. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. Fig. iRi. Galiinn MoUiigo, L. (after Herm. Miiller). (i) YoQng^ (lower, with erect stamens and styles. (2) Older flower with stamens curved out of it, and styles diverging;. (3) Middle of the flower, seen from above, more highly magnified, a, stigma; ^, fleshy disk of the ovarj'. In younger flowers the stamens are erect, with anthers pollen-covered all over, while the two capitate stigmas are still closely apposed, but already receptive. The stamens subseque
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. Fig. iRi. Galiinn MoUiigo, L. (after Herm. Miiller). (i) YoQng^ (lower, with erect stamens and styles. (2) Older flower with stamens curved out of it, and styles diverging;. (3) Middle of the flower, seen from above, more highly magnified, a, stigma; ^, fleshy disk of the ovarj'. In younger flowers the stamens are erect, with anthers pollen-covered all over, while the two capitate stigmas are still closely apposed, but already receptive. The stamens subsequently spread out, and finally bend quite out of the flower; the two styles also diverge. In this second stage, therefore, cross-pollination is likely to result from the visits of insects. Schulz states that autumn plants in particular are frequently homogamous, and as in these the anthers are at first situated above the stigmas, self-pollination may take place. I have never observed the incurving of the stamens leading to autogamy that is described by Kerner as occurring in this species, G. infestum, and G. tricorne. Visitors.—I observed the following Diptera, skg., in the island of Sylt (' Weit. Beob. u. Bl. u. Insekt. a. d. nordfr. Ins.,' p. 235).— I. Coenosia tigrina Z'.; 2. Dolichopus aeneus ZPif^'.; 3. Hylemyia sp.; 4. H. variata F.; 5. Sargus cuprarius L.; 6. Scatophaga stercoraria L.; 7. Spilogaster communis ; 8. S. duplaris Zett.; 9. S. duphcata Mg.; 10. Stomoxys stimulans Mg. 5 ; II. Thereva nobilitata F. ; and in Riigen the beetle Cantharis fulva Scop., po-dvg. Herm. Miiller gives the following list.— A. Coleoptera. Oedemeridae: i. Oedemera podagrariae Z., po-dvg. (Thurin- gia). B. Diptera. [a) Bombyliidae: 2. Anthrax flava Mg., not infrequent, nect- 1kg. (Thuringia) ; 3. Systoechus sulphureus Mik., skg., probably piercing the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - colorat
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