Author: Algal Web

Planktonic Unicellular and Colonial algae

Phylum Chlorophyta Botryococcus Colonial Chlorophyte: planktonic, sometimes bloom-forming. Colony is very dense, making cells hard to see; contains yellow oil droplets which can be squeezed out under a coverslip Haematococcus This alga is characteristic of shallow water which dries out regularly, such as bird-baths, which it stains a blood-red colour. Haematococcus is a chlorophyte, though […]

The Genus Spirogyra

Phylum Chlorophyta; sub-phylum Chlorophyceae; Order Zygnematales; Family Zygnemataceae Spirogyra species are unbranched filamentous green algae. The cell wall is characteristically straight and parallel-sided (compare with Oedogonium, Microspora or Stigeoclonium , which sometimes have bulbous cells). They have a single chloroplast in the form of a spiral ribbon which usually almost fills the length of the […]

The Genus Microspora

Phylum Chlorophyta; sub-phylum Chlorophyceae; Order Ulotrichales; Family Microsporaceae Microspora species are unbranched filamentous green algae. There is a single dense net-like chloroplast, usually filling the cell, no pyrenoid. The cells are frequently rather bulbous or barrel-shaped, but the chief diagnostic character is the presence of H-shaped wall sections (only Tribonema shares this characteristic), which can […]

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