W, WEST AND G. S. WEST : AI.OA-FLORA OF YORKSHIRE. 229 



elegantissimum, Cosmaiium ... 

 elliptica, Cymatopleura 



Naviciila ... 



Oocystis ... 



ellipticum, Cosmarium 

 elobatum, Euastrum 

 elongata, Anabfiena ... 

 elongatum, Diatoma 

 Encyonema, Genus ... 

 endivi-efolia, Chi>ftophora 

 Endlicherianum, Mesoticnium 

 Endosphi^reiie, Sub-Family ... 

 enonne, Tetraedron... 

 en.siforme, Characium 

 Enteromorpha, Genus 

 Epithemia, Genus ... 

 Epithemiefe, Family 

 Eremosphi'era, Genus 

 ericetorum, Zygnema 

 erosum, Cosmarium... 

 Euastrum ... 



Etchachanense, Cosmarium ... 



Euastrum, Genus 



EuchroococcaceK, Sub-Family 



Eudorina, Genus 



Eunotia, Genus 



excavatum, Cosmarium 

 Sphserozosma 



exigua, Eunotia 



exiguum, Penium 



exilis, Achnanthes ... 



Dactylococcus 



Navicula 



Faba, Eunotia 

 falcatum, Rhaphidum 

 famelica, Synedra 

 fasciculata, Nitzschia 



Synedra ... 



fasciculatum, Xanthidium 67 

 fastigiatum. Stigeoclonium 

 fenestrata, Tabellaria 

 figuratum, vScytonema 

 filiforme, Onychonema 

 liml^riata, Micrasterias 



firma, Navicula 

 flaccida, Tolypothrix 

 flaccidus, Stichococcus 

 flavescens, Cladophora 



CEdogonium 



Spirogyra 



flavicans, Rhizoclonium 

 flexellum, Achnanthidium 

 flexuosa, Eunotia 

 floccosa, Microspora 

 flocculosa, Tabellaria 

 Floridere, Class 



