Axis roller

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Types of protosteles Types of dismembered stele

Axial roller, stela - inner layer in primary root and stem (after peel and primary bark).

In Polish botanical literature, the name "axial roller" is sometimes restricted to the root.

The root axis roll consists of the following tissues:

The axial shaft of the stem is a protostela, ie, a conductive tissue roll without inner core, siphonostela, or a conducting tissue ring, or more diffuse (diktiostela, eustela, atactostela). Bibliography

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