Tabular parenchyma may be well developed all around the fvb or present only around the dorsal fibrous part, but is sometimes difficult to observe.
[legend of the figure]
A fibrous vascular bundle (fvb) with its different characters. AL = auricular lobe; AS = auricular sinus; dcap = fibrous dorsal cap; MS = median sinus; RP = radiating parenchyma; TP = tabular parenchyma; vasc = vascular; vcap = fibrous ventral cap.
a: Sagittata;
b: Cordata;
c: Complanata;
d: Reniforma;
e: Lunaria;
f: Vaginata.