photomicrograph of endophytic fungus distribution in Psilotum nudum gametophyte	photomicrograph of Psilotum nudum gametophyte cells containing hyphae, fungal vesicle (FV), and hyphal plexus (HP)	electronmicrograph of Psilotum nudum gametophyte cytoplasm including mitochondria (M), plastids (P), vacuole (V) and tonoplast (T)
electronmicrograph of Psilotum nudum gametophyte cells containing fungal hyphae	electronmicrograph of fungal hyphae within Psilotum nudum gametophyte	electronmicrograph of fungal hyphae within Psilotum nudum gametophyte