Tolypothrix Kützing ex Bornet & Flahault 1886

Ribadelago de Franco, Castille and Leon, Spain

Ribadelago de Franco, Castille and Leon, Spain

Ribadelago de Franco, Castilla y Len, Espaa

Ribadelago de Franco, Castille and Leon, Spain

Ribadelago de Franco, Castille and Leon, Spain

Tolypothrix (toe-leap-owe-thricks), a filamentous and branching blue green alga (cyanobacterium) with a heterocyst located at the base of each branch point. Filaments within a well developed sheath. Differential interference contrast.

Tolypothrix (toe-leap-owe-thricks), a filamentous and branching blue green alga (cyanobacterium) with a heterocyst located at the base of each branch point. Filaments within a well developed sheath. Phase contrast.

Tolypothrix (toll-eep-o-thricks) is a filamentous blue-green alga (cyanobacterium) which expresses false branching, i.e., the cells divide in one plane only, but a heterocyst may cause cells to break free and form an apparent branch. Heterocysts are differentiated thick-walled cells that provide the site for nitrogen fixation. This image shows a tangle of filaments. Differential interference microscopy. data on this strain.

Tolypothrix (toll-eep-o-thricks) is a filamentous blue-green alga (cyanobacterium) which expresses false branching, i.e., the cells divide in one plane only, but a heterocyst may cause cells to break free and form an apparent branch. Two false branches are shown in this image. Heterocysts are differentiated thick-walled cells that provide the site for nitrogen fixation, and three are prominent in this image. Differential interference microscopy. data on this strain.

Tolypothrix (toll-eep-o-thricks) is a filamentous blue-green alga (cyanobacterium) which expresses false branching, i.e., the cells divide in one plane only, but a heterocyst may cause cells to break free and form an apparent branch. Heterocysts are differentiated thick-walled cells that provide the site for nitrogen fixation. In this image, the empty-looking heterocyst is located within the trichome and has a rectanglular shape. Differential interference microscopy. data on this strain.

Tolypothrix (toll-eep-o-thricks) is a filamentous blue-green alga (cyanobacterium) which expresses false branching, i.e., the cells divide in one plane only, but a heterocyst may cause cells to break free and form an apparent branch. Heterocysts are differentiated thick-walled cells that provide the site for nitrogen fixation. In this image, the heterocyst is terminal and has a hemispherical shape. Differential interference microscopy. data on this strain.