. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. Fig. 356. Aristoloclna ClemalMs, L. (after Sachs). A piece of stem (j/>, with a petiole (4), in thu axil of which a number of flowers are situatt^d. I. Younjr still unfertilized flowers; 2, fertilized <Io., directed downwards (natural size). A and B. Flowers before and after pollination, in section (enlarged). a, anthers ; f, inferior ovary ; k, trap: kf, ovary in section ; /(in left-hand Ggure), limb of perianth, (m . /) a trapped insect; «, stigma ;
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. Fig. 356. Aristoloclna ClemalMs, L. (after Sachs). A piece of stem (j/>, with a petiole (4), in thu axil of which a number of flowers are situatt^d. I. Younjr still unfertilized flowers; 2, fertilized <Io., directed downwards (natural size). A and B. Flowers before and after pollination, in section (enlarged). a, anthers ; f, inferior ovary ; k, trap: kf, ovary in section ; /(in left-hand Ggure), limb of perianth, (m . /) a trapped insect; «, stigma ; r, perianth tube. Correns (op. cit., p. i6q footnote) says that Sprengel's figure is better than the one from Sachs Iiere given, for it represents the hairs in the trap as', minute prickles, and the weel-hairs as withered at the beginning of the second stage. force the hair against the wall, the joint-cell undergoing torsion. The chief obstacle to an insect's escape is to be found in the fact that the weel-hairs are considerably longer than half the width of the perianth tube. They therefore usually cling together in front of the barrier, so as to render escape 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 Knuth, Paul, 1854-1899; Knuth, Paul, 1854-1899; Mu?ller, Hermann, 1829-1883; Ainsworth Davis, J. R. (James Richard), 1861-1934. Oxford : Clarendon Press
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