. Essentials of botany. Botany; Botany. THE FLOWER OF THE HIGHER SEED-PLANTS 149. following one, and all the members of each whorl are alike (Fig. 98). 176. Suppression and Multiplication of Whorls. â Any whorl or part of a whorl may be suppressed. If one set of parts of the perianth is lacking, this is assumed to be the corolla and the flower is said to be apetalous (Fig. 99). Multiplication of whorls is particu- larly frequent among the stamens, but other whorls may also show it (see Figs. 117, 118). 177. Unisexual Flowers The sta- mens and pistils may be produced in ^i°- ^^- ^Petalous â¢â
. Essentials of botany. Botany; Botany. THE FLOWER OF THE HIGHER SEED-PLANTS 149. following one, and all the members of each whorl are alike (Fig. 98). 176. Suppression and Multiplication of Whorls. â Any whorl or part of a whorl may be suppressed. If one set of parts of the perianth is lacking, this is assumed to be the corolla and the flower is said to be apetalous (Fig. 99). Multiplication of whorls is particu- larly frequent among the stamens, but other whorls may also show it (see Figs. 117, 118). 177. Unisexual Flowers The sta- mens and pistils may be produced in ^i°- ^^- ^Petalous â¢â ^ ^ . . - Flower of (European) separate flowers, which are unisexual -^m Ginger. (often called imperfect) flowers. In the very simple unisexual flowers of the willow (Fig. 100) each flower of the catkin (Appendix I, Fig. 6) consists merely of a pistil or a group of (usually two) stamens springing from the axil of a small bract. Staminate and pistillate flowers may be borne on dif- ferent plants, as they are in the willow, or they may be borne on the same plant, as in the castor-oil plant, Indian corn, and the begonias. When staminate and pistillate flow- ers are borne' on separate plants, such a plant is said to be dimcious (of two house- holds); when both kinds of flower appear on the same individual, the plant is said to be monoecious (of one household).. 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 Bergen, Joseph Y. (Joseph Young), 1851-1917. Boston, Ginn
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