Cheadle, Vernon I. University of California, Santa Barbara, California.
Esau, Katherine Formerly, Department of Botany, University of California, Santa Barbara, California.
- Kinds of xylem cells
- Primary and secondary xylem
- Softwood and hardwood
- Links to Primary Literature
- Additional Readings
The principal water-conducting tissue and the chief supporting system of higher plants. This tissue and the associated phloem constitute the vascular system of vascular plants. Xylem is composed of various kinds of cells, living or nonliving. The structure of these cells differs in their functions, but characteristically all have a rigid and enduring cell wall that is well preserved in fossils.
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