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Protisten.de
Tiny Organisms in Aquatic Habitats
Protisten.de
Tiny Organisms in Aquatic Habitats
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Proteobacteria
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and Chlorobi
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Golden-brownish-
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Green-colored
Algae (1)
Green-colored
Algae (2):
Desmids sensu lato
Reddish-colored
Algae
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Flagellate Organisms
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Colored Flagellates
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Saccamoeba limax
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Testate Amoebae
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Pyxidicula operculata
as a Neuston Organism
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Heliozoic Amoebae
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Defecation in
Nuclearia
spec.
Nuclearia delicatula
, a Multinucleated Organism
Cell Division in
Nuclearia simplex
Raphidocystis pallida
as Neuston Member
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Chlorophytes
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Chlorella
spec. as Zoochlorellae
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Streptophytes (Desmids)
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Mitochondria in
Micrasterias
Dictyosomes in
Micrasterias
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Ciliates
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Fine Structure of
Coleps hirtus
Carapace
Platycola longicollis
on Java Moss
Binary Fission in
Vorticella
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Diatoms
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Sexual Reproduction of
Melosira lineata
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Cnidaria
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Fine Structure of
Hydra viridissima
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Ptygura kostei
on Java Moss
Ptygura longicornis
on Java Moss
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Proteobacteria
Cyanobacteria and Chlorobi
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Algae without Flagella
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Other Golden-brownish-colored Algae
Green-colored Algae (1)
Green-colored Algae (2): Desmids sensu lato
Reddish-colored Algae
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Flagellate Organisms
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Colored Flagellates
Colorless Flagellates
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Amoeboid Protists
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Naked Amoebae
Testate Amoebae
Heliozoic Amoebae
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Ciliates
Diatoms
Heliozoa
Metazoa
Organisms grouped by Taxonomy
Extended Observation Descriptions
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Amoeboid Protists
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Naked Amoebae
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Saccamoeba limax
Hunting for
Pyxidicula
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Testate Amoebae
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Pyxidicula operculata
as a Neuston Organism
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Heliozoic Amoebae
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Defecation in
Nuclearia
spec.
Nuclearia delicatula
, a Multinucleated Organism
Cell Division in
Nuclearia simplex
Raphidocystis pallida
as Neuston Member
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Chlorophytes
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Chlorella
spec. as Zoochlorellae
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Streptophytes (Desmids)
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Mitochondria in
Micrasterias
Dictyosomes in
Micrasterias
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Ciliates
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Fine Structure of
Coleps hirtus
Carapace
Platycola longicollis
on Java Moss
Binary Fission in
Vorticella
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Diatoms
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Sexual Reproduction of
Melosira lineata
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Cnidaria
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Fine Structure of
Hydra viridissima
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Rotifers
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Ptygura kostei
on Java Moss
Ptygura longicornis
on Java Moss
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Colorless Flagellates –
Amoebozoa (Part), Cryptista (Part), Discoba (Part), Alveolates (Part), Stramenopiles (Part)
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Amoebozoa
--> Amoeboflagellates
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Evosea/Archamoebae
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Mastigamoeba aspera
Cryptophyceae
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Goniomonas truncata
Discoba
--> Euglenozoa
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Euglenozoa
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Spirocuta/Aphagea
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Distigma proteus
Menoidium pellucidum
Spirocuta/Euglenophyceae
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Phacus ocellatus
Spirocuta/Heteronematales
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Anisonema
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Anisonema
spec.
Anisonema acinus
Heteronema mutabile
Peranema trichophorum
Obazoa
--> Choanoflagellates
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Choanoflagellata
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Codosiga botrytis
Diploeca
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Diploeca elongata
Diploeca flava
Diplosigopsis siderotheca
Lagenoeca globulosa
Salpingoeca
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Salpingoeca
spec.
Salpingoeca ampulloides
Salpingoeca buetschlii
Salpingoeca clarkii
Salpingoeca desaedeleeri
Salpingoeca frequentissima
Salpingoeca fusiformis
Salpingoeca helianthica
Salpingoeca ringens
Salpingoeca ruttneri
Salpingoeca urceolata
Salpingoeca vaginicola
Sphaeroeca volvox
SAR-Stramenopiles
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Bigyra/Opalozoa/Bicosoecida
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Bicosoeca
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Bicosoeca exilis
Bicosoeca lacustris
Pseudodendromonas vlkii
Ochrophyta/Chrysophyceae/Chromulinales
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Anthophysa vegetans
Siderodendron manganiferum
Spumella
spec.
