Table 2: Concentration of Ca2+ and Mg2+ in shoots of different angiosperm families (data taken from [123]).

familyCa2+Mg2+

Plantaginaceae 17.38 1.69 (0.13)
Polygonaceae (6)5.90 (1.23)2.87 (0.41)
Poaceae (6)3.33 (0.25)1.33 (0.07)

in parenthesis is .
are the average value of the mineral in mg/g dry weight, with SE in parenthesis.