. The elements of botany embracing organography, histology, vegetable physiology, systematic botany and economic botany ... together with a complete glossary of botanical terms. Botany. 269) are the stamens (Fig. 269, sta), which produce (in the anthers) the pollen grains, the latter homologous with the microspores; and the pistils (Fig. 269, P), in which (ovary) the ovules are produced, which contain the embryo-sacs corre- sponding to the macrospores of the previous division. Enclos- ing and protecting these often grow special organs (slightly modified leaves), called the perianth ; or, when
. The elements of botany embracing organography, histology, vegetable physiology, systematic botany and economic botany ... together with a complete glossary of botanical terms. Botany. 269) are the stamens (Fig. 269, sta), which produce (in the anthers) the pollen grains, the latter homologous with the microspores; and the pistils (Fig. 269, P), in which (ovary) the ovules are produced, which contain the embryo-sacs corre- sponding to the macrospores of the previous division. Enclos- ing and protecting these often grow special organs (slightly modified leaves), called the perianth ; or, when two whorls, corolla (Fig. 269, eor), and calyx (Fig. 269, cal). These, together with the stamens and pistils, and also the axial structure which bears them (Fig. 269, torus), constitute the Flower, whose development in general is as follows: At the end of a stem, protected and concealed by the small leaves, called bud-scales, arise minute papillse, or elevations, forming a peripheral whorl (Fig. 270). These are the first development of the outer- most floral organs, namely, sepals (Fig. 270, «). Imme- diately following them appear another whorl of similar papillae (Fig. 271), situated within the first, and these represent the petals (Fig. 271, P). These two sets grow rapidly, arch over, and protect the essential organs which develop within. i8o. While the two "/f.^»^ f k^ el whorls described above are increasing in size, a third whorl of papillae. Fig. 269, Longitudinal section of a flower; cat calyx ; ear, corolla; se^, sepals; ^ei, petals; sia, stamens; /, pistil; torus, torus: pedun, peduncle. Figs. 270- 273. Diagrammatic representations of the successive stage's in the early develop- ment of a flovrer; s, sepals; /, petals; an, stamens; p, 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 K
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1883
