Geosiphon
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Geosiphon is a genus of the Phylum Glomeromycota, Order Glomerales, and Family Geosiphonaceae.
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[edit] Life cycle
Geosiphon is known for being symbionts with Nostoc forming a Glomales-like fungus, notable for being one of the few non-ascomycete lichens.
It is one of the earliest lichens, containing a "siphonal bladder" that is made of a combination of 2/3 being upper Nostoc filaments and heterocysts, and the lower 1/3 being fungus with lipid droplets.
[edit] Reproduction
The spores are 250 micrometres in diameter, formed at the end of one hypha, or between two hyphae and resemble those of Glomus.
[edit] Somatic structure
Geosiphon has a specialised bladder used to harbour cyanobacteria, vesicles, but no arbuscles.
[edit] References
- C.J. Alexopolous, Charles W. Mims, M. Blackwell, Introductory Mycology, 4th ed. (John Wiley and Sons, Hoboken NJ, 2004) ISBN: 0-471-52229-5
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