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When a taxus displays one or some characters differing from those given in diagnoses, the name is followed by a question mark.

When the generic name of a taxus is followed by “sp.”, this means that I was unable to propose a specific name.

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Achnanthes brevipes var. intermedia (Kützing) Cleve
Achnanthes delicatula (Kützing) Grunow
Achnanthes lanceolata (Brebisson) Grunow
 
Amphora graffeana Hendey
Amphora ovalis Kützing
Amphora pediculus Kützing
 
Ardissonia crystallina (C.A. Agardh) Grunow
Aulacoseira ambigua (Grunow) Simonsen
Aulacoseira granulata (Ehrenberg) Simonsen
 
Caloneis aemula (Grunow ex A. Schmidt )Cleve
Caloneis alpestris (Grunow) Cleve
Caloneis sp.
Caloneis ventricosa (Ehrenberg) Meister
 
Cocconeis placentula Ehrenberg
Cocconeis pseudomarginata Gregory
 
Coscinodiscus lacustris Grunow
Cyclotella meneghiniana Kützing
Cymatopleura elliptica (Brebisson) W. Smith
Cymatopleura solea (Brebisson) W. Smith
 
Cymbella prostata (Berkeley) Cleve
Cymbella tumida (Brebisson) Van heurck
Cymbella ventricosa Kützing
 
Diploneis oculata (Brebisson) Cleve
Diploneis ovalis (Hilse) Cleve
Diploneis smithii (Brebisson) Cleve
 
Fragilaria brevistriata Grunow
Fragilaria pinnata Ehrenberg
Fragilariopsis sp.
Gyrosigma acuminatum (Kützing) Rabenhorst
Gyrosigma nodiferum (Grunow) Reimer
Luticola goppertiana (Bleisch in Rabenhorst) D.G. Mann in Round et al.
 
Navicula gracilis Ehrenberg
Navicula gregaria Donkin
Navicula radiosa var. tenella (Brebisson in Kützing) Van Heurck
Navicula sp.: 2 taxa
Navicula trivialis Lange-Bertalot
 
Nitzschia filiformis (W. Smith) Van Heurck
Nitzschia hantzschiana Rabenhorst
Nitzschia inconspicua Grunow
Nitzschia intermedia Hantzsch
Nitzschia liebetruthii Rabenhorst
Nitzschia parvula W. Smith
Nitzschia sp.
Nitzschia tryblionella Hantzsch
 
Rhoicosphaenia curvata (Kützing) Grunow
Staurosira construens Ehrenberg
Surirella ovata var. pinnata W. Smith
 
Synedra acus Kützing
Synedra tabulata (Agardh) Kützing
Synedra vaucheriae Kützing