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- Where do mushroom forests thrive? 4 answers
On this hypothetical world the niche that would be occupied by plants is instead occupied by fungi living in symbiosis with cyanobacteria and/or algae.
For example, the tissues of the tree analogues are actually mycelium, highly specialized in a manner similar to the zooids of siphonophores.
How plausible is this scenario? What other adaptations would the lichen be expected to have?