Stizocarya communis was a small, subglobose to ovoid icacinaceous fruit with an unusual perforated endocarp. Numerous narrow cylindrical channels run through the wall from the external surface to the seed cavity. Unlike the pitted fruits of Palaeophytocrene, however, these channels do not terminate in large tubercles projecting into the locule, giving Stizocarya a fundamentally different internal architecture.

The wall is thick, the principal marginal vascular bundle is embedded for most of its course, and the locule lining is made from relatively large interlocking, star-like or digitate cells rather than an ordinary field of fine papillae. These anatomical traits justify a distinct fossil genus. The fruit protected a single seed, but its soft outer tissues and vegetative organs are unknown; no specific growth habit should therefore be assigned beyond its secure membership in the woody Icacinaceae lineage.