condition mean min max Sterile Leaflet 3.12264 1.42217 4.73428 Fertile Leaflet with Sori 0.69069 0.0 2.07207 Petiole 0.0 0.0 0.0 Crozier 0.055727 0.0 0.167181 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0