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Rivularia (Cyanophyceae)

Rivularia sp.
Modified from image at fotciencia.fecyt.es

Rivularia sp.

Rivularia sp. from Lake Attitash MA USA 15 July 2014; epiphytic on invasive Myriophyllum heterophyllum.  Coiled sections near the base of these filaments may be the result of cell growth and elongation within the highly viscous gel of the colony, anchoring the upper sections in place. Collected by Katie Langley, University of New Hampshire

Rivularia sp. from Lake Attitash MA USA 15 July 2014; epiphytic on invasive Myriophyllum heterophyllum.  coiled sections near the base of these filaments may be the result of cell growth and elongation within the highly viscous gel of the colony, anchoring the upper sections in place. Collected by Katie Langley, University of New Hampshire

Rivularia sp. from Lake Attitash MA USA 15 July 2014; epiphytic on invasive Myriophyllum heterophyllum.  coiled sections near the base of these filaments may be the result of cell growth and elongation within the highly viscous gel of the colony, anchoring the upper sections in place. Collected by Katie Langley, University of New Hampshire

Rivularia sp. from Lake Attitash MA USA 15 July 2014;  intersection of adjacent colonies. Epiphytic on invasive Myriophyllum heterophyllum.  Entire colony ~ 2 mm diameter with highly viscous gel. Collected by Katie Langley, University of New Hampshire

Rivularia sp. from Lake Attitash MA USA 15 July 2014;  intersection of adjacent colonies. Epiphytic on invasive Myriophyllum heterophyllum.  Entire colony ~ 2 mm diameter with highly viscous gel. Collected by Katie Langley, University of New Hampshire

Rivularia sp. from Lake Attitash MA USA 15 July 2014;  intersection of adjacent colonies. Epiphytic on invasive Myriophyllum heterophyllum.  Entire colony ~ 2 mm diameter with highly viscous gel. Collected by Katie Langley, University of New Hampshire

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Rivularia sp. from Lake Attitash MA USA 15 July 2014
Collected by Katie Langley, University of New Hampshire

Rivularia sp. from Lake Attitash MA USA 15 July 2014
Collected by Katie Langley, University of New Hampshire

Rivularia sp. from Lake Attitash MA USA 15 July 2014
Collected by Katie Langley, University of New Hampshire

Rivularia sp. from Lake Attitash MA USA 15 July 2014 illustrating the terminal location of heterocysts at the base of filaments. Collected by Katie Langley, University of New Hampshire

Rivularia sp. from Lake Attitash MA USA 15 July 2014 illustrating the terminal location of heterocysts at the base of filaments. Collected by Katie Langley, University of New Hampshire

Rivularia sp. from Lake Attitash MA USA 15 July 2014 illustrating the terminal location of heterocysts at the base of filaments. Collected by Katie Langley, University of New Hampshire

Rivularia sp.
Modified from image at lebrusc.chez-alice

Rivularia sp.
Modified from images at botany.si.edu

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