Chlamydomonas hedleyi
Diagnosis
Dominant phase in life cycle characterised by spherical non-motile cells 10-24 micrometers in diameter. Chloroplast very long, flat, sometimes lobed, located cortically under the cell membrane. Nucleus located centrally. Storage products vary depending upon the culture media. Lipid primary storage material in host and in media enriched with carbohydrates. Starch storage predominates in media with high organic nitrogen. One or two large embedded pyrenoids present; chloroplast distended with starch grains. Cell wall not ornamented. Motile forms present in cultures about 3-5 days after transfer to fresh media. Cells long, oval (12-18 x 6--8.5 micrometers), with truncated slightly furrowed anterior ends. Small apical papillus present from which extend two times thebody-length or slightly longer than body-length two Chlamydomonas hedleyi sp. nov. 409 acronematic flagella. Chloroplast displaced apically, extends c. 0-4-0.8 times length of the body. Typically a single pyrenoid embedded anteriorly in the chloroplast. Spherical nucleus located anterior-centrally. Stigma cortical, located approximately 0-2 times body length distal to the apex. Single functionless contractile vacuole.
Type species
The type species (holotype) of the genus Chlamydomonas is Chlamydomonas reinhardtii P.A.Dangeard.
Original description
Reference(s)
Observation site(s)
HOSTS
Association with... | Region origin | Name of site | In reference... |
---|---|---|---|
Archaias angulatus | Florida | Key Largo |
The taxonomic identity and physiological ecology of Chlamydomonas hedleyi sp. nov. algal flagellate symbiont from the foraminifer Archaias angulatus. British Phycological Journal 9:407 - 422. doi: 10.1080/00071617400650481 (1974) |