Cyanophytes (Blue Green Algae)

Anabaena sp.

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(cell length 2-3 µm; width 2-3 µm)

Gloeocapsa sp.

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(cell diameter 40-60 µm)

valve 3

Oscillatoria agardhii

Description of Oscillatoria agardhii (Gomont)
Isolated from the Verde River below Bartlett Lake (R7)

Trichome and straight to slightly curved often forming a bundle or thallus
Trichomes vary from brown/dark-red to dark green/blue-green in color
Cells not distinctly placed from one another and not constricted at crosswalls
Cells granulated at the septa
Quadrate cells mostly shorter than long (2.5-4 µm)
End cells convex, but sometimes bluntly conical or pointed
Possess convex calyptra, seldom capitate
Trichomes range from 4-6 µm in diameter
Sheath absent
Exhibit gliding movements

Geosmin Producer from R7
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Verde River below Bartlett Lake
(cell length 2.5-4 µm; width 4-6 µm)

Oscillatoria tenius

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(cell length 1.5-2 µm; width 2.5-4 µm)

Oscillatoria splendida

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(cell length 3-9 µm; width 2-3 µm)

Oscillatoria sp.

Phormidium sp.
Description of Phormidium sp.
Isolated from the Verde River between Horseshoe and Bartlett Lakes (R5)

Trichome and straight to slightly curved
Often form a gelatinous or leathery thallus attached at bottom
Trichomes brilliant blue-green or olive green in color
Cells not distinctly separated, but may show some constriction at crosswalls
Rarely quadrate, cells 1-2 times broader than long (1-3 µm long)
Cylindrical cells with end cells rounded or oval
Trichomes range from 1-2.5 µm in diameter
Firm sheath present, sometimes agglutinated, sometimes thin and colorless
Trichomes non-motile

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(cell length 1-3 µm; width 1-2.5 µm)

Pseudanabaena sp. #1
Description of Pseudanabaena sp. #1
Isolated from three intensive-monitoring sites on the Arizona Canal
(Scottsdale Road, Central Avenue and Deer Valley WTP)

Trichome single, not forming a thallus
Trichomes are brown to dark-red in color
Cells distinctly separated with conspicuous constrictions at crosswalls
Cylindrical cells are longer than broad (4-6 µm long)
Cells often barrel-shaped with rounded or oval ends
Trichomes range from 2-3 µm in diameter
Sheath absent
Exhibit creeping movements

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AZ Canal MIB Producer
(cell length 4-6 µm; width 2-3 µm)

Pseudanabaena sp. #2
Description of Pseudanabaena sp. #2
Isolated from one intensive-monitoring site on Saguaro Lake (SS4)

Trichome single, not forming a thallus
Trichomes are dark green to blue-green in color
Cells distinctly placed from one another with conspicuous constrictions at crosswalls
Cylindrical cells are longer than broad (2-4 µm long)
Cells often barrel-shaped with rounded or oval ends
Trichomes range from 1-3 µm in diameter
Sheath may be present
False-branching may occur when sheath present
Non-motile, except for hormogonia free from sheath

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Saguaro Lake MIB Producer
(cell length 2-4 µm; width 1-3 µm)

Pseudanabaena sp. #3
Description of Pseudanabaena sp. #3
Isolated from the Arizona Canal above the Cross-Connect (R12)

Trichome single, not forming a thallus
Trichomes are dark blue-green to brown/dark-red in color
Cells distinctly placed from one another with conspicuous constrictions at crosswalls
Cylindrical cells nearly quadrate (2-4 µ Cells often barrel-shaped with rounded or oval ends
Trichomes range from 2-3 µm in diameter
Sheath absent
Exhibit creeping movements

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R12 MIB Producer
(cell length 2-4 µm; width 2-3 µm)

Spirulina sp.

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(cell length 1 µm; width 1-2 µm)

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