Observations on Porosira glacialis
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Porosira glacialis (Grunow) Jørgensen 1905
Most likely ID: n.a.
Basionym: Podosira hormoides var. glacialis Grunow 1884
Add’l Synonyms: Podosira glacialis (Grunow) Cleve 1896
Lauderia glacialis (Grunow) Gran 1900
Melosira glacialis (Grunow) A.Cleve 1951
Porosira antarctica O.G.Kozlova 1962
Sampling date 04/2011. Scale bars indicate 100 µm (1), 50 µm (2, 3).
Three images.
First: | Long chain of Porosira glacialis. Note that the delicate spines of the Thalassiosirales are chitinous. |
Second: | Close-up. Focus on frustule surface. |
Third: | Focus on cell center showing cytoplasmic accumulation around the nucleus. |
Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!
Place name: North Sea around Heligoland
Latitude: 54.186311 Longitude: 7.895034
Microscope Zeiss Universal, camera Olympus C7070WZ. DOF images.
Scale bars indicate 50 µm.
Two images.
Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!
Place name: North Sea around Heligoland
Latitude: 54.186311 Longitude: 7.895034
Microscope Zeiss Universal, camera Olympus C7070WZ. DOF images.

Scale bar indicates 50 µm.
Place name: North Sea around Heligoland
Latitude: 54.186311 Longitude: 7.895034
Microscope Zeiss Universal, camera Olympus C7070WZ. DOF image.
© Wolfgang Bettighofer,
images under Creative Commons License V 3.0 (CC BY-NC-SA).
For permission to use of (high resolution) images please contact postmaster@protisten.de.
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teliferum
pseudopyramidatum
pyramidatum
scabrum
capitulum
forficulatum
oligacanthum
var. incisum
chlamydosporum
arcuatum
var. subavicula
truncata
var. quadrata
rubescens
venustum
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ralfsii
var. montanum
ralfsii
digitus
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intermedium
dissiliens
kuetzingii
ralfsii
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aureus
botrytis
quadratum
quadrum
crassa
digitus
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kinahanii
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