online flora
This key is adapted to identify the most frequent lichens in urban environments. If you cannot find the species observed, you can indicate “other fruticose/foliaceous/crustose lichen” on your relevé. This information will allow us to consider the observed species even if it has not been identified.
The species you are observing is...
... dry and stiff
lichen
... supple and green
moss
... in green spots
algae
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