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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crassa
digitus
var. lamellosum
digitus
var. latum
oblongum
interruptum
spec.
spec.
kinahanii
spec.
polymorphum
var. polymorphum
spec.
spirostriolatum
digitus
brebissonii
rotata
swartzii
capitulum
antilopaeum
neosinuosum
brebissonii
pachydermum
thomasiana
var. notata
ansatum
forficulatum
var. verrucosum
neodepressum
armatum
oblongum
porteanum
truncata
rhomboidale
furcatum
uncinatum
dissiliens
pseudonitidulum
var. validum
truncata
var. bahusiensis
bidentatum
hirsutum
cucurbitinum
minor
pyramidatum
truncata
var. quadrata
binale
var. gutwinskii
inconspicuum
borreri
americana
quadratulum
trabecula
var. elongatum
coeseli
margaritacaeum
bicuneatum
apiculata
simplicius
crenulatum
crassum
simonyi
var. sparsiaculeatum
caelatum
crux-melitensis
sparsepunctatum
ehrenbergii
didelta
spongiosum
var. perbifidum
connatum
denticulata
subarctoum
trabecula
var. trabecula
humerosum
teliferum
dejectus
spec.
conspersum
komarekii
papillifera
arboricola
venustum
var. excavatum
viridis
pulchellum
tripus
granulatus
var. granulatus
subspicatus
humerosum
var. affine
nostochinearum
convergens
arcuata
integrum
aureus
rotata
lunaris
grevillei
lunatus
alternans
irregularis
laevis
var. laevis
ehrenbergianum
luetkemuelleri
var. carniolicum
reticulatum
tetras
limneticum
viridis
cystozygote
tetrachotoma
simplex
var. sturmii
biradiatum
microporum
var. octaedricum
braunii
reinhardtii
pusillum
lacustris
speculum
diaphanum