showpitted marks, which are deposits of cellulose on the cell walls. Bundles of liber fibres are arranged in concentric rings throughthis part of the bark, hence its name liber layer. On a cross section(see figure i, B) these fibres are composed of hexagonal cells withvery thick walls, having only… … e 6r Jamaica Dogwood. A, longitudinal section. B, cross scrcUoii. a, outer bark or cork. b.middle bark, or green layer, c, inner bark or liber laytr. d. liber bundles, e. medullary rays,f, crystals, x 37 diameters. THE MICROSCOPE. 83 structure to the inside of the bark. On either side of the…
Microscopy
Internet Archive · Biodiversity Heritage Library · Public Domain Mark 1.0. Free to use for anything.
