. A manual of botany. Botany. Fig. 700. Fi(i. 699. DeTelopment of lysigenous gland in stem of Hypericiwi. The four figures represent successive stages, x 250. hand, they are unbranched and much like sieve tubes in form, consisting as they do of long, broad cells with sieve-like septa. They were first noticed by Hanstein in the scales of the bulb of Allium. Glandular Tissue.—This has a much more limited distribution than the laticiferous tissue. It consists of single cells or of masses of cells of various shapes, sometimes long columns, sometimes ovoid or rounded collections. Thecellswhich comp
. A manual of botany. Botany. Fig. 700. Fi(i. 699. DeTelopment of lysigenous gland in stem of Hypericiwi. The four figures represent successive stages, x 250. hand, they are unbranched and much like sieve tubes in form, consisting as they do of long, broad cells with sieve-like septa. They were first noticed by Hanstein in the scales of the bulb of Allium. Glandular Tissue.—This has a much more limited distribution than the laticiferous tissue. It consists of single cells or of masses of cells of various shapes, sometimes long columns, sometimes ovoid or rounded collections. Thecellswhich compose these masses are dis- tinguished by their power of forming peculiar, generally aromatic, sub- stances, which either remain stored in the cells or are passed out into intercellular spaces or cavities or to the exterior. The cells are usually parenchymatous and filled with very granular protoplasm. The collections of such cells are commonly called glands, a name which is also applied to the cavities con-. Fi'J- 700. Scbizogenous resin- duct in the young stem of the Ivy {Hedtira helix)^ transverse section ( X 400). a. An early; B, a later, stage, f/. The resin- Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Green, J. Reynolds (Joseph Reynolds), 1848-1914. London, J. & A. Churchill
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