. Fundamentals of botany. Botany. LOSS OF WATER 33 ing matter, but the smaller cells contain numerous green bodies. The green substance is chlorophyll (leaf-green), and the separate green particles are chlorophyll-bodies, or chloroplasis. Between each pair of smaller cells is a tiny hole or stoma (from a Greek word meaning mouth or opening), and the two cells are the guard-cells of the stoma (plural, stomata) (Fig. 26). The structure of the upper epidermis of the same leaf (Fig. 23) is seen to be quite similar to that of the Fig. 26.—Photomicrograph of stomata from a leaf of Verbena ci
. Fundamentals of botany. Botany. LOSS OF WATER 33 ing matter, but the smaller cells contain numerous green bodies. The green substance is chlorophyll (leaf-green), and the separate green particles are chlorophyll-bodies, or chloroplasis. Between each pair of smaller cells is a tiny hole or stoma (from a Greek word meaning mouth or opening), and the two cells are the guard-cells of the stoma (plural, stomata) (Fig. 26). The structure of the upper epidermis of the same leaf (Fig. 23) is seen to be quite similar to that of the Fig. 26.—Photomicrograph of stomata from a leaf of Verbena ciliata, showing their condition at 9 (After Lloyd.) except that in most plants there are fewer stomata in the upper than in the lower epidermis. In some leaves {, barberry, osage orange, hlac) there are no stomata in the upper epidermis; while in other plants, such as, for ex- ample, the water-lily whose leaves float on water, there are stomata in the upper epidermis but none in the lower. 35. Microscopic Structure in Cross-section.—Since all objects examined with the aid of a microscope are observed with transmitted light, that is, by light that passes through. 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 Gager, C. Stuart (Charles Stuart), 1872-1943. Philadelphia, P. Blakiston's son & co.
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