Euglenales

Phacus (fake-us) is a genus of autotrophic euglenids. It can be distinguished from Euglena by being flattened or twisted and rigid. The most species of the genus are flat and leaf-shaped often with ridges or fins running helically or longitudinally. The chloroplasts are small, discoid and pyrenoids are usually absent. There is a single red eyespot and one locomotive flagellum. Phacus contains conspicuous paramylon bodies, mostly with one ore two large bodies in the centre of the cell. The genus is common in freshwater ecosystems, in muds and associated with detritus. This specimen was collected in freshwater ponds near Konstanz, Germany. Phacus skujai is a small member of the genus. The cells are slender and ovoid. The large paramylon body (often accompanied by a second smaller body) in the mid-cell and the short spine point to the ventral side are said to be distinctive for the species. 28 µm.

Portrait of the colorless euglenoid flagellate, Menoidium bibacillatum (Pringsheim, 1942). Strongly flattened. One side curved with the other more straight. One emergent flagellum. Stigma absent. Paramylon bodies are dimorphic with smaller round and larger elongate ring forms. Swims rotating on long axis. Highly refractile. From standing freshwater near Boise, Idaho. DIC.

Scale bar indicates 10 µm. Sample from the pond Hegne Moor situated in the vicinity of Lake Constance. The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.Image under Creative Commons License V 3.0 (CC BY-NC-SA).

Colacium (coal-ace-ee-um) is a euglenid flagellate in which the cells are attached to the substrate b y means of a mucoid stalk. the euglenids are attached to the stalks by their anterior region. The individual cells may break free from the stalks and swim away, at which time they are indistinguishable from members of the genus Euglena. Plastids and eyespots can be discerned in some cells. Phase contrast.

Euglena ehrenbergii. Cell observed in freshwater habitats in the vicinity of Broome, Western Australia in September 2003. This image was taken using phase contrast optics.   This work was supported by the Australian Biological Resources Study.

[taxonomy:genus=Anisonema] Anisonema is gliding euglenid with two prominent flagella, the longer one trails along behind the cell. Here, two cells have either just finished dividing, or are just leaving conjugation (leave a comment if you know which!). At first I wondered what was this cell with four flagella, before realizing that it was actually two cells in the process of separating. From a sample originally collected 3 days ago.

Scale bar indicates 50 µm. The specimen was gathered in the wetlands of Nationalpark Unteres Odertal (100 km north east of Berlin). Sampling date 5/2019. The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Axioplan with Olympus OM-D M5 MKII. Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Creek in Oder valley 100 km north east of Berlin (Germany) Latitude: 53,135032 Longitude: 14,348738 Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 50 µm. Probe aus einem Feuchtbiotop im Nationalpark Unteres Odertal auf halber Strecke zwischen Schwedt und Gartz. Datum der Aufsammlung: 7/2019. Mikrotechnik: Zeiss Axioplan, Kamera: Olympus OM-D M5 MKII. Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.

Scale bar indicates 50 µm. Sample from the pond Hegne Moor situated in the vicinity of Lake Constance. The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Bog Hegne Moor near Lake Constance (Germany) Latitude: 47,718106 Longitude: 9,093974 Multiebenen-Abbildung, manuell gestapelt. Der Messbalken markiert eine Länge von 50 µm. Probe aus dem Simmelried nahe Konstanz. Mikrotechnik: Zeiss Universal, Kamera: Olympus C7070. Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.

Scale bar indicates 100 µm. The specimen was gathered in a pond in the forest of Altenholz-Stift near Kiel. Sampling date 7/2018. The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Axioskop with Olympus OM-D M5 MKII. Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Pond in the forest of Altenholz-Stift (Schleswig-Holstein, Germany) Latitude: 54,384913 Longitude: 10,125691 Der Messbalken markiert eine Länge von 100 µm. Die Probe wurde in einem Waldteich bei Altenholz-Stift (nahe Kiel) gesammelt. Datum der Aufsammlung: 7/2018. Mikrotechnik: Zeiss Axioplan, Kamera: Olympus OM-D M5 MKII. Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.

Ribadelago, Castille and Leon, Spain

Ribadelago, Castille and Leon, Spain

Cabanas De Sayago, Castille and Leon, Spain

Ribadelago de Franco, Castille and Leon, Spain

Sobrado, Galicia, Spain

Luanco, Asturias, Spain

Vilobi Del Penedes, Catalonia, Spain

Galende, Castille and Leon, Spain

Ribadelago de Franco, Castille and Leon, Spain

Ribadelago de Franco, Castille and Leon, Spain

Luanco, Asturias, Spain

Soba, Cantabria, Spain

Canencia, Comunidad de Madrid, Espaa

Melgar de Tera, Castille and Leon, Spain