 Mermaid's Hair ( Lyngbya majuscula ) Common in shallow salt water and often covering rocks. |
Cyanophycota
Species in this group are distributed widely in both salt and freshwater forms. Most species are covered by a gelatinous sheath which enables them to live in close vicinity to hot springs, in polluted water or on moist tile and soil.
During the summer some species increase in abundance they form a pond scum. Some varieties poison water supplies.
Blue-green algae are the simplest form of all algae. They have a poorly defined nucleus and pigmentation are unconfined, spreading over the cells. Reproduction is by simple cell division. Some of the blue-green algae occur in the form of a single cell, some in filaments while others in gelantinous masses.
| Taxonomic Hierarchy | |
 Chroococcus |
|
| Kingdom | Monera – monerans |
| Phylum | Cyanophycota – blue-green algae, cyanophytes |
| Class | Cyanophyceae |
| Order | Chroococcales |
| Family | Chroococcaceae |
| Genus | Chroococcus Nageli, 1849 |
| Chroococcus, Nageli, 1849, Taxonomic Serial No.: 654 | |
Chroococcus has distinctive gelatinous sheaths.
| Taxonomic Hierarchy | |
 Merismopedia elegans |
|
| Kingdom | Monera – monerans |
| Phylum | Cyanophycota – blue-green algae, cyanophytes |
| Class | Cyanophyceae |
| Order | Chroococcales |
| Family | Chroococcaceae |
| Genus | Merismopedia Meyen, 1839 |
| Species | Merismopedia elegans A. Br. In Kutz, 1849 |
| Merismopedia elegans, A. Br. In Kutz, 1849, Taxonomic Serial No.: 732 | |
Merismopedia is connected in flat colonies.
| Taxonomic Hierarchy | |
 Oscillatoria limosa |
|
| Kingdom | Monera – monerans |
| Phylum | Cyanophycota – blue-green algae, cyanophytes |
| Class | Cyanophyceae |
| Order | Nostocales |
| Family | Oscillatoriaceae |
| Genus | Oscillatoria Vaucher Ex Gomont, 1893 |
| Species | Oscillatoria limosa (Roth) C. Agardh |
| Oscillatoria limosa, (Roth) C. Agardh, Taxonomic Serial No.: 976 | |
Oscillatoria are arranged in a filament resembling a stack of wafers.
| Taxonomic Hierarchy | |
 Nostoc pruniforme |
|
| Kingdom | Monera – monerans |
| Phylum | Cyanophycota – blue-green algae, cyanophytes |
| Class | Cyanophyceae |
| Order | Nostocales |
| Family | Nostocaceae |
| Genus | Nostoc Vaucher, 1888, Ex Bornet and Flahaul |
| Species | Nostoc pruniforme C. Agardh |
| Nostoc pruniforme, C. Agardh, Taxonomic Serial No.: 1168 | |
Nostoc has strings of beadlike cells.
| Taxonomic Hierarchy | |
 Gloeotrichia echinulata, which is filamentous may be free-floating or attached, forming colonies. |
|
| Kingdom | Monera – monerans |
| Phylum | Cyanophycota – blue-green algae, cyanophytes |
| Class | Cyanophyceae |
| Order | Nostocales |
| Family | Rivulariaceae |
| Genus | Gloeotrichia Jg. Agardh Ex Bornet and Flah., 1886 |
| Species | Gloeotrichia echinulata (J. Smith) P. Richter |
| Gloeotrichia echinulata, (J. Smith) P. Richter, Taxonomic Serial No.: 1300 | |
In abundance, Gloetrichia can be an irritant to the skin of swimmers.
| Taxonomic Hierarchy | |
| Kingdom | Monera – monerans |
| Phylum | Cyanophycota – blue-green algae, cyanophytes |
| Direct Children: | |
| Genus | Prochlorococcus Chisholm et. al., 2001 |
| Class | Cyanophyceae |
| Cyanophycota, Taxonomic Serial No.: 601 | |
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