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Webster 1913 Edition

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Noun.

[NL. See

, and

(Bot.)

The young tissue of a fibrovascular bundle before its component cells have begun to be differentiated.

Sachs.

procambium ‎(plural procambia)

(botany) A meristem that lies just inside the protoderm and develops into primary xylem and primary phloem.

a meristem that lies just inside the protoderm and develops into primary xylem and primary phloem