Spumella rivalis
Ochrophyta/Dictyochophyceae/Pedinellales
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Ciliophrys infusionum
SAR-Alveolata
--> Dinophyceae
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Dinophyceae/Noctilucales
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Noctiluca scintillans
Dinophyceae/Peridiniales
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Protoperidinium
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Protoperidinium depressum
Protoperidinium divergens
Protoperidinium pellucidum
SAR-Rhizaria
--> Cercozoa
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Cercozoa/Imbricatea/Spongomonadida
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Spongomonas
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Spongomonas
spec.
Spongomonas uvella
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All Items
Amoebozoa
--> Amoeboflagellates
Evosea/Archamoebae
Mastigamoeba aspera
Cryptophyceae
Goniomonas truncata
Discoba
--> Euglenozoa
Euglenozoa
Spirocuta/Aphagea
Distigma proteus
Menoidium pellucidum
Spirocuta/Euglenophyceae
Phacus ocellatus
Spirocuta/Heteronematales
Anisonema
Anisonema
spec.
Anisonema acinus
Heteronema mutabile
Peranema trichophorum
Obazoa
--> Choanoflagellates
Choanoflagellata
Codosiga botrytis
Diploeca
Diploeca elongata
Diploeca flava
Diplosigopsis siderotheca
Lagenoeca globulosa
Salpingoeca
Salpingoeca
spec.
Salpingoeca ampulloides
Salpingoeca buetschlii
Salpingoeca clarkii
Salpingoeca desaedeleeri
Salpingoeca frequentissima
Salpingoeca fusiformis
Salpingoeca helianthica
Salpingoeca ringens
Salpingoeca ruttneri
Salpingoeca urceolata
Salpingoeca vaginicola
Sphaeroeca volvox
SAR-Stramenopiles
Bigyra/Opalozoa/Bicosoecida
Bicosoeca
Bicosoeca exilis
Bicosoeca lacustris
Pseudodendromonas vlkii
Ochrophyta/Chrysophyceae/Chromulinales
Anthophysa vegetans
Siderodendron manganiferum
Spumella
spec.
Spumella rivalis
Ochrophyta/Dictyochophyceae/Pedinellales
Ciliophrys infusionum
SAR-Alveolata
--> Dinophyceae
Dinophyceae/Noctilucales
Noctiluca scintillans
Dinophyceae/Peridiniales
Protoperidinium
Protoperidinium depressum
Protoperidinium divergens
Protoperidinium pellucidum
SAR-Rhizaria
--> Cercozoa
Cercozoa/Imbricatea/Spongomonadida
Spongomonas
Spongomonas
spec.
Spongomonas uvella
Illustrated Key for
Colorless Flagellates – Flagellates without Chloroplasts
Amoebozoa – Evosea
Archamoebae/Mastigamoebida
Mastigamoeba
aspera
Mastigamoeba
aspera
Cryptista – Cryptophyceae
Cyathomonadacea/Goniomonadaceae
Goniomonas
truncata
Goniomonas
truncata
Goniomonas
truncata
Goniomonas
truncata
Discoba – Euglenozoa/Euglenida
Spirocuta/Aphagea
Distigma
proteus
Menoidium
pellucidum
Distigma
proteus
Menoidium
pellucidum
Spirocuta/Euglenophyceae (colorless part)
Phacus
ocellatus
Phacus
ocellatus
Spirocuta/Heteronematales
Anisonema
acinus
Anisonema
spec.
Heteronema
mutabile
Peranema
trichophorum
Anisonema
acinus
Anisonema
spec.
