condition mean min max Sterile Leaflet 19.233233333333335 2.6947 35.7072 Fertile Leaflet with Sori 4.146956 0.0 12.2611 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0