140 



ANGIOSPERMAEDICOTYLEDONES 



Botanic Garden), a hover-fly (Eristalis nemorumZ.) and 2 bees i. Apis mellifica L. 

 5, skg. ; 2. Osmia rufa Z. 9, persistently skg. Plateau (Ghent Botanic Garden), the 

 honey-bee and Osmia sp. Ekstam (Nova Zemlia), flies. 



2004. M. intermedia Link. (Herm. Miiller, 'Fertilisation/ pp. 415-16, 

 ' Weit. Beob,,' III, p. 17 ; Kirchner, 'Flora v. Stuttgart,' p. 562 ; Knuth, 'Bloemen- 

 biol. Bijdragen.') In the small, homogamous, sky-blue flowers of this species the 

 stigma is at the same level as the anthers, so that an insect proboscis probing 

 for nectar is even less likely to touch both with the same side than in M. alpestris. 

 The connectives are produced into broad swollen appendages covering the anthers, 

 and preventing an inserted proboscis from taking up pollen to be transferred to the 

 stigma. These two peculiarities ensure crossing by insect-visits to a greater extent 

 than in the preceding species, but should these fail automatic self-pollination regularly 

 takes place. 



Fig. 278. Myosotis alpestris, F. W. Schmidt. A. Small-flowered dark-blue fortn. B. Do., partly 

 dissected from the side. C. Large-flowered paler form. D. A stamen before dehiscence. (/4-C > 7; 

 D X 35-) w, nectary ; ov, ovary. 



Visitors. Herm. Miiller gives the following list. 



A. Diptera. (a) Bombyliidae \ i. Bombylius major Z., skg. (^) Muscidae: 

 2. Aricia incana Wiedem., freq., skg.; 3. Limnophora sp., skg.; 4. Pollenia vespillo 

 F., skg. {c) Syrphidae : 5. Ascia podagrica F.^ skg. ; 6. Chrysogaster viduata Z., 

 do.; 7. Syritta pipiens Z., freq., skg. B. Hymenoptera. Apidae: all skg.: 

 8. Andrena albicans Milll. 5; 9. A. fasciata Wesm. J; 10. A. nana K.t; 11. A. 

 parvula.^^ 5, in large numbers; 12. Apis mellifica Z. 5, numerous: hanging verti- 

 cally or obliquely from the flower, it inserts the tip of its tongue with great accuracy 

 into the small opening of the corolla-tube; 13. Sphecodes gibbus Z. 5, skg. 

 C. Lepidoptera. Rhopalocera : 14. Coenonympha pamphilus Z., freq., skg.; 

 15. Pieris napi Z., skg.; 16, P. rapae Z., do. 



The following were recorded by the observers, and for the localities stated. 



Knuth, the honey-bee and two hover-flies, skg. (Eristalis arbustorum Z., and 

 Syritta pipiens Z.). MacLeod (Flanders), a Muscid and the honey-bee (Bot Jaarb. 

 Dodonaea, Ghent, v, 1893, p. 338, vi, 1894, p. 371). 



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