6 E Canadian Arctic Expedition, 1918-18 



Family GRIMMIAGEAE. 

 Genus Rhacomitrium Brid. 

 Racomitrium hypnoides (L.) Lindb. 



Tundra at cape Barrow, Coronation gulf, Northwest Territories, Aug. 6, 

 1915, J. J. O'Neill. On basalt outcrop at mouth of "Mackenzie river" (of Dr. 

 Rae), Victoria island, Northwest Territories, Canada, March 29, 1916. 



Family ORTHOTRICHACEAE. 



Genus Orthotrichum Hedw. 

 Orthotrichum Killiasii C.M. 



Harbour island, Bernard harbour, Northwest Territories, June 10, 1916 

 and tundra at Bernard harbour, Northwest Teiritories, June, 1916; fruiting. 

 From dolomite rock cliff, at mouth of "Mackenzie river," (of Dr. Rae) south 

 shore of Victoria island, Northwest Territories, March 29. 1916. On boulders 

 at Bernard harbour, Northwest Territories, June, 1916. "Uluksoq's island," 

 Bernard harbour, Northwest Territories, June 12, 1916. Bernard harbour, 

 Northwest Territories, June 11, 1915; fruiting. Cape Barrow, Coronation gulf , 

 Northwest Territories, Aug. 1915, R. M. Anderson. 



Family SPLACHNACEAE. 

 Genus Tetraplodon B.S. & G. 

 Tetraplodon bryoides (Zoeg.) Lindb. 



Bernard harbour, Norhwest Territories, July 3, 1916. Tundra at Collinson 

 point, Alaska, June 3, 1914. Tundra at Young point, Northwest Territories, 

 July 21, 1916. The specimens all fruiting. 



Genus Haplodon R. Br. 

 Haplodon Wormskjoldii (Hornem.) R. Br. 



Creek bed at Bernard harbour, Northwest Territories, July 9, 1915. 

 Bernard harbour, Northwest Territories, July 3, 1916. All in fruit. 



Family BRYACEAE. 

 Genus Leptobryum (B.S. & G.) Wils. 

 Leptobryum pyriforme (L.) Wils. 



On boulders, Sadlerochit river, about 30 miles inland from Camden bay, 

 Alaska, Nov. 13, 1913; fruiting. 



Genus Bryum Dill. 

 Bryum pendulum (Hornsch.) Sch. 



Creek bed at Bernard harbour, Northwest Territories, July 9, 1915; 

 fruiting. 



Bryum arcticum (R.Br.) B.S. & G. Bry. Eur. 



Island near Cockburn point, Dolphin and Union strait, Northwest Terri- 

 tories, July 15, 1916. Probably the same; tundra at Young point, Northwest 

 Territories, July 21, 1916. Both in fruit, but the latter with capsules infected 

 by a fungus. 



