The wings have complex reticulate venation. The main veins are straight to sinuous, radiating from the locular areas and extending to the fimbrial vein with occasional cross oblique cross veins.
The elliptical locular area, covered with reticulate venation, contains several elliptical seeds.
160), are elliptical with rounded to cordate base and apex, and have membranous wings with subparallel complex reticulate venation; main veins are somewhat sinuous, craspedodromous to the fimbrial vein.
They are chartaceous, with a leaf-like, festooned brochidodromous pattern of reticulate venation consisting of looped secondary and tertiary lateral veins (Fig.
triquetra is ovate to elliptical, inflated in the locular area, but the distal part of each carpel drawn into a membranous or chartaceous wing with radiating irregular reticulate venation and a thin fimbrial vein.
The fusiform locular area has reticulate venation with more or less equidimensional areoles, but this reticulum connects with the wing venation pattern which is simple, subparallel, composed of fine veins radiating from the central area out to the margins with occasional dichotomies and anatomoses, and craspedodromous to a fimbrial vein (Fig.
The wings are chartaceous, with a complex reticulate venation pattern of three or four orders.
The chartaceous wings have complex reticulate venation, consisting of multiple orders delimiting more or less isodiametric polygonal areoles.
Each valve has a prominent midvein to which the seeds are serially attached, with pinnate, complex reticulate venation. There is a fine fimbrial vein.