. A general system of botany, descriptive and analytical. In two parts. Part I. Outlines of organography, anatomy, and physiology. Part II. Descriptions and illustrations of the orders. By Emm. Le Maout [and] J. Decaisne. With 5500 figures by L. Steinheil and A. Riocreux. Translated from the original by Mrs. Hooker. The orders arranged after the method followed in the universities and schools of Great Britain, its colonies, America, and India; with additions, an appendix on the natural method, and a synopsis of the orders, by Hooker. Botany. THE PISTIL. 67. the placentas are then parietal
. A general system of botany, descriptive and analytical. In two parts. Part I. Outlines of organography, anatomy, and physiology. Part II. Descriptions and illustrations of the orders. By Emm. Le Maout [and] J. Decaisne. With 5500 figures by L. Steinheil and A. Riocreux. Translated from the original by Mrs. Hooker. The orders arranged after the method followed in the universities and schools of Great Britain, its colonies, America, and India; with additions, an appendix on the natural method, and a synopsis of the orders, by Hooker. Botany. THE PISTIL. 67. the placentas are then parietal, and the ovary one-celled {Erythr(ea,&g. 387; Poppy, fig. 388); the septa are complete if their edges meet in the axis of the flower; a prolongation of the receptacle sometimes traverses this axis, which then forms a column (columella: Mallow, Tulip, fig. 389; Campanula, fig. 390); through this column, whether in its origin it be receptacular, or (as is more usual) through the placentas, the nourishment of the ovules is conveyed, as well as through the carpels. When the septa are complete, there are as many cells as carpels, and the compound ovary is two- or more celled {ov. duo- pluri-loculare); and the placentas, united in pairs (two to each carpel), are central. The septa are usually formed from the endocarp of the carpels, with an interposed expansion of the mesocarp. Spurious dissepiments [d. spuria) are vertical or horizontal septa, which are not formed by the union of the inflexed faces of two contiguous carpels; thus, in Astragalus (fig. 391), the solitary carpel is almost two- celled by an intruded vertical plate formed by a fold of the dorsal face; in Flax (fig. 392), where there are ten septa, five project from the midribs of the carpels towards the axis, which they do not always reach. In Datura (fig. 393), the three carpellary ovary is four-celled from the inflexed contiguous faces of the carpels, after uniting in the axis, being reflexed inwards, and meeting
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1873
