Element

Concentration (mg·g−1 d. w.)

Stipe

Apical portion

Al

1000.1 ± 7.5

972.3 ± 7.6

Fe

252.0 ± 3.2

225.0 ± 4.3

Zn

59.6 ± 0.9

50.5 ± 2.5

Mn

65.1 ± 0.7

31.2 ± 0.6

Cu

30.0 ± 1.6

11.4 ± 0.9