XV 



A New Genus and Three New Species of Algae from 

 the Miramichi River, New Brunswick. 



(With 1 plate) 



BY 



A. Brooker Klugh, M.A. 

 Biological Department, Queen s University, Kingston, Canada 



During' the course of an ecolosical investigation of the algrae of the Miramichi 

 river, New Brunswick, unflertaken as part of a biological survey of this river by the 

 Biological Board of Canada, in May and June, 1918, the wi-iter collected some species 

 of Cyanophycoae which proved to he Undest-ribod. The diagnoses of these species, 

 and of the new g-enus which had to be estal)lished on account of the peculiarity of 

 one of these species, are presented in this paper. The full report on the algae of the 

 region will appear later in the report of the biological vsurvcy of the Miramichi. 



I wish here to express my gratitude to Dr. A. G. Huntsman, Curator of the Atlantic 

 Coast Bioloffical Station and chief of the party engaged in the survey of the Mira- 

 michi, for his kindness in furthering my work in every possible way. 



The diagnoses are as follows : — 



OLiGocLONiuif. Gen. nov. Strato mui'oso expanse. Trichomatibus cum pseudoranio- 

 sis sparsis. cum 1^3 cellulis multo minoribus positis ad intervalla. Trichomatibus 1 

 vel 2 intra vaginam. Vaginis hyalinis, lamelloeis. Cellulis diam, aequalibus vel 

 paulo longioribus. 



Oligoc'lonium inaequale. Sp. nov. Strato atro-olivaceo. Filamentis 18-25 micra 

 diam. Trichomatibus 8-9 micra diam. minime constrictis inter cellulas, fastigatis in 

 apicem. Vaginis 5-8 micra crassis, lamellosis, transverse rugosis. Cellulis princi- 

 palibus trichomatum 8-10 micra longis; cellulis minoribus 5 micra diam., et 6 micra 

 Ibngis. C'ontentu caeruleo-viridi, maxime granuloso. Trichomata fieri tendunt uibi 

 cellulis minoribus sunt adjuncta, et e vagina effugere. (Fig. 1.) 



Oligoclonium. New Genus. Plant mass forming an expanded mucous stratum. 

 Trichomes sparingly branched; having at intervals from one to three much smaller 

 cells. Trichomes single, or two, within the sheath. Sheaths colourless, lamellose. 

 Cells as long as, or slightly longer than, the diameter of the trichomes. 



This genus belongs to the order Hormogoneae, but occupies a peculiar systematic 

 position. It most nearly approaches the Family Oscillatoriaceae but is excluded from 

 that family, as at present defined, by the marked characteristics of possessing the 

 series of from one to three much smaller cells at intervals in the trichome and a 

 tapering filament, as the present definition of that family calls for a filament "uniform 

 throughout its entire length." Either the definition of the Family Oscillatoriaceae will 

 have to be changed to embrace this genus, or a new family, will have to be established 

 to receive it. Personally I feel inclined towards the former alternative. 



Oltgocf^onium inaequale. New Species. Plant mass dark olive-green. Filaments 

 18-25 micra in diameter. Trichomes 8-9 micra in diameter, very slightly constricted 

 between the cells, tapering at the apex. Sheaths 5-8 micra thick, lamellose, trans- 

 versely wrinkled. Main cells of the trichome 8-10 micra long; smaller cells 5 micra in 



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