Sotto: STEMMA PAPALE di Karol Wojtyla, giardini vaticani:

Sotto: HIRAM ABIFF:
"important symbol in Freemasonry.
Botanically, it is the acacia vera of Tournefort,
and the mimosa nilotica of Linnaeus, called
babul tree in India.
The acacia arabica grew abundantly in
the vicinity of Jerusalem,
where it is still to be found, and is
familiar in its modern use at the tree
from which the gum arabic of commerce is
derived
- Mackey - Encyclopedia of Freemasonry -