Lichen on sandstone…

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Lichen is a symbiotic organism consisting of a fungus and a green alga. The alga provides nutrients by way of photosynthesis while the fungus provides protection to the alga by retaining water as well as other benefits. This one sort of has a flower appearance.



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Lichen is a composite organism that is a symbiotic relationship between a fungus and a green algae. Some cultures have used lichens as a food source, but I think you’d have to be pretty hard up to resort to this. Some lichens have medicinal uses as well as the making of perfumes and dyes.