thingsaurus
This is a 'thesaurus for things' or similarity engine: results show things that have something in common with what you enter. The more stars, the more things in common! You can use it for research, recommendations or simply to explore ideas and related subjects.
Here are your results for Cetraria islandica...
Stars indicate closer matches.
Rhizocarpon geographicum 
- Solorina crocea
- Circinaria calcarea
- Cladonia cornuta
- Lichenomphalia umbellifera
- Peltigera aphthosa
- Umbilicaria polyphylla
- Flavoparmelia caperata
- Platismatia glauca
- Bryoria implexa
- Peltigera leucophlebia
- Lepraria incana
- Umbilicaria vellea
- Pseudephebe minuscula
- Arctoparmelia separata
- Dactylina arctica
- Bellemerea alpina
- Chrysothrix chlorina
- Cladonia albonigra
- Cladonia stellaris
- Solorina spongiosa
- Umbilicaria crustulosa
- Pseudephebe pubescens
- Chrysothrix candelaris
- Cladonia coccifera
- Cladonia rangiferina
- Glaucomaria carpinea
- Graphis scripta
- Hypogymnia physodes
- Lobaria pulmonaria
- Nephroma resupinatum
- Parmelia omphalodes
- Parmelia saxatilis
- Peltigera canina
- Peltigera venosa
- Ramalina farinacea
- Ramalina fraxinea
- Umbilicaria deusta
- Usnea hirta
- Xanthoria parietina
- Cetrelia chicitae
- Cetrelia monachorum
- Imshaugia aleurites
- Protoparmelia badia
- Vulpicida pinastri
- Verrucaria funckii
- Brodoa intestiniformis
- Gowardia arctica
- Usnea lambii
- Cladonia trassii
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