APR 10 1817, 



THE OTTAWA NATURALIST. 



Vol. XI. OTTAWA, FEBRUARY, 1898. No. 11. 



THE CRYPTOGAMIC FLORA OF OTTAWA. 



By Prof. John Macoun, M.A., F.L.S., F.R.S.C. 

 Continued from December No. 



163. R. pseudo-serrulatum, Kindb. 



Leaves ovate or ovate-oblong, minutely denticulate, striate and 

 chlorophyllose, not or indistinctly decurrent ; cells lanceolate, the 

 lower shorter and more dilated ; costa thin, vanishing above the middle. 

 Stem leaves, short-acuminate or filiform-pointed ; branch-leaves with 

 short subulate sometimes twisted point. Capsule arcuate ; lid apicu- 

 late J ])edicel rough very long. Stem subpinnate .or irregularly divided, 

 'i'ufts dark green, faintly, glossy, radiculose at the base. Monoecious. 

 Habit of R. serrulatum. 



On earth and small stones in McKay's Woods near the lake, Oct. 

 i2th, 1889, 



164. R. serrulatum, (Fledw.) 



On earth in McKay's Woods, Sept. 6th, 1889. 



165. R, rusciforme, (Weis.) Schimp. 



Abundent on stones in the brook that discharges Kingsmere four 

 miles west of Chelsea, Que., Sept. 9th. 1889. 



Var. inundatum, Kindb. 



On rocks in the brook which discharges Kingsmere four miles 

 west of Chelsea, Que., Sept. 9th, 1889 ; on rocks in a brook discharg- 

 ing into Meeche's Lake, north of Chelsea, Que., Sept. 23rd. 1893. 



: LVI. THAMNIUM, Schimp. \ 



166. T. AUeghaniense (C. Muell.) Bruch and Schimp. 



In crevices of thick bedded limestone rocks near McKay's Lake 

 under ledges along the cliffs Rocklifte Park, April 22nd, 1896. 



LVIL PLAGIOTHECIUM, Schimp. 



167. p. Passaicense, Aust. 



On cedar stumps and trees in Dow's Swamp, Sept. 6th, 1889. 



