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Collema glebulentum (Nyl. ex Crombie) Degel.
Family: Collemataceae
[Collema coralliferum Degel.,  more]
Collema glebulentum image
Lucy Taylor  
Life habit: lichenized (mutualistic with algal photobionts) thallus: foliose (foliaceous), leaf-like [th marginal and upper surface] specific structures: present [th upper surface] isidia, isidioid structures: present ascomata: absent primary photobiont: present secondary photobionts (eg in cephalodia): absent primary photobiont: cyanobacterial.

substrate: rock – siliceous, siliciferous, acidic | rock – calcareous, calciferous, basic.