108 Rhodora [June 
ANKISTRODESMUS FALCATUS TUMIDUS (W. & G. S. West) G. S. West. 
Rare. Eagle Pass Mountains: in a rivulet at 6000 feet. 
BULBOCHAETE VARIANS SUBSIMPLEX (Wittr.) Hirn. Selkirk Moun- 
tains: rare; in scum of pools in the pass at the head of Quartz Creek, 
6500 feet. 
CHAETOPHORA ELEGANS (Roth) Ag. Selkirk Mountains: on sticks 
in a small stream tributary to Quartz Creek, at 3000 feet. 
CHLAMYDOMONAS NIVALIS (Baur) Wille. Eagle Pass Mountains: 
forming patches of “ Red Snow” at 7000 feet. As nearly as could be 
told from preserved material, the cells which gave rise to the red color 
were of this species. Without living material the determination is of 
course open to question. It was associated with Chionaster nivalis. 
DicryOSPHAERIUM EHRENBERGIANUM Naeg. Eagle Pass Moun- 
tains: in a rivulet at 6000 feet. 
Microspora sp. Selkirk Mountains: in puddles among rocks above 
the head of Fish Lake an undetermined Microspora formed large masses. 
MOUGEOTIA CALCAREA (Cleve) Wittr. Selkirk Mountains: in the 
valley below the Asulkan Pass at 5000 feet and beside the Cascade 
Summit Trail, in small pools among rocks, 5500 feet. Sparingly 
fruiting, but because of its variability in the position of the zygospores 
and the very few localities known for it in North America, a very 
interesting find. 
MovcEoriA PARVULA Hassall. Eagle Pass Mountains: abundant 
in fine fruit in a pond at 6000 feet. 
MouGeot!a was represented in sterile condition very frequently in 
all districts visited, and the measurements of the filaments indicated 
the presence of species considerably different from the above. 
Oocysris LACUSTRIS Chodat. Eagle Pass Mountains: frequent, 
entangled among filamentous algae in a rivulet at 6000 feet. 
Oocvsris SOLITARIA Wittr. Frequent among other algae. Eagle 
Pass Mountains: cliffs by Jordan Creek below the Falls, 2000 feet. 
Selkirk Mountains: wet rocks above the head of Fish Lake at 5200 
feet and in pools in the pass at the head of Quartz Creek at 6500 feet. 
OocYsTIS SOLITARIA MAJOR Wille. Selkirk Mountains: occasional 
among other algae. Cascade Summit trail and valley below the Asul- 
kan Glacier, 5500 and 5000 feet respectively. 
PEDIASTRUM BORYANUM (Turp.) Menegh. Selkirk Mountains: oc- 
casional among other algae. In the valley below the Asulkan Glacier 
at 5000 feet and in a pool east of the Quartz Creek valley at 6700 feet. 
PEDIASTRUM BORYANUM LONGICORNE Racib. Rare, among other 
algae. Eagle Pass Mountains: in a rivulet at 6000 feet. Sel- 
kirk Mountains: in a pool east of Quartz Creek valley at 6700 feet. 
PEDIASTRUM TRICORNUTUM ALPINUM Schinidle*. Eagle Pass Moun- 
3 Schmidle, W. Beiträge zur alpinen Algenflora. Oecsterr. Bot. Zeit. 45: 245-253. 
1895. 
