Clipart tagged: ‘medullary ray frequency’

"Outline of tangential section of wood of oak, to show frequency of medullary rays. The section is 1 mm. square. The number of rays shown is below the average for woodyplants." -Stevens, 1916

Oak Wood

"Outline of tangential section of wood of oak, to show frequency of medullary rays. The section is 1…

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