ClipArt ETC
"Transverse section of an open fibro-vascular bundle. c, cambium; cb, continuation of cambium between the fibro-vascular bundles; g, large pitted vessels; t, smaller pitted vessels and spiral vessels intermixed with wood-cells; y, inner phloem layers; bm bast fibers; m is the parenchyma of the pith; r, is the cortical parenchyma. Immediately external to the bark lies the bundle sheath of cells filled with starch." — Encyclopedia Britanica, 1893

Cambium

"Transverse section of an open fibro-vascular bundle. c, cambium; cb, continuation of cambium between…

"Longitudinal section of an open fibro-vascular bundle. c, cambium; s, spiral vessels with fibers which can be unrolled; l, scalariorm reticulated vessel; h, h', h'', h''', wood-cells; t, bordered pitted vessel; t', young pitted vessel; p, inner phloem layer; b, best layer; gs, bundle-sheath; r, cortical parenchyms; m, pith parenchyms. The elements are developed from s to t' in the xylem portion." — Encyclopedia Britanica, 1893

Fibro-vascular Bundle

"Longitudinal section of an open fibro-vascular bundle. c, cambium; s, spiral vessels with fibers which…

"Transverse section of a closed fibro-vascular bundle. r, annular vessel; s, spiral vessel; I, inter-cellular canal; g, pitted vessel; v, cambiform tissue which has become permanent. Between v and s are reticulated vessels. p, surrounding parenchyms. Outer cells a of the bundle are parenchymatous, i marks the inner side of the bundle." — Encyclopedia Britanica, 1893

Fibro-vascular Bundle

"Transverse section of a closed fibro-vascular bundle. r, annular vessel; s, spiral vessel; I, inter-cellular…