. Botany of the living plant. Botany. Fig. 1S9. Diagrams of zygoraorphic flowers. A, of Aconite (Ranunculaceae). B, of the Laburnum (Leguminosae). C, of (Scrophulariaceae). (.\fter Eicliler.} perfect mechanisms for this end are found in zygomorphic flowers. It is a derivative or specialised state, and comparison shows that it has been acquired by modification from the radial state, along many distinct lines of descent. Under these seven headings the most important factors are included which lead to that diversity of floral structure which is so fully illus- trated in the Angiosperms.
. Botany of the living plant. Botany. Fig. 1S9. Diagrams of zygoraorphic flowers. A, of Aconite (Ranunculaceae). B, of the Laburnum (Leguminosae). C, of (Scrophulariaceae). (.\fter Eicliler.} perfect mechanisms for this end are found in zygomorphic flowers. It is a derivative or specialised state, and comparison shows that it has been acquired by modification from the radial state, along many distinct lines of descent. Under these seven headings the most important factors are included which lead to that diversity of floral structure which is so fully illus- trated in the Angiosperms. Examples are described in detail in Appendix A, to which reference should be made. Each individual flower may, in point of final analysis, be regarded as a simple shoot bearing sporangia. Structurally its shoot-nature is evident in the less specialised types, though in the more specialised it may be so hidden by peculiarities of form as to be recognisable only after careful analysis and comparison. The several factors are effective in the most varied combinations, so that the analysis which is required to reduce a complicated structure to terms of construction like that of the leafy shoot may demand both skill and insight. The most obvious end served by the mechanisms that result is the transfer of pollen from the stamen to the carpel. This is a necessary step in normal Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bower, F. O. (Frederick Orpen), 1855-1948. London, Macmillan and co. , limited
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1919
