. The essentials of botany. Botany. &R0S8 ANATOMY Of FLOWERING PLANTS. XXXV rounded by the tubular sheath composed of adnate calyx, corolla, and androecium. In some nearly related cases, in addition to the structures described above as perigynous, there is a complete fusion of the calyx, corolla, and stamen bearing tube -with the gynoecium, so that the ovule-bearing portion of the latter is below the rest of the flower. The perianth and the stamens are said to be epigynous in such flowers, and the ovary is inferior. (Fig. XXXy.) Some cases of epigyny are doubtless to be re- garded as due t
. The essentials of botany. Botany. &R0S8 ANATOMY Of FLOWERING PLANTS. XXXV rounded by the tubular sheath composed of adnate calyx, corolla, and androecium. In some nearly related cases, in addition to the structures described above as perigynous, there is a complete fusion of the calyx, corolla, and stamen bearing tube -with the gynoecium, so that the ovule-bearing portion of the latter is below the rest of the flower. The perianth and the stamens are said to be epigynous in such flowers, and the ovary is inferior. (Fig. XXXy.) Some cases of epigyny are doubtless to be re- garded as due to the adnation of the calyx, corolla, stamens, and ovaries; in others the ovaries are adnate to the hollow axis which. Fio. XXX. V1.—Heterostyled flowers of Primrose, showing the long-styled form in the left-hand figure, and the short-styled form in the figure on the right (From Darwin.) bears the perianth and stamens; in still others it seems probable that the hollow axis is itself ovule-bearing, and that the true carpels are borne on its summit. Certain terms descriptive of relations between the stamens and pistils which have recently come into use require explanation here. Relative Ternns.—In many flowers the stamens and pistils da not mature at the same time—such are said to be dichogamous; when the stamens mature before the pistils the flower is proter- and/roiu; and when the pistils mature before the stamens they are. 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 Bessey, Charles E. (Charles Edwin), 1845-1915. New York : H. Holt and company, ;
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