Inside stemsI. Herbaceous stems

A. EpidermisB. Cortex and pithC. Vascular bundles: primary xylem and phloem

II. Stem thickening: woodA. Development of vascular cambiumB. Cork cambiumC. Other features of wood

1. sapwood and heartwood2. vascular rays3. growth rings

III. Monocot stems

I. Herbaceous stemsA. EpidermisB. Cortex and pithC. Vascular bundles: primary xylem and phloem

cuticle

cortex

II. Stem thickening: wood

A. Development of vascular cambiumB. Cork cambium

C. Other features of wood

1. sapwood and heartwood2. vascular rays3. growth rings

Conifer wood and dicot wood

Tracheids Vessel elements

III. Monocot stems

The end