. The elements of structural botany [microform] : with special reference to the study of Canadian plants, to which is added a selection of examination papers. Plant anatomy; Botany; Plantes; Botanique. THE MAPLES. 67 agent, nsfer of bo ento- ind are }r class. ihes arc id with the air ncy for impor- found Villow, kind of ; of the appear- merous e scaly ito one id that short wn in ber of ind to jserve om of aniens with thout g but •duces In other trees, the twigs will bo found to resemble Fig. 74. The scaly buds are present, and the clusters of flow- ers within them as before, but the projecthig
. The elements of structural botany [microform] : with special reference to the study of Canadian plants, to which is added a selection of examination papers. Plant anatomy; Botany; Plantes; Botanique. THE MAPLES. 67 agent, nsfer of bo ento- ind are }r class. ihes arc id with the air ncy for impor- found Villow, kind of ; of the appear- merous e scaly ito one id that short wn in ber of ind to jserve om of aniens with thout g but •duces In other trees, the twigs will bo found to resemble Fig. 74. The scaly buds are present, and the clusters of flow- ers within them as before, but the projecthig stamens ar«j wanting. If stanions are present at all, they are short and almost concealed in the calyx, as shown in Fig. 75, where two anthers aro just vi^^ible over the edge of the calyx. The centre of the flower 13 occupied by a syncarpous pistil, having a two celled ovary and two long styles, as shown in the figure. The flowers of tlie Maple, there- fore, being sterile or staminato upon one tree, and fertile or pistillate upon another, are, as in Willow, said to be dioecious ; or, if we take into account the fact that some of the flowers have stamens as well as pistils, we shall more accurately describe the whole inflorescence (or niude of flowering) as iiolijgamo-dioccious. In Maple, as in Willow, the assist- ance of insects is necessary to ensure the transfer of the pollen to the stigma. The flowers are, therefore, entomophilous. After fertilization, a loing is devel- oped from the back of each of the two 7c, carpels, and the pedicels lengthen, so that as the fruit ripens it presents the familiar aspect of hanging clusters of double samaras^ as these winged fruits are called (Fig. 76). Fig. 74.—Twig of Red Maple bearing pistillate flowerg. Fig. 75.—Single pistillate flower. (Wood & Steele.) Fig. 76.—Winged fruit or samara of Fig. 74, Fig. Please note that these images are extracted from scanned page images that may have been digitally enhan
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