198 The Ottawa Naturalist. [February 



199. H. reptile, Michx. 



Abundant on trunks of trees in woods around Ottawa. On trunks 

 "Pine Hill," Rockcliffe Park, April i4th, 1896 ; on old logs in Beech- 

 wood Cemetery and along the Aylmer Road, Oct. 12th, 1887. 



200. H. pallescens, Schimp. 



On limestone rocks on an old stone fence along the Aylmer Road, 

 near Tetreauville, west of Hull, Que., Sept. 24th, 1891 ; on boulders 

 along the road leading east from the end of the Electric Road, Rock- 

 cliffe Park, May 7th, 1896. 



201. H. Canadense, Kindb. 



On old logs and stones at Rockcliffe near the end of the Electric 

 Road, Rockcliffe Park, May 7th, 1886 ; on stones in woods west of 

 Hull, Que., Sept. nth, 1891 ; on rocks in Rockcliffe Park, Sept. 25th, 

 1889. 



202. H. fertile, Sendt. 



On old logs at Casselman, June nth, 1892. 



203. H. imponens, Hedw. 



Common on rotten logs around Ottawa, at Chelsea and Casselman. 



204. H. arcuatiforme, Kindb. 



Tufts dense, green, not glossy. Stem creeping, subpinnate. Leaves 

 arcuate, ovate-lanceolate, generally short-acuminate or sub-obtusate, 

 entire, decurrent, not striate ; alar cells large, well-defined, orange, the 

 other pale and narrow ; costa none or short and double. Capsule sub- 

 cylindric, curved, not striate nor furrowed, constricted below the wide 

 mouth ; teeth when dry incurved, pale-yellow, hyaline margined ; cilia 

 long, appendiculate ; pedicel about 3 cm. long. Probably dioecious. 

 Resembles in habit Hypnwn cupressiforme. Lid and male flowers not 

 found. 



The allied Hypnuin Lindbergii, Mitt. {H. arcuatmn^ Lindb.) 

 differs at once in the not creeping, irregularly divided stem, the shorter 

 pedicel, the larger capsule, &c. 



On earth near the gate of Beechwood Cemetery, Sept. 29th, \\ 



205. H. Renauldii, Kindb. 



Agrees with Hypnum curvifolium in the stem being more or less 

 pinnate, the inner basal leaf-cells finally vellow ; with Hypnum Ltnd- 

 bergii in the leaves being decurrent, alar cells very much dilated, the 

 capsule not plicate in a dry state ; differs from both in the entire leaves. 

 Hypnum pratense differs in the leaves not being striate nor decurrent, 

 and alar cells not evolute. 



