. Domestic botany. Botany, Economic; Botany. OEGANS OF KEPEODUCTION. 45 In St. John's wort, and some of the Australian myrtle family, a number of filaments are united together at their base in three or more bundles surrounding the pistil. In the Composite family, the anthers are linear and united by their edges, forming a tube, while their fila- ments are free (fig. 4, a). These four modes of union characterize the sixteenth, seventeenth, eighteenth, and nineteenth classes of Linnaeus.* In the twentieth class of Linnaeus, which includes the great family of Orchids (fig. 4, b), the stamens are
. Domestic botany. Botany, Economic; Botany. OEGANS OF KEPEODUCTION. 45 In St. John's wort, and some of the Australian myrtle family, a number of filaments are united together at their base in three or more bundles surrounding the pistil. In the Composite family, the anthers are linear and united by their edges, forming a tube, while their fila- ments are free (fig. 4, a). These four modes of union characterize the sixteenth, seventeenth, eighteenth, and nineteenth classes of Linnaeus.* In the twentieth class of Linnaeus, which includes the great family of Orchids (fig. 4, b), the stamens are borne above the pistil, both of which are of a special nature, as also those of the. Swallow-wort family (fig. 4, c and d). (See character of these families.) When the stamens are numerous in a flower, they ge- nerally vary in length; but in the Labiate and Cruci- ferous families they are always of a definite length with regard to one another. In the former, there are four— two long and two short (fig. 3, a) ; in the latter, six— four long and two short (fig. 3, b). These characterize the fourteenth and fifteenth classes of Linnaeus. Stamens present three modes of attachment:—First, * See 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 Smith, John, 1798-1888. London, L. Reeve and co.
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