Tietea singularis SOLD
System: Permian.
Training: Pedra do Fogo.
Origin: Bieland, Maranhao province, Brazil.
Measurements: 16.7 cm x 11.5 cm x 2.2 cm
Tietea is a tree fern.
This piece is a Tietea xylopal: you can distinguish the conductive vessels in the central area and around it is the parenchyma where substances are stored.
In Tietea the vascular bundles are round, ovoid or C-shaped, unlike Psaronius which has sinuous bands of xylem.
