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| Diagram of the tissues present after a limited amount of secondary growth in a stem like Coleus. The xylem and Phloem have been combined for the sake of simplicity. |  |
| The accumulation of Secondary Xylem creates a pressure within the stem. Consequently, part of the Pith is crushed. |  |
| A
Phellogen (Cork Cambium) may arise in the Cortex. |
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| As Cork (Phellem) accumulates,
the Epidermis dies, cracks and eventually falls away. Isolated regions of the Cork Cambium can become hyperactive and produce Lenticils. |
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