Mean ± SE 3-<i>0</i>-<i>β</i>-cellobiosylhederagenin (saponin 1) and 3-<i>0</i>-<i>β</i>-cellobiosyloleanolic acid (saponin 2) in large, medium, and small leaves within the same plant.

Large, medium and small leaves had a maximum leaf width of >50 mm, 20–50 mm, and <20 mm, respectively. For each plant and leaf type n = 10. Saponin concentrations given as peak areas for the signal of the molecular ion in the negative-ion mass spectrum [M-H]−/mg of leaf fresh weight.