Hermanophyton taylorii End Cut off Limb (Specimen 2)
9 cm diameter

The images below were taken with a Dino-Lite AD7013 MT 5.0 MP and resized in Adobe Photoshop CS6. The first image shows a segment of a xylem wedge at 150x. The second image shows the transition zone between the secondary xylem wedge and the outer cortex at 250x.