. A manual of the medical botany of North America [microform]. Botany, Medical; Botany; Botanique médicale; Botanique. 38 ELEMENTS OF BOTANY. FUNCTIONS OF THE FLOWER. The only function of the flower which requires our attention is the re- production of thG species. T'le manner in -which this is accomplished is sufliciently simple, and, to one acquainted with the phenomena of reproduction in animals, readily understood. As the flower expands the anthers expel tlieii* pollen through pores or Flo. 73.—An nnthnr opon- ing by i)ores of at the , FlQ. 71.—An nnthor op'in- ing by viilves
. A manual of the medical botany of North America [microform]. Botany, Medical; Botany; Botanique médicale; Botanique. 38 ELEMENTS OF BOTANY. FUNCTIONS OF THE FLOWER. The only function of the flower which requires our attention is the re- production of thG species. T'le manner in -which this is accomplished is sufliciently simple, and, to one acquainted with the phenomena of reproduction in animals, readily understood. As the flower expands the anthers expel tlieii* pollen through pores or Flo. 73.—An nnthnr opon- ing by i)ores of at the , FlQ. 71.—An nnthor op'in- ing by viilves Fio. 75.—Anthrr- rtcnoslt! r poHen directly on tho Btigmo, through which the pollen-tubes are seen pauKlng to the ovules. valves openea for this pui-pose (Figs. 73 and 74). The pollen is either shed directly on the stigma or is carried there by the wind or by insects, and once there it is retained by a glutinous secretion of the stigma (Fig. 75). Frc^.n each pollen-cell (Fig. 70) is then protruded a minute tube, the poUen-tubc, which insinuates itself through the stigma, and coutiuuiug its. 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 Johnson, Laurence, 1845-1893. New York : W. Wood
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Keywords: ., boo, bookcentury1800, booksubjectbotany, booksubjectbotanymedical
