. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. RANUNCULACEAE 29 The flowers observed by Lindman on the Dovrefjeld were at first protogynous, afterwards becoming homogamous. Their diameter was 5-22 mm. In that region flies, and a Lepidopterid, were observed as visitors. Warnstorf (Verh. bot. Ver., Berhn, xxxviii, 1896) observed in individual flowers at Ruppin — though only very rarely — that certain stamens bore a papillated stigma at the tip. Pollen-grains yellow, tuberculated, very irregular, usually ro
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. RANUNCULACEAE 29 The flowers observed by Lindman on the Dovrefjeld were at first protogynous, afterwards becoming homogamous. Their diameter was 5-22 mm. In that region flies, and a Lepidopterid, were observed as visitors. Warnstorf (Verh. bot. Ver., Berhn, xxxviii, 1896) observed in individual flowers at Ruppin — though only very rarely — that certain stamens bore a papillated stigma at the tip. Pollen-grains yellow, tuberculated, very irregular, usually rounded tetrahedral, varying in size up to 43 /a in diameter. According to Focke (Abh. nat. Ver., Bremen, xii, 1891), Ranunculus auricomus is self-fertile. Visitors.—In north and central Germany the following have been observed by Herm. Miiller () and myself (Kn.).—A. Coleoptera. i. Meligethes, po-dvg. (Kn.). B. Diptera. (a) Muscidae: 2. Anthomyia radicum Z. j and S, particularly freq. (H. M.); 3. Lucilia caesar L., po-dvg. (Kn., Kiel.) ; 4. Scatophaga merdaria F., skg. and po-dvg. (H. M.). (b) Syrphidae : 5. Cheilosia vernalis Fall., po-dvg. (); 6. EristalistenaxZ., po-dvg. (Kn.,Kiel); 7. MelanostomamellinaZ.,po-dvg.(Kn.,); 8. Pipizella virens F., po-dvg. (). C. Hymenoptera. (a) Apidae: 9. Andrena fulvescens Sm. S, skg. (H. M.); 10. A. parvula .AT. 5, po-dvg. (Kn., H. M.); 11. Apis meUifica Z. 5 , po-clg. (Kn., Kiel); 12. Halictus albipes F. j, po-clg. (H. M.); 13. H. cylindricus F. 5, ditto (Kn.). (d) Formicidae: 14. An ant, nect-lkg. (Sprengel, H. M.). D. Lepidoptera. Tineidae: 15. Micropteryx calthella Z., skg. (). E. Thysanoptera. 16. Thrips (Sprengel, H. M.). Warnstorf observed numerous pollen-devouring beetles on the flowers at Ruppin. In Dumfriesshire (Scott-Elliot, 'Flora of Dumfriesshire,' p. 4) 2 Muscidae, and a beetle have been observed as Fig. 9. Ranunculus auricomus, L. (after Herm. Miitler). 1-8. Petals with nectaries of vario
Size: 2169px × 1152px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublisheroxfor, bookyear1906
