Introduction
Epidermis
Cortex
Leaves
Spines
Poisons
Wood
Root Succulence
Apical Meristems
Cephalia
Flowers
Travel
Published papers
Back Lophophora williamsii. The top blue portion is shoot (covered with epidermis), most of the lower part is subterranean shoot (covered in bark). The very lowest part (just below the attachment of the side shoot) is the taproot.