292 GEOLOGICAL SURVEY OF CANADA. 



between. Seta rough throughout, up to i cm. high. Smooth 

 spores up to •on mm. 



On rock at Dawson, Yukon. In good fruit, June 24th, 1898. 

 This species is evidently nearest to suberythrorrhizon but differs 

 in the rough pedicel, leaves narrower, less serrate and plicate, 

 and cilia appendiculate. (IVt/Ziams.) 



120. SCLEROPODIUM, Schimp. 



754. S, csespitosum. (VVils.) Br. & Sch. 



On rocks, Drew's Harbour, Vancouver Island, 1885. (D/'. G.M. 

 Dawson.) On rocks, Lake Athabasca, S^-pt., 1875. {Macoun.) 



"757. S. illecebrum, (Linn.) Br. & Sch. 



On rocks in Pier's woods, near Victoria, Vancouver Island, May 

 8th, 1893 ; on wet rocks, Agassiz, B.C., May 8th, 1889 ; the latter 

 specimen was referred in Part VI., p. "202 to 6". obtusifolmm by 

 Kindberg. (Macoun.) 



1153. S. colpophyllum, (SuLLiv.) Grout. 



Cedar Hill, near Victoria and on the bases of trees near Esqui- 

 malt, Vancouver Island, 1893; also a doubtful specimen (named 

 by Kindberg) at Otter Lake Creek, Algonquin Park, Ont., July 

 19th, 1900. (Macoun) 



Var. attenuatum, Grout. 



Stoloniferous, much more slender, with more distant, loosely 

 spreading leaves ; leaves much narrower with a longer and more 

 slender acumination ; branch leaves varying from 17 x 0*54 mm. 

 on the longer branches to i x 0*2 on the smaller. 



Type from perpendicular rocks at Goldstream, near Victoria, 

 Vancouver Island, June 2nd, 1893. {Macoun) I have followed 

 Dr. A. J. Grout in the arrangement of the specimens of this genus. 

 See his revision of the North America species of Scleropodium 

 in the Contributions of the Department of Botany of Columbia 

 University, No. 165. 



121. ISOTHECIUiM, Brid. 



1154. I. brachycladon, Kindb., Bryol. N. Am. & Eur. 35. 



Differs from /. aplocladum : Leaves smaller ; those of the stem 

 subovate, nearly entire, with very short or indistinct costa; branch- 



