. The American botanist and florist: including lessons in the structure, life, and growth of plants; together with a simple analytical flora, descriptive of the native and cultivated plants growing in the Atlantic division of the American union. Botany; Botany. IIxFLORESCENCE. 115 which determines ihe arrangement of the leaves. Accordingly, the flower-bud is always found either terminal or axillary. In either case, a single bud may develop either a compound inflo- rescence, consisting of several flowers with their stalks and bracts, or a solitary inflorescence, consisting of a single flower, 3
. The American botanist and florist: including lessons in the structure, life, and growth of plants; together with a simple analytical flora, descriptive of the native and cultivated plants growing in the Atlantic division of the American union. Botany; Botany. IIxFLORESCENCE. 115 which determines ihe arrangement of the leaves. Accordingly, the flower-bud is always found either terminal or axillary. In either case, a single bud may develop either a compound inflo- rescence, consisting of several flowers with their stalks and bracts, or a solitary inflorescence, consisting of a single flower, 343. The Peduncle is the flower-stalk. It bears no leaves, or at least only such as are reduced in size and changed in form, called bracts. If the peduncle is wanting, the flower is said to be sessile. The simj^le peduncle bears a single flower; but if the j^eduncle be divided into branches, it bears several flowers, and the final divisions, bearing each a single flower, are called pedicels. The main stem or axis of a compound peduncle is called the rachis. 344. The Scape is a flower-stalk which springs from a subter- ranean stem, in such plants as are called stemless or acaulescent; as the Primrose, Tulip, Bloodroot. Like the peduncle, it is leaf- less or with bracts only, and may be either simple or branched. The flower-stalk, whether peduncle, scape, or pedicel, always terminates in the torus (§ hf).. Brads (h, b, h).—430, Cornus Canadensis, with an inrolucre of 4 colored bracts. 431, Hepatica triloba, with au involucre of 3 green bracts. 432, Calla palustris, with a colored spathe of one bract. 345. Bracts. The branches of the inflorescence arise from the axils of reduced leaves, called bracts. Those leaves, still smaller, growing upon the pedicels, are called bractlets. Bracts are usually simple in outline and smaller than the leaf, often gradually diminishing to mere points, as in Aster, or even totally. Please note that these images are extracted from scanned page imag
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1870
