Black Walnut with a separation of bark and wood.
Sample is Black Walnut. W = wood side. MP = Meristematic Point. The IB = The inner bark or phloem. The OB = The corky outer bark or phellem.
The sample is Black Walnut. MP = Meristematic Point. The Blue Arrows are the Point Traces. Do not confuse the traces with wood rays of radial parenchyma.
PICTURE SOURCE SHIGO 2002 CD's