Botany of the Southern states . vary, it fol-lows that the dissepiments, however thin andmembranous they may be, in some cases, are in reality double.All true dissepiments are necessarily vertical, and never hori-zontal, since the inflected margins of leaves could not unite insuch a manner. The number of dissepiments is always equal tothe number of carpels of which the ovary is composed, and thedissepiments are always alternate with the stigmas. A simpleovary can have no dissepiment. Should any fruit be observedwith dissepiments not reconcilable to the above principles, they arecalled spurious

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Botany of the Southern states . vary, it fol-lows that the dissepiments, however thin andmembranous they may be, in some cases, are in reality double.All true dissepiments are necessarily vertical, and never hori-zontal, since the inflected margins of leaves could not unite insuch a manner. The number of dissepiments is always equal tothe number of carpels of which the ovary is composed, and thedissepiments are always alternate with the stigmas. A simpleovary can have no dissepiment. Should any fruit be observedwith dissepiments not reconcilable to the above principles, they arecalled spurious dissepiments. The only common one of-thischaracter with which students will meet, is that occurring in cruciferous plants, asthe Cabbage, Turnip, <fcc, in which theexpansion of the placenta forms a spu-rious dissepiment, stretching from oneside of the ovary to the other. In somecases in which the ovary is composed ofseveral carpels, there exists no dissepi-ment. This arises from one of twocauses. In one case the edges of the. Section of Hibiscus. Fig. 130.