Oocystoideae

Oocystis parva Scale bar indicates 10 µm. The specimen was gathered in a pond in Lemkendorf, isle of Fehmarn (Baltic Sea, Schleswig-Holstein, Germany). Sampling date 10/2014. 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-ND). Place name: Pond in Lemkendorf, isle Fehmarn (Baltic Sea, Germany) Latitude: 54.472296 Longitude: 11.095662 Der Messbalken markiert eine Länge von 10 µm. Die Probe wurde in einem Teich in Lemkendorf (Fehmarn) gesammelt. Datum der Aufsammlung: 10/2014. Mikrotechnik: Zeiss Axioplan, Kamera: Olympus OM-D M5 MKII. Creative Commons License V 3.0 (CC BY-NC-ND). For permission to use of (high-resolution) images please contact postmaster@protisten.de.

Oocystis marssonii Scale bar indicates 25 µm. The specimen was gathered in the wetlands of Nationalpark Unteres Odertal (100 km north east of Berlin). Sampling date 5/2022. 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 25 µm. Probe aus einem Feuchtbiotop im Nationalpark Unteres Odertal auf halber Strecke zwischen Schwedt und Gartz. Datum der Aufsammlung: 7/2022. 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.

Franceia ovalis Franceia belongs to the Chlorococcales group of the Chlorophyta wearing arcuate spiny projections. Sample from littoral region (reed belt by Phragmites) of a rain storage reservoir in Kiel (Schleswig-Holstein, Germany). This image was taken using Zeiss Universal with Olympus C7070 CCD camera.Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Pond Demühlen, rain storage reservoir in Kiel-Russee (Schleswig-Holstein, Germany) Latitude: 54.304095 Longitude: 10.086073 Franceia gehört zur Gruppe der Chlorococcales trägt bogenförmige, stachelige Schwebefortsätze. Aus der von Schilf bewachsenen Uferzone eines Regenrückhaltebeckens in Kiel. 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.

Franceia ovalis The specimen was gathered in the pond Birkensee near Rödelsee (Lower Franconia, Germany). Sampling date 7/2018.Copyright Dr. Rainer Meisch, Würzburg, Germany.Images were taken using Zeiss Axioplan with Canon DSLR Image under Creative Commons License V 3.0 (CC BY-NC-SA). Place name: Pond Birkensee near Rödelsee (Lower Franconia, Germany) Latitude: 49.71819841 Longitude: 10.27807474 Probe aus dem Birkensee bei Rödelsee (Unterfranken). Datum der Aufsammlung: 7/2018. Copyright Dr. Rainer Meisch, Würzburg. Mikrotechnik: Zeiss Axioplan, Kamera: Canon DSLR. Creative Commons License V 3.0 (CC BY-NC-SA). For permission to use of (high-resolution) images please contact postmaster@protisten.de.

Lardero, La Rioja, Spain

Melgar de Tera, Castille and Leon, Spain

Green algae live in a mucus ball. Phase contrast microscopy.

Portrait of the nonmotile green alga, Franceia droescheri (Lemmermann, 1898). The cell is ovoid with a thin inflexible cell wall. Usually solitary but may be found in small colonies embedded in a gelatinous matrix.Long fine slightly tapered spinous projections are randomly distributed over the entire cell surface. The otherwise identical Chodatella ciliata has spines lacalized to the poles of the cell. F. droescheri has one to three parietal chloroplasts eache with a pyrenoid.The nucleus is not well seen in this image. Collected from freshwater pond near Boise, Idaho December 2003. DIC optics.

Chodatella citriformis containing 8 autospores, sampled from shore water of Lake Kinneret in March 2006. This Chlorophyte (Chlorococcales) can be found in the plankton of the lake at most times of the year, particularly in May-June, but is never dominant.