protophloem

Term: protophloem (n)

Literally meaning: “first-phloem”

Origin: Anc Greek

πρώτος/protos(=first) > πρo/pro-(prefix denoting “in front of”, “towards”, "before")

φλοιός/phlios(=bark, outer layer of a tree)

Definition

Protophloem is the first constructed narrow cell in phloem.