Someone upthread mentioned mushrooms. Slime molds work too. Hell…ANY fungus!
I remember that DC’s Swamp Thing had a story arc in the 1990s where they expanded the main character into being a full fledged “plant elemental”, able to be in contact with “The Green”. The Green was a shared plane of consciousness for all plant life, as I recall, including other plant elementals.
But there was also “The Grey”, which was the same concept for all fungal life.
I remember that DC’s Swamp Thing had a story arc in the 1990s where they expanded the main character into being a full fledged “plant elemental”, able to be in contact with “The Green”. The Green was a shared plane of consciousness for all plant life, as I recall, including other plant elementals.
But there was also “The Grey”, which was the same concept for all fungal life.