oblong sheathing base 

 constricted into a long subula ; costa narrower. Pedicels pale, 

 at last twisted to the left above when dry. Capsule and peris- 

 tome as in D. fuscescem. 



Closely allied \.Q D. fuscescens, Turn., to which it might be sub- 

 ordinated as a sub-species, but nevertheless easily distinguished 

 by the leaves being more strongly serrate, very rough on the back, 

 less narrowly subulate and the nerve thicker and broader. 



Leading Tickle and Hermitage Bay, Newfoundland, 1893 and 

 1895. (Waghorne.) 



103. D. Muehlenbeckii, BRUCH & SCHIMP. 



On stumps at Fox River, Gaspe Co., Que., Aug. 3rd, 1882 ; on 

 roots of trees, Lake Nipissing, Ont. Both these specimens were 

 referred to D. fuscescens in Part VI., 29 ; on earth along Jumping 

 Pound Creek, Rocky Mountains, 1897. (Macoun?) Growing 



