. The bee-keeper's guide; or, Manual of the apiary. Bees. Pollen-Orains, from A. I. Jioot Go. forated, though the inner wall—intine—is not. These perfora- tions are also definite in number within the species. These holes give opportunity for the pollen-tubes (Fig. 2S2, T) to push out after the pollen-grain reaches the stigma of the flower. Where there are no perforations of the extine, the wall breaks. In some cases like orchids, pollen-grains are held together by an adhesive substance. In our milkweeds we notice a similar grouping of pollen-grains (Fig. 227) which often are very dis- turbing
. The bee-keeper's guide; or, Manual of the apiary. Bees. Pollen-Orains, from A. I. Jioot Go. forated, though the inner wall—intine—is not. These perfora- tions are also definite in number within the species. These holes give opportunity for the pollen-tubes (Fig. 2S2, T) to push out after the pollen-grain reaches the stigma of the flower. Where there are no perforations of the extine, the wall breaks. In some cases like orchids, pollen-grains are held together by an adhesive substance. In our milkweeds we notice a similar grouping of pollen-grains (Fig. 227) which often are very dis- turbing to bees and other insects. The composition of pollen, says Goodale, is protoplasmic. 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 Cook, Albert John, 1842-1916. Chicago, Ill. , George W. York & company
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Keywords: ., bo, bookcentury1900, bookdecade1900, booksubjectbees, bookyear1904