Heteronema
mutabile
Peranema
trichophorum
Obazoa – Opisthokonta
Choanoflagellata
Codosiga
botrytis
Codosiga
botrytis
Diploeca
elongata
Diploeca
flava
Diplosigopsis
siderotheca
Lagenoeca
globulosa
Salpingoeca
ampulloides
Salpingoeca
buetschlii
Salpingoeca
buetschlii
Salpingoeca
clarkii
Salpingoeca
de-saedeleeri
Salpingoeca
frequentissima
Salpingoeca
fusiformis
Salpingoeca
helianthica
Salpingoeca
ringens
Salpingoeca
ruttneri
Salpingoeca
spec.
Salpingoeca
urceolata
Salpingoeca
vaginicola
Sphaeroeca
volvox
Sphaeroeca
volvox
Codosiga
botrytis
Codosiga
botrytis
Diploeca
elongata
Diploeca
flava
Diplosigopsis
siderotheca
Lagenoeca
globulosa
Salpingoeca
ampulloides
Salpingoeca
buetschlii
Salpingoeca
buetschlii
Salpingoeca
clarkii
Salpingoeca
de-saedeleeri
Salpingoeca
frequentissima
Salpingoeca
fusiformis
Salpingoeca
helianthica
Salpingoeca
ringens
Salpingoeca
ruttneri
Salpingoeca
spec.
Salpingoeca
urceolata
Salpingoeca
vaginicola
Sphaeroeca
volvox
Sphaeroeca
volvox
SAR-Stramenopiles – Bigyra
Opalozoa/Bicosoecida
Bicosoeca
exilis
Bicosoeca
lacustris
Pseudodendromonas
vlkii
Bicosoeca
exilis
Bicosoeca
lacustris
Pseudodendromonas
vlkii
SAR-Stramenopiles – Ochrophyta
Chrysophyceae/Chromulinales (colorless part)
Anthophysa
vegetans
Siderodendron
manganiferum
Spumella
spec.
Spumella
rivalis
Anthophysa
vegetans
Siderodendron
manganiferum
Spumella
spec.
Spumella
rivalis
Dictyochophyceae/Pedinellales
Ciliophrys
infusionum
Ciliophrys
infusionum
SAR-Alveolata – Dinophyceae
Noctilucales
Noctiluca
scintillans
Noctiluca
scintillans
Peridiniales (colorless part)
Protoperidinium
depressum
Protoperidinium
depressum
Protoperidinium
divergens
Protoperidinium
pellucidum
Protoperidinium
depressum
Protoperidinium
depressum
Protoperidinium
divergens
Protoperidinium
pellucidum
SAR-Rhizaria – Cercozoa
Imbricatea/Spongomonadida
Spongomonas
spec.
Spongomonas
uvella
Spongomonas
uvella
Spongomonas
spec.
Spongomonas
uvella
Spongomonas
uvella
© Wolfgang Bettighofer 2023–2025
New items
Closterium
striolatum
Staurastrum
teliferum
Cosmarium
pseudopyramidatum
Cosmarium
pyramidatum
Staurastrum
scabrum
Staurastrum
capitulum
Staurastrum
forficulatum
Staurastrum
oligacanthum
var.
incisum
Mesotaenium
chlamydosporum
Staurastrum
arcuatum
var.
subavicula
Micrasterias
truncata
var.
quadrata
Difflugia
rubescens
Cosmarium
venustum
var.
excavatum
Cosmarium
ralfsii
var.
montanum
Micrasterias
ralfsii
Netrium
digitus
Closterium
acerosum
Closterium
intermedium
Hyalotheca
dissiliens
Closterium
kuetzingii
Closterium
ralfsii
var.
hybridum
Volvox
aureus
Cosmarium
botrytis
Cosmarium
quadratum
Cosmarium
quadrum
Cylindrocystis
crassa
Netrium
digitus
var.
lamellosum
Netrium
digitus
var.
latum
Netrium
oblongum
Planotaenium
interruptum
Spirogyra
spec.
Zygnema
spec.
Gonatozygon
kinahanii
Mougeotia
spec.
