. A Manual of botany : being an introduction to the study of the structure, physiology, and classification of plants . Botany. Fig. 653. Fig. 664. verticUs. The same thing is met with in the case of the other whorls, and is well illustrated in the formation of the disk (p. 234). Multi- plication causes a repetition of successive whorls, which still follow the law of alternation. Parts of the flower are often increased by a process of deduplication, unlining, dilammation, or clwrization, the separation of a lamina from organs already formed (p. 210). This is believed to take place in a rem
. A Manual of botany : being an introduction to the study of the structure, physiology, and classification of plants . Botany. Fig. 653. Fig. 664. verticUs. The same thing is met with in the case of the other whorls, and is well illustrated in the formation of the disk (p. 234). Multi- plication causes a repetition of successive whorls, which still follow the law of alternation. Parts of the flower are often increased by a process of deduplication, unlining, dilammation, or clwrization, the separation of a lamina from organs already formed (p. 210). This is believed to take place in a remarkable degree in the case of appendages to petals. Thus, in Eanimculus, the petal (fig. 655) has a scale at its base, a, which is looked upon as .a mere fold of it. This fold may in some cases be more highly developed, as in Oaryophyllacese, and in Crassula rubehs (fig. 282 a), and it may even assume the characters of a stamen, which will therefore be opposite the petal, as iu Primulacese. Some do not consider the production of scales or stamens opposite to the petals as the result of chorization. Lindley argues against it from what is observed in CameUia japonica, in which the petals are usually alternate; but, by cultivation, the law of alternation is interfered with, and the parts are so developed that the petals are opposite, and Fig. 653. Flower of Lychnis Viscaria, one of the Caryophyllaceae, cut lengthwise, to show the relation of its different parts, c, Gamosepalous calyx, p, Petals with their elongated unguis or cla'w, u u, their limb, 11, and the appendages, a a, in the form of dilaminated scales of the petals, e e, Stamens. Pistil consists of the ovaiy, o, and five styles, s. Pro- longation of the axis g, in the form of a gynophore or anthophore, bearing the petals, the stamens, and the pistil. Fig. 654. Flower of Gynandropsis palmipes, one of the Cappari- daccEB. c, Calyx, p, Petals, e. Stamens, ag, Gynophore or elongated intemode or axis bearing the stamens, ag&qu
Size: 1524px × 1640px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1875
