The flower and the bee; plant life and pollination . s, nowloaded with pollen, to escape and fly to the pistillate spathes of the latter wither less promptly, but from thepoint of view of the jacks this is of little consequence,since pollination has been effected; but it is fatal to many ofthe flies which, unable to escape, perish in the arum family includes many tropical forms, like thecalla-lily; about the pollination of most of these very little isknown and undoubtedly many remarkable facts await dis-covery. The peculiar-shaped Dutchmans-pipe {Aristolochia sipho)is po
The flower and the bee; plant life and pollination . s, nowloaded with pollen, to escape and fly to the pistillate spathes of the latter wither less promptly, but from thepoint of view of the jacks this is of little consequence,since pollination has been effected; but it is fatal to many ofthe flies which, unable to escape, perish in the arum family includes many tropical forms, like thecalla-lily; about the pollination of most of these very little isknown and undoubtedly many remarkable facts await dis-covery. The peculiar-shaped Dutchmans-pipe {Aristolochia sipho)is pollinated in a manner very similar to that of jack-in-the-pulpit; but the flowers are perfect, i. e., contain both stamensand pistils. The calyx hangs downward, is about an inch anda half long, bent like the letter S, constricted in the middle,with the bowl-end of the pipe narrowed at the throat and verysmooth within. After they have once entered this tubularpassageway small flies are unable to fly or creep out until thecalyx withers. (Fig. 83.) 168.
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