. The essentials of botany. Botany. Fia. 120.—A cluster of staminate cones or flowers. 4, of a Pine (Hnus sylves- tris), with a detached stamen. Natural size. B^ showing the two pollen-sacs. Considerably magnified. may be understood from a study of those of the pines. The pollen-bearing flowers—staminate flowers, as they are. Fio. 121.—Pollen-cells of Gymnosperms. A, of a Oyoad; y, rudimentaiT fl"^' stage (prothallium), one pollen-cell germinating. B, pollen-eells of a Pine, side and top views, showing bladder-like enlargements of outer cell-wall, W; the rudimentary protballiuBi is shown
. The essentials of botany. Botany. Fia. 120.—A cluster of staminate cones or flowers. 4, of a Pine (Hnus sylves- tris), with a detached stamen. Natural size. B^ showing the two pollen-sacs. Considerably magnified. may be understood from a study of those of the pines. The pollen-bearing flowers—staminate flowers, as they are. Fio. 121.—Pollen-cells of Gymnosperms. A, of a Oyoad; y, rudimentaiT fl"^' stage (prothallium), one pollen-cell germinating. B, pollen-eells of a Pine, side and top views, showing bladder-like enlargements of outer cell-wall, W; the rudimentary protballiuBi is shown here also. Much 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 Bessey, Charles E. (Charles Edwin), 1845-1915. New York, Holt
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1884
