| ELEMENT | Concentration (mg·g−1 d. w) | |
| Stipe and basal branches | Apice | |
| N | 17.83± 0.50 (A) | 15.76± 0.60 (A) |
| 25.31 0.26 (J) | 21.95 0.62 (J) | |
| P | ||
| 0.152 ± 0.002 (A) | 0.074 ± 0.001(A) | |
| 0.846 0.02 (J) | 0.539 0.02 (J) | |