. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. I"IG. 74. Dictamnus a/6us, L. (Froin nature.) A. Flower in the Grst {male) condition: the anthers (<21 occupy the entrance to the flower. B. Flower in the second condition: the stigma (j) protrudes from among the stamens. (Natural size.) 178. Dictamnus Tourn. Protandrous hymenoplerid flowers. 606. D. albus L. (Delpino, ' Ult. oss.,' p. 145 ; Hildebrand, Bot. Ztg., Leipzig, .x.^viii, 1870; Loew, ' BlUtenbiol. Floristik,' p. 214 ; Urban, Jahrb. bot. Ga
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. I"IG. 74. Dictamnus a/6us, L. (Froin nature.) A. Flower in the Grst {male) condition: the anthers (<21 occupy the entrance to the flower. B. Flower in the second condition: the stigma (j) protrudes from among the stamens. (Natural size.) 178. Dictamnus Tourn. Protandrous hymenoplerid flowers. 606. D. albus L. (Delpino, ' Ult. oss.,' p. 145 ; Hildebrand, Bot. Ztg., Leipzig, .x.^viii, 1870; Loew, ' BlUtenbiol. Floristik,' p. 214 ; Urban, Jahrb. bot. Gart., Berlin, ii, 1883, pp. 36-404 ; K. F. Jordan, Ber. D. bot. Ges., Berlin, v, 1887, pp. 327-44 ; Kerner, 'Nat. Hist. PI.,' Eng. Ed. i, II, pp. 203, 225; Knuth, ' Bloemenbiol. Bij- dragen.')—The flower mechanism closely resembles that of Aesculus Hippocastanum. As Delpino first demonstrated, the pollen-covered stamens project in the first stage from the flowers (which exhale an odour of citron), while in the second stage the mature stigma protrudes. These parts serve as alighting- and resting-places for insect visitors. During the male stage the stamens lie upon the under-lip of the flower, curving upwards to its entrance, while the style is hidden in the middle. 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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