Introduction

Epidermis

Cortex

Leaves

Spines

Poisons

Wood

Root Succulence

Apical Meristems

Cephalia

Flowers

Travel

Published papers

Back    LS of WBTS in wood of Thelocactus heterochromus. The helical nature of the band-like secondary wall is visible. The vertical band of parenchyma cells just to the left of center is a ray.