W. WEST ANn G. S. WEST: ALGA-FLORA OF YORKSHIRE. 225 



ampla, Gla'ocystis ... 

 ampuliaceum, Euastrum 

 Anabtena, (Jenus 

 anceps, Cosmarium ... 



Diatoma 



Stauroneis ... 



anglica, Navicula ... 

 anguina, Oscillatovia 

 angulatum, Cosmarium 

 angulo.sum, Cosmarium 



Pediastnim 



angulosus, Pleurococcus 

 angusta, Mougeotia ... 



Surirella 



angustata, Navicula. . . 



Nitzschia... 



angustatimi, Closterium 



Cosmarium 



Gomphonema 



angustum, Closterium 

 anisochondrum, Cosmarium 

 anomalum, Zygnema 

 ansatum, Euastrum ... 

 antennatus, Scenedesmus 

 antiacerosum, Closterium 

 antilaria, Oscillatoria 

 antilopseum, Xanthidium 

 Aphanizomenon, Genus 

 Aphanocapsa, Genus 

 Aphanochtete, Genus 

 Aphanothece, Genus 

 a|3iculata, Cymatopleura 



Micrasterias 



Nitzschia . . . 



Surirella ... 



apiculatum, Staurastrum 

 Apiocystis, Genus ... 

 aponina, Gomphospheeria 

 appendiculata, Navicula 

 aptogonum, Desmidium 

 aquaticum, Zygnema 

 arl)u.scula, Ophiocytium 

 Arachne, Staurastrum 

 .■\rcherii, Cosmarium 

 arcticum, Staurastrum 

 arcuatum, Closterium 

 Arcus, Ceiatoneis ... 



Eunotia 



arenaria, Glceocapsa 



Melosira . . . 



arenulata, Melosira . . . 

 Argus, EiMthemia ... 

 aristiferum, Staurastrum 

 armatum, Xanthidium 

 armigerum, Staurastrum 

 Arnellii, Staurastrum 



132 



61 



142 



90 



203 



164 



173 



150 



69 



93 

 Ii6 



135 



32 



208 



172 



211 



54 



79 



186 



49 



76 



34 



62 



119 



S3 

 148 

 67 



143 

 156 



14 

 152 

 206 



66 

 212 

 208 



96 

 128 



I 5 

 169 

 no 



35 

 27 



108 

 80 



102 



49 



196 



192 



156 



217 



217 



191 



96 



67 



98 



103 



Arthrodesmus, Genus 

 Arthrospira, Genus ... 

 articulata, Echinella 

 asperum, Staurastrum 

 asphecrosporum, Cosmarium 

 Asterionella, Genus... 

 Astrtea, Cyclotella ... 

 asymmetrica, Oocystis 

 atrum, Batrachospermum 

 attenuata, Oscillatoria 

 attenuatum, Closterium 



Cosmarium 



Pleurosigma 



Augur, Gomphonema 

 aurea, Trentepohlia... 

 aureus, Urococcus ... 



Vol vox 



australianum, Cosmarium 

 autumnale, Phormidium 

 aversa, Vaucheria ... 

 Avicula, Staurastrum 

 Bacillariefe, Class ... 

 bacillaris, Stichococcus 



Navicula . . . 



bacillum, Navicula ... 

 baculum, Docidium... 

 Badense, Cosmarium 

 badio-purpureus, Chi oococcus 

 balearica, Calothrix . . . 

 barbata, Schrammia 

 Batrachospermece, Family 

 Batrachospermum, Genus 

 Beanlandii, Cosmarium 

 Biasolettiana, Achnanthes 



Rivularia 



bicapitala, Eunotia ... 



Navicula ... 



bicaudatus, Dactylococcus 

 bicolor. Conferva 

 bicornis, Gloeochsete 

 bicuspidatum, Ophiocytium 

 bidens, Eunotia ... 192 



bidentatum, Euastrum 

 bidentulum, Pediastrum 

 Bieneanum, Staurastrum 

 bifidus, Arthrodesmus 

 biforme, Cosmarium 

 bijugatus, Scenedesmus 

 bilobata, Nitzschia ... 

 bilunaris, Eunotia 

 binale, Euastrum 

 binodis, Fragilaria ... 



Navicula . . . 



bioculatum, Cosmarium 

 biplex, Rhaphidium... 

 biradiatum, Pediastrum 



