. Foundations of botany. Fig. 140.— Flower of , entire flower (magnified); II, vertical section (magnified). symmetrical, since it has five sepals, five petals, ten sta-mens, and five carpels. Roses, mallows, and mignonette STRUCTURE OF THE FLOWER AND ITS ORGANS 199 are familiar examples of flowers which are unsymmet-rical because they have a large, indefinite number ofstamens ; the portulaca is unsymmetrical, since it has twodivisions of the calyx, five or six petals, and seven totwenty stamens. 210. The Receptacle. — The parts of the flower areborne on an expansion of the peduncle
. Foundations of botany. Fig. 140.— Flower of , entire flower (magnified); II, vertical section (magnified). symmetrical, since it has five sepals, five petals, ten sta-mens, and five carpels. Roses, mallows, and mignonette STRUCTURE OF THE FLOWER AND ITS ORGANS 199 are familiar examples of flowers which are unsymmet-rical because they have a large, indefinite number ofstamens ; the portulaca is unsymmetrical, since it has twodivisions of the calyx, five or six petals, and seven totwenty stamens. 210. The Receptacle. — The parts of the flower areborne on an expansion of the peduncle, called the recep-tacle. Usually, as in the flower of the grape (Fig. 250),this is only a slight enlargement of the peduncle, but in
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectplants, bookyear1901
