condition mean min max Sterile Frond 2.34957 0.0 5.55322 Fertile Frond 0.32171133333333335 0.0 0.800484 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.0 0.0 0.0 Root 0.0 0.0 0.0