. Elements of botany. Plants. STRUCTURE OF THE FLOWER AND ITS ORGANS. 145 petals have fallen and the seed has ripened. The receptacle of the rose, Fig. 120, is hollow and the pistils arise from its interior surface. 178. Imjyerfect or Separated Flowers. — The stamens and pistils may be produced in separate flowers, which are, of course, imperfect. This term does not imply that such flowers do their work any less perfectly than others, but only that they have not both kinds of essential organs. In the very simple imperfect flowers of the willow, Fig. 121, each flower of the catkin. Fig. 108, co
. Elements of botany. Plants. STRUCTURE OF THE FLOWER AND ITS ORGANS. 145 petals have fallen and the seed has ripened. The receptacle of the rose, Fig. 120, is hollow and the pistils arise from its interior surface. 178. Imjyerfect or Separated Flowers. — The stamens and pistils may be produced in separate flowers, which are, of course, imperfect. This term does not imply that such flowers do their work any less perfectly than others, but only that they have not both kinds of essential organs. In the very simple imperfect flowers of the willow, Fig. 121, each flower of the catkin. Fig. 108, 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 different plants, as they are in the willow, or they may be borne on the same plant, as in the hickory and the hazel, among trees, or in the castor-oil plant, Indian corn, and the begonias. When staminate and pis- tillate flowers are borne on separate plants, such a plant is said to be dioecious, that is, of-two-households; when both kinds of flower appear on the same individual, the plant is said to be vioiiKcious, that is, of-one-household. 179. Study of Imperfect Flowers.—Examine, draw, and describe the imperfect flowers of some of the following dioecious plants and one of the monoecious plants i :. Fig. 120.—A Longitudinal Sec- tion. Dioecious plants Monoecious plants early meadow rue, willow, poplar. walnut, oak, chestnut, hickory, alder, beech, birch, hazel, begonia. 1 For figures and descriptions of these or allied flowers consult Gray's Mamial of Botany, Emerson's Ti-ces and Shrubs of Massachusetts, Newhall's T?-ees of the Northern United States, or Le Maout and Decaisne's Traits General de 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
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectplants, bookyear1896
