protostelic
/ˌproʊtoʊˈstɛlɪk/
adjective
- Relating to or having a protostele; describing a plant stem or root with a solid central core of vascular tissue.
- Botany students examined the protostelic arrangement under a microscope.
- The protostelic structure is common in primitive vascular plants.
- Many early fossil plants show a protostelic stem organization.