"We also construct algorithmic and Liz-Zempel complexity hierarchies of fungal sentences and show that species S. commune generate the most complex sentences."
Is this the first time a non-animal species has exhibited such behavior under verifiable conditions?
They don't appear to literally be claiming that this is a language, a less click-baity title would be 'Calcium wave communication in networks of fungi mycelium'. This is not a newly discovered phenomenon - we've known that fungi use calcium derived electrical potentials to signal the mass to do things for a long time. There's no evidence this is any more complex than hormonal communication in plants, just a different media.
"We also construct algorithmic and Liz-Zempel complexity hierarchies of fungal sentences and show that species S. commune generate the most complex sentences."
Is this the first time a non-animal species has exhibited such behavior under verifiable conditions?