If a pith is present, it is part of the stele, otherwise the stele only includes the primary vascular tissue and the ground tissue that surrounds it.

If a pith is present, it is part of the stele, otherwise the stele only includes the primary vascular tissue and the ground tissue that surrounds it.

A cardinal organ part (PO:0025001) that is the central column of a plant axis that consists of the primary vascular tissue and associated ground tissue.

stele