Portrait of the eustigmatophyte, Chlorobotrys regularis West, 1903 (Bohlin, 1901). Spherical paired cells enclosed in a faintly laminated mucilagenous sheath (seen well in this phase contrast image). Multiple parietal chloroplasts. The red spot in each cell is an oil globule. Collected from a freshwater pond near Idaho City, Idaho. June 2005.Phase contrast. This image was taken by William Bourland. He now uses a Zeiss Axioskop 2 with Spot Insight and Spot Flex CCD cameras (Diagnostic Instruments). Image copyright: William Bourland, image used under license to MBL (micro*scope).
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From the collection
Freshwater and Terrestrial Microbes of Idaho (USA) and Elsewhere
|Description of Chlorobotrys regularis: Euglenids, with plastids, free-swimming, with an envelope with sharply defined neck or collar surrounding an apical pore through which the flagellum emerges; naked cells escape from the envelope after reproduction (and at other times); shape and size of loricas used to define species; loricas upon secretion ed, are colourless and smooth at first but soon becomes brown, ornamented (pores, punctae, spines, warts or ridges) and brittle with ferric hydroxide and manganese salts; with pyrenoids; a few species are colourless and osmotrophic; eyespot and flagellar swelling present; euglenoid movement and cell rotation occur within the envelope; canal opening sub-apical even though the envelope pore is apical; very speciose, almost exclusively freshwater, common in acidic to neutral waters (pH 4.5-7), often in peaty pools and other habitats rich in reduced iron and manganese, cosmopolitan; type species: T. volvocina (Ehrenberg) Ehrenberg 1833. |