A bioluminescent ghost-mushroom with a cap of translucent amethyst and stem of pearlescent mycelium threads, growing from a moss-covered ancient redwood stump in a misty Pacific Northwest forest at twilight where fireflies dance among sword ferns, scientific field notes cross-section mapping spore-circulatory networks and light-emitting fungal gills, palette of forest floor umber, amethyst purple, bioluminescent cyan and pale firefly gold, Victorian natural history mycological expedition illustration aesthetic