Penium
polymorphum
var.
polymorphum
Cylindrocystis
brebissonii
Micrasterias
rotata
Desmidium
swartzii
Xanthidium
antilopaeum
Euastrum
neosinuosum
Micrasterias
thomasiana
var.
notata
Staurastrum
forficulatum
var.
verrucosum
Xanthidium
armatum
Euastrum
oblongum
Euastrum
rhomboidale
Staurastrum
furcatum
Xanthidium
uncinatum
Staurastrum
hirsutum
Actinotaenium
cucurbitinum
Hyalotheca
minor
Bambusina
borreri
Micrasterias
americana
Euastrum
coeseli
Micrasterias
apiculata
Cosmarium
simplicius
Euastrum
crassum
Staurastrum
simonyi
var.
sparsiaculeatum
Cosmarium
caelatum
Micrasterias
crux-melitensis
Pleurotaenium
ehrenbergii
Euastrum
didelta
Staurastrum
spongiosum
var.
perbifidum
Micrasterias
denticulata
Staurodesmus
dejectus
Cosmarium
conspersum
Micrasterias
papillifera
Lemmermannia
komarekii
Trebouxia
arboricola
Cosmarium
venustum
var.
excavatum
Spondylosium
pulchellum
Goniochloris
tripus
Desmodesmus
subspicatus
Staurodesmus
convergens
Glaucocystis
nostochinearum
Raphidocelis
arcuata
Desmidium
grevillei
Tetmemorus
laevis
var.
laevis
Hydrodictyon
reticulatum
Eremosphaera
viridis
cystozygote
Chlamydomonas
reinhardtii
Haematococcus
lacustris
Octactis
speculum
New items
Closterium
striolatum
Staurastrum
teliferum
Cosmarium
pseudopyramidatum
Cosmarium
pyramidatum
Staurastrum
scabrum
Staurastrum
capitulum
Staurastrum
forficulatum
Staurastrum
oligacanthum
var.
incisum
Mesotaenium
chlamydosporum
Staurastrum
arcuatum
var.
subavicula
Micrasterias
truncata
var.
quadrata
Difflugia
rubescens
Cosmarium
venustum
var.
excavatum
Cosmarium
ralfsii
var.
montanum
Micrasterias
ralfsii
Netrium
digitus
Closterium
acerosum
Closterium
intermedium
Hyalotheca
dissiliens
Closterium
kuetzingii
Closterium
ralfsii
var.
hybridum
Volvox
aureus
Cosmarium
botrytis
Cosmarium
quadratum
Cosmarium
quadrum
Cylindrocystis
crassa
Netrium
digitus
var.
lamellosum
Netrium
digitus
var.
latum
Netrium
oblongum
Planotaenium
interruptum
Spirogyra
spec.
Zygnema
spec.
Gonatozygon
kinahanii
Mougeotia
spec.
Penium
polymorphum
var.
polymorphum
Cylindrocystis
brebissonii
Micrasterias
rotata
Desmidium
swartzii
Xanthidium
antilopaeum
Euastrum
neosinuosum
Micrasterias
thomasiana
var.
notata
Staurastrum
forficulatum
var.
verrucosum
Xanthidium
armatum
Euastrum
oblongum
Euastrum
rhomboidale
Staurastrum
furcatum
Xanthidium
uncinatum
Staurastrum
hirsutum
Actinotaenium
cucurbitinum
Hyalotheca
minor
Bambusina
borreri
Micrasterias
americana
Euastrum
coeseli
Micrasterias
apiculata
Cosmarium
simplicius
Euastrum
crassum
Staurastrum
simonyi
var.
sparsiaculeatum
Cosmarium
caelatum
Micrasterias
crux-melitensis
Pleurotaenium
ehrenbergii
Euastrum
didelta
Staurastrum
spongiosum
var.
perbifidum
Micrasterias
denticulata
Staurodesmus
dejectus
Cosmarium
conspersum
Micrasterias
papillifera
Lemmermannia
komarekii
Trebouxia
arboricola
Cosmarium
venustum
var.
excavatum
Spondylosium
pulchellum
Goniochloris
tripus
Desmodesmus
subspicatus
Staurodesmus
convergens
Glaucocystis
nostochinearum
Raphidocelis
arcuata
Desmidium
grevillei
Tetmemorus
laevis
var.
laevis
Hydrodictyon
reticulatum
Eremosphaera
viridis
cystozygote
Chlamydomonas
reinhardtii
Haematococcus
lacustris
Octactis
speculum