Observations on Cocconeis placentula var. euglypta
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Cocconeis placentula var. euglypta (Ehrenberg) Cleve 1895
Most likely ID: n.a.
Basionym: Cocconeis euglypta Ehrenberg 1854
Add’l Synonyms: Cyclotella lineata var. euglypta Gutwinski 1895
Scale bars indicate 25 µm.
Two images.
| First: | Upper valve without raphe. |
| Second: | Lower valve with raphe that allows a slow change of position. |
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: Tropical freshwater aquarium
Latitude: 54.3018013 Longitude: 10.07120132
Microscope Zeiss Axioplan, camera Olympus OM-D M5 MKII. DOF images.
Scale bars indicate 25 µm.
Three images. Two states of sexual reproduction generating auxospores.
| First: | Early state (arrow). |
| Second: | Later phase of another couple (arrow). The epivalvae are opened, the cell plasmas have united. Optical cross section, the focal plane is near the hypovalvae. |
| Third: | Same phase. The focal plane is higher, the epivalvae become visible. |
UV = upper valve, LV = lower valve.
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: Tropical freshwater aquarium
Latitude: 54.3018013 Longitude: 10.07120132
Microscope Zeiss Axioplan, camera Olympus OM-D M5 MKII. DOF images.
Scale bars indicate 25 µm.
Three optical cross-sections through a fully developed auxospore.
| First: | Top view showing chloroplasts. |
| Second and third: | The nucleus is visible. |
| Fouth: | The focal plane is on the hypovalae. |
Chl = chloroplast, N = nucleus, UV = upper valve, LV = lower valve.
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: Tropical freshwater aquarium
Latitude: 54.3018013 Longitude: 10.07120132
Microscope Zeiss Axioplan, camera Olympus OM-D M5 MKII. DOF images.
© 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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New items
divergens
ocellatus
depressum
spec.
flava
lacustris
scintillans
ampulloides
clarkii
infusionum
uvella
botrytis
vlkii
desaedeleeri
exilis
pellucidum
siderotheca
frequentissima
elongata
volvox
aspera
ruttneri
truncata
globulosa
urceolata
proteus
vaginicola
pellucidum
buetschlii
trichophorum
acinus
fusiformis
helianthica
mutabile
ringens