condition mean min max Sterile Frond 1.9539402666666668 0.0 5.76705 Fertile Frond 1.755 0.0 3.57677 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 27.988204 0.0 83.672 Root 0.7687133333333334 0.0 2.30614