Freshwater Algae 



9 A 



AUska. 



Arctic 

 Canada 

 visited 

 by the 

 expe- 

 dition. 



Green- 

 land. 



Faeroes. 



United 

 States 



exclusive 

 of 



Alaska. 



CHLOROPHYCEAE— Continued. 



Enleromoi pha intestinalis 



Prasicla crispa 



Schizogonmm mmale 



Ulothrix ienemma 



" taridbilis 



Microspora stagnorum 



Drapamaldia glomeraia 



Zygnema eMHnum 



Spvogyra inflaia 



" inaignis 



Cylindrocysii^ crassa 



Penium cruciferum 



" margaritaceum 



" spircsiriolaium 



Closierium Comu 



" Dianae 



" didymoctocum 



" " var. siriatum... 



" Jenneri 



" moniliferum 



" poTvulum 



" Tostralam 



" aetaceum 



" striolalam 



" Venus 



Pleurotaenium Trdbeculo f . clavata 



" Iruncaium 



Evaslrum ansatum 



" bidenialum 



" binale 



" dentieulatum '. 



" dubium 



" elegans 



" oblongum 



" ocddeniale 



Micrasteriai apiculala 



" " vai.brachyptera 



Cosmarium asphaeroaporum 



" " var . slrigosum . 



" hinum 



" Bolrytia 



" conspersum 



" coniractum var. ellipsoideum.. 



" costatwm 



" crenatum 



" Cucumis 



" Cucurbita var. attentiatum 



" cyclicum var. Nordstedtianum 



" globosum 



" granatum 



" Hammeri 



" Holmiense var. integrum 



" humile var. siriatum 



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mconsptcuum 



margariiatum 



oehthodea 



Pokornyanum ; 



punctvlatum 



" var. aubpanciul- 

 atum 



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