root sheath


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root sheath

[′rüt ‚shēth]
(geology)
A hollow root cast.
References in periodicals archive ?
On the ends of these fibres, a thick column of stained inner root sheath was carried by shed fibre forming a club like structure (Plate 1).
Several thin or sometimes two thick columns of stained inner root sheath were carried by shed fibres, forming a brush like structure (Plate 2).
A thin stepwise layer of stained inner root sheath was carried by shed fibres forming a step like structure (Plate 3).
Nitrogen fixation associated with sand grain root sheaths (rhizosheaths) of certain xeric grasses.