. 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. 74 OEGANOGEAPHY AND GLOSSOLOGY. bearing at its
. 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. 74 OEGANOGEAPHY AND GLOSSOLOGY. bearing at its base two ovules witb a gaping micropyle; after fertilization, these carpels thicken, harden, and become appressed, and form closed cavities wtich protect the seeds during their ripening. TORUS, DISK, NECTARIES. The torus is the ^art of^he receptacle situated between the calyx and the pistil on which the corolla and androecium are inserted. It is merely the periphery of the receptacle, and not a special organ; but for convenience of description it is so considered. The torus produces, besides stamens and petals, nectariferous glands and sundry. 442, Columbine. Pistil surrounded by scales. Torus showing the scars left by the stamens (mag.). 443, Tree Peony. Flower without the corolla and most of the stamens. 444. White Water-I41y. Pistil and cup bearing the petals and stajnens. 445. Orange. Vertical section of pistil and receptacle. 1, torus ; c, calyx. expansions analogous to petals or stamens. Thus, in the Columbine (fig. 442), between the androecium and the pistil, are ten membranous silvery white scales, with folded edges, larger at the base than at the top, which may be considered as filaments, and Avhich sometimes bear an anther at their extremity. In the Tree Peony (fig. 443), the thick swollen torus elongates into a membranous cup surrounding the carpels, without adhering to them, and open at the top to afford a passage to the stigmas: it appears to form a part of the fru
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1873
