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Coenogonium sp


This is a lichenized form of the common green alga Trentepohlia that is fairly common in upland forest in the tropics.


When the alga grows free of the fungus, it forms rather disorganized, cotton-wool-like colonies, but when lichenized, it forms these very characteristic fan-like forms. You may be able to find apothecia (like circular cream-coloured disks), on the underside which show that it is definitely a lichen. The odd thing about it is the amount of gelatin-like "goo" - it's just possible that you have some cyanobacteria or some alga growing on the lichen!

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1 Comment

Scott Frazier
Scott Frazier 7 years ago

Very interesting and informative. Thanks!

Spotted by

Cartago, Costa Rica

Lat: 9.59, Long: -83.88

Spotted on Oct 7, 2011
Submitted on Oct 7, 2011

Spotted for Mission

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