Introduction
Epidermis
Cortex
Leaves
Spines
Poisons
Wood
Root Succulence
Apical Meristems
Cephalia
Flowers
Travel
Published papers
Back Ariocarpus fissuratus root. The center of the root is dilatated metaxylem (xylem parenchyma proliferates, pushing the metaxylem vessels apart, creating a pith-like region). Within this pith-like region, a giant mucilage chamber forms.