230 



SOME NOVA SCOTIAN AQUATIC FUNGI. MOORE. 



oogonium, are centric in structure 

 and measure from 30-35/u in 

 diameter. Antheridial branches 

 are rarely absent, generally two 

 or three arising from the filament 



a short distance below the basal 

 wall of the oogonium. These are 

 often branched. Antheridial 

 branches from adjacent filaments 

 not infrequently attach themselves 



to an oogonium, The antheridia are almost cylindrical or 

 slightly clavate, comparatively long. 



This species is the largest and most striking of the Achlyas 

 observed and, in the vicinity of Sydney, is apparently one of 

 the most common. It also appeared in material collected in a 

 pool on the "Barren" near Pictou, N. S. The filaments are 

 unusually stout in vigorous cultures, sometimes reaching 140//- 

 in diameter at the base, and at times attaining a length of 

 .almost 2 cm - This species appears to be more sensitive than 



