PITH
Dictionary of Science, Literature and Art · 1842 · p. 35
A cylindrical or angular column of cellular ti ue, arising at the neck of the stem of a Dicotyledonous plant, and terminating at the leaf-buds, with all of which, whether they are lateral or terminal, it is in direct communication. It forms the centre of a stem, and is covered over by the wood. Its use is to act as a reservoir of nutritious matter for the young leaves when first developing. [s. 943]
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