Family: Hydrodictyaceae
Collection Date: November 11, 2011
Location: Hiram College Botany Lab, Algae Tanks
Collector: Katie Rumora
Key Used:
Bellinger, E. G., & Sigee, D. C. (2010). Freshwater Algae: Identification and Use as Bioindicators . Oxford : Wiley-Blackwell.
1b. Plants microscopic or if visible to the naked eye it is normally because they are present as a mass – but still requiring microscopic observation to determine the more detailed morphology … 3
3a. Cells grouped together to form a filament, strand or ribbon. Sometimes filaments can grow in such a profusion to be visible en masse, or are visible as multiseriate rows encrusting stones … 4
4a. Cell pigments localized in chloroplasts. Colour when fresh may be grass green, pale green, golden to brown, olive green or (rarely) blueish or reddish … 5
5a. Filaments branched, sometimes rarely. False or true branching … 6
6a. Branches of filaments rejoin to form a net ... Hydrodictyon
Description:
“Hydrodictyon (commonly known as the ‘water net’) forms macroscopic nets that are free floating (occasionally attached) of many centimeters in length. Populations may be large enough to partially block small streams, espically nutrient-rich waters. The cells are cylindrical and joined at the ends to form a net. Individual adult cells can be several millimeters in length … Widespread in ponds and slow moving ditches” (Bellinger & Sigee, 2010) .
Figure 1: Prepared slide of Hydrodictyon
Figure 2: Actual Specimen of Hydrodictyon
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