1924] Taylor,—Further Notes on British Columbia Algae 163 
Cafion and Spillamacheen watersheds. On a flooded rock by Cafion 
Creek in great abundance and the major element in the association. 
CoELOSPHAERIUM NAEGELIANUM Unger. Pools, parkland, Cafion 
Creek, scarce. 
CoELOSPHAERIUM KuTzINGIANUM Naeg. In a spring on Prairie 
Mountain, scarce. 
DICHOTHRIX GYPSOPHILA (Ktz.) B. & F. In a stream on the flank 
of Prairie Mountain, scarce; abundant in streams near Twin Falls 
and the Yoho River, Field. 
DICHOTHRIX ORSINIANA (Ktz.) B.&F. Abundant in rivulets on the 
east flank of Prairie Mountain. 
GLOEOCAPSA ALPINA (Naeg.) Brand. Rivulet, east side of Prairie 
Mountain, scarce. Among Trentepchlia and other algae, Yoho 
Valley, abundant. 
GLOEOCAPSA MONTANA Ktz. Frequent and widely distributed. 
Cafion and Spillamacheen watersheds. 
GLOEOTHECE Fusco-LUTEA Naeg. In parkland pools, Cañon 
Creek and Prairie Mountain. 
HAPALOSIPHON DELICATULUS W. & G. S. West. Among muck in 
pool, Parkland, Cafion Creek, scarce. 
HYPHEOTHRIX CALCICOLA (Ag.) Rabenh.? On rocks and in pools, 
Cafion Creek and Prairie Mountain. 
MERISMOPEDIA GLAUCA (Ehrb.) Naeg. Pools, parkland, Cafion 
Creek and Prairie Mountain, frequent in some spots. 
MERISMOPEDIA PUNCTATA Meyen. Pcols, parkland, Cañon Creek 
and Prairie Mountain, scarce. 
NopuLARIA HaRvEYANA (Thw.) Thuret? Among moss in a pool, 
parkland, Cafion Creek. 
Nostoc CAERULEUM Lyngb. Among muck in parkland pool, 
Cafion Creek, scarce. 
Nostoc COMMUNE Vauch. Frequent and generally distributed. 
In Duchesnay Lake, near Field, in large masses. 
Nostoc MacRosPoRUM Menegh. In red surface mud from a dried 
pool, parkland, Cafion Creek. 
NosToc microscopricuM Carm. Frequent and widely distributed. 
Occasionally the major item in parkland pool muck. 
NosToc PUNCTIFORME (Ktz ) Hariot. In muck from banks of pools, 
Cafion Creek and Prairie Mountain, scarce. 
OsCILLATORIA AMOENA (Ktz.) Gom. Forming a blue-green coating 
