rhytidome


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rhytidome

(ˈrɪtɪˌdəʊm)
n
(Botany) the outer bark of a tree or plant
References in periodicals archive ?
The rhytidome of Pinus halepensis is very acidic pH [56], are only supported by specific species because of their resins [57] and rhytidome is poorer than that of Quercus pubescent [56].
In the anatomical/botanical sense the rhytidome (successive periderms interspersed with the non-conducting phloem) does not exist in the woody monocots, but the successive layers of the cork are separated by suberized undivided cortical cells (Philipp, 1923).
On some bark, gaps appear between the outer rhytidome layers, where one could easily catch an edge and pry pieces away from the trunk.
A variable with industrial bark supplies that can bring consternation is the proportion of outer bark (rhytidome) and inner bark (phloem).
Gross features of bark: The bark is wrinkled with large, thick plates; non collapsed secundary phloem of 2.5 mm, collapsed secundary phloem of 0.8 mm and rhytidome of 5.25 mm.
Outer bark: Remaining single rhytidome was present, made up of a single peridermis with 6 to 10 layers of thin-walled tabulated phellem cells.
In fact, during the extraction process, extractives soluble in alcohol and water are released from the rhytidome cells (Srivastava 1964, Martin and Crist 1970).