. 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. 40 STKUCTUEAL BOTANY. row; on its back a ridge, and on the face of each lobe a seam, the usual place of dehiscence or opening, all running parallel with the filament and connectile. 114. The stamen, as thus described, may be considered regular or typical in form, and is well exemplified in that of the Buttercup (fig. 83). But the variat
. 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. 40 STKUCTUEAL BOTANY. row; on its back a ridge, and on the face of each lobe a seam, the usual place of dehiscence or opening, all running parallel with the filament and connectile. 114. The stamen, as thus described, may be considered regular or typical in form, and is well exemplified in that of the Buttercup (fig. 83). But the variations of structure are as remarkable here as in other organs, depending on such circumstances as, 1st, the at- tachment of filament to anther. This may occur in three ways. The anther is said to be innate when it stands centrally erect on the top of the filament; adnate when it seems attached to one side of the filament; versatile Avhen connected to the top of the filament by a single point in the back. 2d, The modes of Dehiscence or opening, are also three— viz., valvular, where the seam opens vertically its whole length, which is the usual way; porous, where the cells open by a chink or pore, usually at the top, as in Rhododendron and Potato; opercular, when by a lid opening upward, as in Sassafras, Berberis (92). 3d, The facing of the anther is also an important character. It is introrse when the lines of dehiscence look toward the pistil, as in Violet; exfrorse when they look outward toward the corolla, as in Iris. 4th, The connectile is usually a mere prolongation of the filament, terminating, not at the base, but at the top of the anther. If it fall short, the anther will be emarginate. Sometimes it outruns the anther, and tips it with a terminal appendage of some sort, as in Violet, Oleander, and Paris. Again, its base may be dilated into spurs, as in two of the stamens of Violet. 5th, If the connectile be laterally dilated, as we see gradually done in the various speci
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1870
