Family: Gleoutilaceae
Collection Date: November 15th, 2011
Location: Hiram College Botany Lab Algal 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
5b. Filaments or ribbons unbranched … 24
24b. Cell wall not made of silica … 30
30b. Chloroplasts not in the form of a spiral band … 31
31a. Filaments are unbranched with the cells embedded in a prominent broad mucilaginous hyaline cylindrical envelope with broadly rounded ends… Geminella
Description:
“Cells are between 5-25ยต broad and up to twice as long as they are wide and are surrounded by a thick sheath of mucilage. Cells often occur in pairs along the filament. The chloroplast is a parietal plate, roughly saddle-shaped and located near the central region of the cell. A pyrenoid is usually present. Reproduction is by fragmentation of the filament. Occurs in shallow, often slightly acidic, waters. Chlorophyta” (Bellinger & Sigee, 2010) .
Figure 1: Prepared slide image of Giminella
Figure 2: Actual specimen of Giminella
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