. Essentials of botany. Botany; Botany. 68 ESSENTIALS OF BOTANY Examine a vegetable sponge (Luffa), sold by druggists, and notice that it is simply a network of fibro-vascular bundles. It is the skele- ton of a tropical seed-vessel or fruit, very much like that of the wild cucumber common in the Central States, but a great deal larger. The different layers of the bark cannot all be well recognized in the examination of a single kind of stem. Examine (a) the cork. Fig. 39. Diagrammatic Cross-Section of an Annual Dicotyledonous Stem. (Somewhat magnified.) p, pith; fv, woody or fibro-vascular bun
. Essentials of botany. Botany; Botany. 68 ESSENTIALS OF BOTANY Examine a vegetable sponge (Luffa), sold by druggists, and notice that it is simply a network of fibro-vascular bundles. It is the skele- ton of a tropical seed-vessel or fruit, very much like that of the wild cucumber common in the Central States, but a great deal larger. The different layers of the bark cannot all be well recognized in the examination of a single kind of stem. Examine (a) the cork. Fig. 39. Diagrammatic Cross-Section of an Annual Dicotyledonous Stem. (Somewhat magnified.) p, pith; fv, woody or fibro-vascular bundles; e, epidermis; 6, bundles of hard bast fibers of the 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 Bergen, Joseph Y. (Joseph Young), 1851-1917. Boston, Ginn
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