| Some fungi are associated with two symbionts, a green alga and a cyanobacterium. The morphology of the lichen depends very much on the symbiont, which can be seen especially well in Sticta canariensis. The fungus may live together with either the green alga or the cyanobacterium - the result being a completely different morphology. Sometimes you may find composite thalli, in which the green algal morph thallus develops from the cyanobacterial thallus. |
| Sticta canariensis |
| Synonyms | : | Sticta dufourii |
| Norsk | : | skjellporelav |
green algal photomorph |
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cyanobacterial photomorph |
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composite thalli |
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In contrast to Sticta canariensis, the species shown here below are true tripartite symbioses. In these lichens, the cyanobacterial photobiont is located in structures that clearly stand out from the remaining thallus; such structures are called cephalodia. |
| Peltigera aphthosa |
| Nederlands | : | Grasgroen leermos |
| Deutsch | : | Warzige Apfelflechte |
| Norsk | : | grønnever |
| Svenska | : | torsklav |
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| Placopsis gelida |
| Nederlands | : | Grote zeepkorst |
| English | : | Flesh-coloured alpine lichen |
| Deutsch | : | Braunes Bullenauge |
| Svenska | : | knöllav |
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| Placopsis lambdii |
| Svenska | : | blank knöllav |
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