Introduction
Epidermis
Cortex
Leaves
Spines
Poisons
Wood
Root Succulence
Apical Meristems
Cephalia
Flowers
Travel
Published papers
Back Oreocereus trollii. Shoots of this plant never become very tall, and for much of their life can be supported by WBT wood, but before they become as tall as in this photo, they must have switched from making WBT wood to making fibrous wood.