The elements of botany for The elements of botany for beginners and for schools elementsofbotany00gray Year: 1887 litJS that is, having neither stamens nor pistil. But in Asters, Daisies, Golden-rods, and the like, these ray-flowers are pistillate and fertile, serving therefore for seed-bearing as well as for show. Let it not be supposed that the show is useless. See Section XIII. 269. Adnation, or Consolidation, is the union of the members of parts belonging to different circles of the flower (256). It is of course under- stood that in this (as likewise in coalescence) the parts are not f
The elements of botany for The elements of botany for beginners and for schools elementsofbotany00gray Year: 1887 litJS that is, having neither stamens nor pistil. But in Asters, Daisies, Golden-rods, and the like, these ray-flowers are pistillate and fertile, serving therefore for seed-bearing as well as for show. Let it not be supposed that the show is useless. See Section XIII. 269. Adnation, or Consolidation, is the union of the members of parts belonging to different circles of the flower (256). It is of course under- stood that in this (as likewise in coalescence) the parts are not formed and then conjoined, but are produced in union. They are born united, as the term adnate implies. To illustrate this kind of union, take the accompany- ing series of flowers (Fig. 270-274), shown in vertical section. In the first, Fig. 270, Flax-flower, there is no adnation; sepals, petals, and sta- mens, are free as well as distinct, being separately borne on the receptacle, one circle within or above the next; only the five pistils have their ovaries coalescent. In Fig. 271, a Cherry-flower, the petals and stamens are borne on the throat of Ihe calyx-tube ; that is, the sepals are coalescent into a cup. and the petals and stamens are adnate to the inner face of this; in other Fig. 268. Head of flowers of a Coreopsis, divided lengthwise. Fig. 269. A slice of the preceding more enlarged, with one tubular perfect flower (a) left, standing on the receptacle, with its bractlet or chaff (!>), one ligulate and neutral ray-flower (cc), and part of another; dd, section of bracts or leaves of the involucre.
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