-
-
Gyrosigma (gyre-o-sig-ma), this is a pennate diatom, and this detail shows the pattern of striae (holes) on the frustule. This square packed pattern to either side of the raphe allows this genus to be distinguished from the superficially similar Pleurosigma. Differential interference contrast.
-
-
Image from type material.
-
Lardero, La Rioja, Spain
-
Trebabu, Brittany, France
-
Pera, Faro, Portugal
-
FRom the Bay of Villefranche in March 2013
-
Grove, O, Galicia, Spain
-
Miranda do Douro, Bragana, Portugal
-
Miranda do Douro, Bragana, Portugal
-
Valea, Galicia, Espaa
-
Original nib drawing made by Frenguelli.
-
Gyrosigma observed in freshwater sediments 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.
-
Image from type material.
-
Logrono, La Rioja, Spain
-
Pra, Faro, Portugal
-
Puras de Villafranca, Castille and Leon, Spain
-
El Palacio De Donana, Andalusia, Spain
-
Valea, Galicia, Espaa
-
Gyrosigma observed in freshwater sediments 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.
-
Image from type material.
-
Miranda do Douro, Bragana, Portugal
-
Gyrosigma observed in freshwater sediments in the vicinity of Broome, Western Australia in September 2003. This image was taken using differential interference contrast optics. This work was supported by the Australian Biological Resources Study.
