Many ferns depend on associations with mycorrhizal fungi. Many ferns grow only within specific pH ranges; for instance, the climbing fern (Lygodium palmatum) of eastern North America will grow only in moist, intensely acid soils, while the bulblet bladder fern (Cystopteris bulbifera), with an overlapping range, is found only on limestone.
many ferns depend on associations with mycorrhizal fungi many ferns grow only within specific ph ranges; for instance the climbing fern (lygodium palmatum) of eastern north america will grow only in moist intensely acid soils while the bulblet bladder fern (cystopteris bulbifera) with an overlapping range is found only on limestone