Cyanidium (sigh-ann-id-ee-um) is a small coccoid RED alga. Although its colour is exactly the same as that of many prokaryotic blue-green algae, careful scrutiny of the cells shows that the pigments is not distributed throughout the cell, but is within a compartment (filling most of the cell). In nature, these cells form a coating several millimeters thick over the substrate. The cells also have an external organic wall. Most cells are solitary but small groups of dividing cells are also evident. Differential interference contrast. Material from Nymph Creek and Nymph Lake, thermal sites within Yellowstone National Park, photograph by Kathy Sheehan and David Patterson. Images were taken of samples from thermal sites in Yellowstone National Park at the Thermal Biology Institute of Montana State University, August 2001. Image copyright: D. J. Patterson, image used under license to MBL (micro*scope).
download as pdf file
download large file
From the collection
Yellowstone National Park (Wyoming, USA)
|Description of Cyanidium: Unusual unicellular red alga (that is usually coloured blue green). Among eukaryotes, distinguished by its tolerance of extreme conditions such as acidity and high temperature. |