coleorhiza


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co·le·o·rhi·za

 (kō′lē-ə-rī′zə, kŏl′ē-)
n. pl. co·le·o·rhi·zae (-zē)
A protective sheath enclosing the embryonic root of grasses.

[New Latin : Greek koleon, sheath; see kel- in Indo-European roots + Greek rhiza, root; see wrād- in Indo-European roots.]

coleorhiza

(ˌkɒlɪəˈraɪzə) or

coleorrhiza

n, pl -zae (-ziː)
(Botany) a protective sheath around the radicle in grasses
[C19: from New Latin, from Greek koleon sheath + rhiza root]

co•le•o•rhi•za

(ˌkoʊ li əˈraɪ zə, ˌkɒl i-)

n., pl. -zae (-zē).
the sheath that encloses the primary root in embryonic grasses.
[1865–70; < New Latin < Greek koleó(n) sheath, scabbard + rhíza root1]
References in periodicals archive ?
Stevenson (1990, page 20), however, is of the opinion that a tree coleorhiza is unique to the grasses and that cycads do not have a true coleorhiza.
The question now arises whether this structure should be called a coleorhiza or something else.
The root apex is initially covered by a coleorhiza, and the