Chlamydomonas

1. Chlamydomonas antarcticus Wille (ref. ID; 3491)
2. Chlamydomonas bullosa Butcher, 1959 (ref. ID; 3721)
3. Chlamydomonas eugametos Moewus (ref. ID; 3718)
   Syn; Chlamydomonas moewusii Gerloff (ref. ID; 3718)
4. Chlamydomonas geitleri Ettl (ref. ID; 3709)
5. Chlamydomonas moewusii Gerloff
   See; Chlamydomonas eugametos Moewus (ref. ID; 3718)
6. Chlamydomonas reginae Ettl & Green, 1973 (ref. ID; 3718)
7. Chlamydomonas reinhardtii (ref. ID; 3721, 4189)
8. Chlamydomonas simplex (Pascher) (ref. ID; 3490)

Chlamydomonas bullosa Butcher, 1959 (ref. ID; 3721)

Descriptions

• Light microscopy: Cell length ranges from 10 um to 14.4 um (average 12 um). The average width of cells is 10 um. Young cells are narrowly ovoid, becoming more broadly ovoid as they age. The cell wall is prominent but distant from the periplast, and extends to a distinct saddle-shaped papilla. The chromatophore is apple green, cup-shaped and has a narrow but deep sinus. The nucleus is easily distinguishable, being located in an anterior position in the sinus of the chromatophore. The pyrenoid is round to oval and is in the posterior half of the cell. Some cells had two pyrenoids. The elongated eyespot is in an antero-median position. The two flagella are equal to the length of the cell. In cell division up to four daughter cells are produced. (ref. ID; 3721)
• Electron microscopy: The cell is bounded by a cell wall 80 nm in thickness, composed of several layers. Immediately inside the cell wall is a pitted granular layer in close proximity to the bounding membrane of the chloroplast. The thickness of this layer varies from 30 to 160 nm, and the pits are typically 100 nm in diameter. The overall thickness of the cell surface structure is 330 nm. The granular layer is an extension of the cytoplasm into the space between the chloroplast and the outer cell wall. The nucleus is roughly spherical, and typically 2.4 um in diameter. The nucleolus has a smooth regular outline, and is 1.4 um in diameter. Mitochondria are numerous throughout the cell and may be spherical, ranging in diameter from 550 to 950 nm, or elongated, reaching up to 2.7 um in length. Golgi bodies are located throughout the cell 7 to 9 saccules were observed in the stacks, which measured from 240 to 370 nm across. The saccules are flatly stacked, and a maximum of 6 golgi bodies per cell were observed. At least two are closely associated with the nucleus. The pyrenoid is spherical, posterior to median in position, and is typically 3 um in diameter. It is surrounded by a starch sheath 4 um across, which is penetrated by numerous chloroplast thylakoids with bundles of 2-4 lamellae. The chloroplast occurs in all parts of the cell, between other cell components. The intraplastidial eyespot is up to 1 um long. It consists of a double layer of pigment granules. Rough endoplasmic reticulum occurs throughout the cell. (ref. ID; 3721)

Chlamydomonas simplex (Pascher) (ref. ID; 3490)

Descriptions