A Key to the Genera of Marine Planktonic Diatoms of the Pacific Coast of North America |
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A Key to the Genera of Marine Planktonic Diatoms of the Pacific Coast of ... W. C. Vinyard No preview available - 1975 |
Common terms and phrases
Agardh apical appearing areolated ASTERIONELLA asymmetrical attached axial axis Bailey BIDDULPHIA blunt broad cell diameter cell wall Cells adjoined central central nodule CERATULINA CHAETOCEROS circular Cleve Cupp 1943 colonial CONNECTING conspicuous constricted convex copulae curved cylindrical definite diatoms distinct Ehrenberg elliptical elongate ends excentric extend flat forms FRAGILARIA FRUSTULE gelatinous genera girdle bands Girdle view Girdle zone GRAMMATOPHORA Gran Gran & Angst Grunow Cupp 1943 GUINARDIA half indistinct intercalary bands keel lacking lateral Length less LICMORPHA LONGITUDINAL margin marginal spinules markings median middle modified mounts narrow NITZSCHIA numerous otherwise outline parallel perpendicular plane polar present processes projections punctae radially Ralfs raphe rectangular RHIZOSOLENIA rounded Schütt secretions separated septa Setae short side sigmoid siliceous smooth sometimes species spine spinules STEPHANOPYXIS straight striae strongly structure tapered THALASSIONEMA THALASSIOSIRA THALASSIOTHRIX thickened thin TRANSAPICAL transverse undulating usually Valve surface valve view wall wedge-shaped width