. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. RANUNCULACEAE Kiel, freq.; H. M., Thuringia); 4. B. hortorum L. 5 (Kn.), as the last. H. M. also observed in Thuringia : 5. Andrena gwynana K. S skg.; 6. Halictus cylindricus, F. 5, po-cltg., freq.; 7. H. morio i^. 5, po-cltg. {b) Formicidae {zA ntc\.ZT-X\i\t\ti); 8. Lasius aiienus Foerst. §; 9. Leptothorax interruptus Schenck 5; 10. Myrmica levinodis Nyl. 5; II. M. ruginodis Nyl. 5; 12. M. scabrinodis Nyl. J; 13. Tapinoma erraticum Latr. 5. B. Coleoptera. {
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. RANUNCULACEAE Kiel, freq.; H. M., Thuringia); 4. B. hortorum L. 5 (Kn.), as the last. H. M. also observed in Thuringia : 5. Andrena gwynana K. S skg.; 6. Halictus cylindricus, F. 5, po-cltg., freq.; 7. H. morio i^. 5, po-cltg. {b) Formicidae {zA ntc\.ZT-X\i\t\ti); 8. Lasius aiienus Foerst. §; 9. Leptothorax interruptus Schenck 5; 10. Myrmica levinodis Nyl. 5; II. M. ruginodis Nyl. 5; 12. M. scabrinodis Nyl. J; 13. Tapinoma erraticum Latr. 5. B. Coleoptera. {a) Nilidulidae-. 14. Meligethes, nect-lkg. {b) Meloidae: 15. Larvae of Meloe. C. Hemiptera. 16. Aphanus vulgaris .Sf A///. D. Thysano- ptera. 17. Thrips, very freq. Schenk observed in Nassau, Osmia rufa L. 5. 16. P. pratensis Miller. (Sprengel, ' Entd. Geh.,' p. 289; Francke, ' Einige Beitr. zur Kennt. d. Bestaubungseinricht. d. Pfl.'; Loevv, ' Bliitenbiol. Floristik,' p. 390 ; Schulz, ' Beitrage,' I, p. 3 ; Knuth, ' Bloemenbiol. Bijdragen.')—The dark- violet sepals of the large pendulous flowers are arranged in the form of a bell, so that they constitute a roof by which the stamens and carpels are protected from rain. The flower mechanism agrees with that of the preceding species. Protogyny excludes autogamy. Warnstorf( Verb, bot. Ver., Berlin, xxxviii, 1896) describes the flowers found in the neighbourhood of Ruppin as first protogynous and subsequently ho- mogamous. Pollen of a shining white; the grains are about 37 /i in diameter. Visitors. — Loew (L.) and my- self (Kn.) have so far only observed bees as pollinators. On alighting, these first touch the stigmas—which project beyond the stamens—and then holding on to the crowded stamens, collect pollen or suck nectar.—Hymenoptera. Apidae: I. Apis mellifica L. 5, and 2. Bom- bus hortorum Z. $ (Kn., Kiel), skg. j,.,,, ^^ />«&<.«/« z<,r«a/M, (after He™. MUller). and po-cltg. J 3. Osmia bicol
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