. A manual of botany. Botany. MOKPHOLOGY OF EEPEODUCTIVE OEGANS 149 ovules are not developed upon the carpellary leaves, the thala- mus becomes prolonged into the cavity of the ovary and forms the placenta {fig. 438). At other times the thalamus becomes prolonged beyond the ovary, as in the Geraniaoeffi and Um- belhferse; this prolongation is terraed a carxoophorc. In the species of Geranium (fig. 443, c), this carpophore forms a long beak-hke process, to which the carpels, car, are attached, and from vifhich they separate when tlie fruit is ripe. In many cultivated flowers, as in the Rose, th
. A manual of botany. Botany. MOKPHOLOGY OF EEPEODUCTIVE OEGANS 149 ovules are not developed upon the carpellary leaves, the thala- mus becomes prolonged into the cavity of the ovary and forms the placenta {fig. 438). At other times the thalamus becomes prolonged beyond the ovary, as in the Geraniaoeffi and Um- belhferse; this prolongation is terraed a carxoophorc. In the species of Geranium (fig. 443, c), this carpophore forms a long beak-hke process, to which the carpels, car, are attached, and from vifhich they separate when tlie fruit is ripe. In many cultivated flowers, as in the Rose, the thalamus some- times acquires a monstrous development, and becomes extended beyond the flower into a branch bearing foliage leaves fig. 279). To this prolongation of the axis beyond the flower the term medianprolificatIon is usually applied. In some plants the last internode of the thalamus becomes elongated and forms a stalk to the ovary, to which the term gynopliore has been applied; this sometimes happens also between the perianth and the sporopliylls. Examples may be seen in some of the Capparidacese (fig. 280, thai) ; in the Pink {fig. 405, g), Dictamnus {fig. 427, g), and Xanthoxylon {fig. in, g). Sometimes the thalamus presents certain modifications of form which are seen between the floral whorls. They are due Fia. 281. Fig. 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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