portrait

Description:

Chlamydomonas, a volvocid flagellate. The genus is very large probably with many synonymous species. Two equal length flagella emerge from a prominent anterior papilla in this species. A small contractile vacuole can be seen just posterior to the flagellar insertion site. A well-demarcated central nucleus can be seen in these images. A very small stigma is present. There is a single large cup shaped chloroplast in this species. A large pyrenoid is present in the posterior half of the cell. Some species have a gelatinous sheath although the cell wall is closely applied to the protoplast in this species. From freshwater pond near Boise, Idaho. Oblique illumination.