Messages

Subject:
Medullary rays
Response To:
clarified answer ()

Mark Hennebury
These are Medullary rays; bands of cells that radiate out horizontally from the pith to the bark and are visible if as Bill mentioned when you saw you log exactly along that line through the pith. These are not particular to any one tree, but common to most. Size of the rays varies by species and patterns by the shape of the tree.

Medullary ray cells in Walnut

Endgrain Lacewood

Endgrain Oak

Endgrain White Oak

Endgrain Maple

Longgrain Rays

Maple rays

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