. Physiological botany; I. Outlines of the histology of phænogamous plants. II. Vegetable physiology. Plant physiology; Plant anatomy. 174 MINUTE STRtrCTtJRE O** THE FLOWEE. 489. But if the ovaries, instead of being superior, as those in Fig. 133, are inferior, as tliose in Fig. 134, furtlier complications are caused. The fibro-vaseular bundles of the several floral whorls united with the pistil are distributed in cu-cles in the parencliynia tissue of the ovary. Thus in Fig. 134 a, we find Ave such circles, corresponding to the calyx, corolla, stamens, and dorsal and ventral sutures of the car
. Physiological botany; I. Outlines of the histology of phænogamous plants. II. Vegetable physiology. Plant physiology; Plant anatomy. 174 MINUTE STRtrCTtJRE O** THE FLOWEE. 489. But if the ovaries, instead of being superior, as those in Fig. 133, are inferior, as tliose in Fig. 134, furtlier complications are caused. The fibro-vaseular bundles of the several floral whorls united with the pistil are distributed in cu-cles in the parencliynia tissue of the ovary. Thus in Fig. 134 a, we find Ave such circles, corresponding to the calyx, corolla, stamens, and dorsal and ventral sutures of the carpel. The bundles in Fig. 134 a are arranged in radial lines from the centre outwards ; the six bundles nearest the centre of the ovary are those of the ventral sutures, and have wood outside and liber inside ; in the next circle the three with reverse arrangement of elements are those of the dorsal sutures from which the bundles just spoken of branched. In Fig. 134 b, all the fibro-vascular bundles save those of the carpels 'e \ u ^ are united to form a single circle, thus giv- ing rise to the three circles of bundles seen in the cross- section, and at the base of the ovary even these did not exist separate. In Fig. 134 c, the bun- dles of all the floral whorls are blended for a considerable height in the ovary ; finally, the bundles of the ventral sutures become separated from the rest, which continue united throughout, formmg the large buurlles seen on the periphery of the ovary in Fig. 134 c. The arrangement of the bundles in this figure should be compared with that in Fig. 133. 490. The structure of the peduncle and the pedicels is sub- stantially the same as that of the stem, and the structure of. Fig. 134 Transverse section of the inferior ovary, allowing tlie arrangement of libro- vascular bundles both in the carpels and the external parts of the flower: a, AlstrcB- meria versicolor, the fascicles of the whorls independent; 6, Galanthus nivalis, the fascicles no longer
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectplantanatomy, bookyea
