Pith
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Pith, or medulla, is a tissue in the stems of vascular plants. Pith is composed of soft, spongy parenchyma cells, which in some cases can store starch. In eudicotyledons, pith is located in the center
Elder shoot cut longitudinally to show the broad, solid pith (rough textured, white) inside the wood (smooth, yellow tinged). Scale in millimeters.
The tiny central dark spot (diameter: about 1 millimeter (0.039 in)) in this yew wood is the pith.
Sambucus
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Sambucus is a genus of between 20 and 30 species of flowering plants in the family Viburnaceae. The various species are commonly referred to as elder, with the flowers as elderflower, and the fruit as
Pith
…tools. It is used to remove oil from the tips of tools to prevent the contamination of watch movements. A pith wood consists of a piece of pith (such as elder or mullein). Dried pith (which is actually the center of the leaf) of certain rush plants soaked in fat or grease, held using a rushlight, was used as…
Sambucus berries
S. canadensis branches and inflorescence
Inflorescence of S. canadensis
Flowers of S. nigra