308 GEOLOGICAL SURVEY OF CANADA. 



Subgenus IV.-SHYTIDIUM, SuUiv. 



866 . H rugosum, Linn. 



Fort Chimo, Ungava Bay, Labrador, Aug., 1896. (A. P. Low.)' 

 On Pike's Portage, Great Slave Lake, May, 1900. (/. W. Tyrred.) 

 Lake Marsh, and Mile's Canon, sterile specimens abundant, Daw- 

 son ; fruit not rare. (Williams.) 



Subgenus V.— CTENIUM, Sulliv. 



867. H. crista-castrensis, Linn. 



Lake Lindeman and Klondike River bottom. Not found in' 

 fruit. {Williams.) 



Subgenus VL- CTENIDIUM, Hedw. 



1180. H. molluscoides, KiNDB., Revue Bryol. 1895. 



Leaves nearly entire, distinctly decurrent ; alar cells somewhat 

 large, well-defined. Capsule small, cylindric, arcuate. Other- 

 wise like H. molluscum, Hedw. 



On logs, Bay Bull Arm, Newfoundland. ( Waghorne.) On old. 

 logs, Baddeck, Cape Breton Island, N.S., July 9th, 1898. {Macoun.) 



1181. H. Alaskse, Kindb., Bryol. N. Am. & Eur. 142. 



Leaves entire, sub-decurrent, gradually acuminate ; alar cells 

 large, hyaline well-defined. Capsule subovate or arcuate ; pedicel 

 short. Tufts green or pale yellow. Stem creepiigsubpinnate or 

 plumiform. 



On old logs, Newfoundland. {Wagkor?ie.) On trees, Canaan 

 Forks, Queen's Co., N.B., Oct., 1894. (J. Moser.) 



Subgenus VIL— DREPANIUM, C Muell. 



1182. H. reptiliforme, Kindb., Revue Bryol. 1895. 



Differs from H. reptile ; leaves larger, long-acuminate ; those 

 of the stem ovate-oblong, denticulate above, those of the branches 

 ovate-lanceolate, denticulate all around; alar cells large hyaline. 

 Capsule pale yellow ; segments yellow ; lid not seen ; pedicel 

 longer. 



On the bases of trees in woods, Brighton, Northumberland Co., 

 Ont., Oct. 13th, 1893. {Macoun) 



