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Jelly Lichen

Collema sp.


Small patches of green slimy lichen with flat bluish-white apothecia (spore bearing structures) on damp tree trunks. These were seen growing along side Cartilage lichen (Ramalina farinaceae) as seen in pic 3.


Spotted on coastal banksia along the high tide mark- Snowy River estuary


The slimy thallus of this species is made up of cyanobacteria, which is the photobiont. Without the apothecia, this lichen can be mistaken for Nostoc where the photobiont is also cyanobacteria. They formed small interesting black patches with blue dots, on the moist tree trunks.
Family: Collemataceae

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Leuba Ridgway
Leuba Ridgway 7 years ago

They were fascinating but a little difficult to see unless you study tree trunks closely. Mark (husband) was the first to spot these.
You might have seen Nostoc -the terrestrial (brown algae) although some don't group it as an algae because it has cyanobacteria. Nostoc looks like green slimy, mouldy growth on damp soil. The body of Collema looks like Nostoc except for the whitish spore bearing discs. Quite attractive !

triggsturner 7 years ago

Fascinating Leuba. I have never seen this before and didn't even know jelly lichen was a 'thing'. I will look out for it. Thank you for sharing this.

Leuba Ridgway
Spotted by
Leuba Ridgway

Victoria, Australia

Spotted on May 16, 2017
Submitted on May 24, 2017

Spotted for Mission

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