126 ANGIOSPERMAEDICOTYLEDONES 



of S. oftlcinale, but with longer prickles on the triangular scales, according to 

 a description given by Loew of plants cultivated in the Berlin Botanic Garden. 



1976. S. tuberosum L. 



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

 stated. 



Ducke (Trieste and Austrian Silesia) and Friese (Fiume and Hungary), as 

 a typical visitor the bee Andrena symphyti Per. 5 skg. and po-cltg., S skg. Loew 

 (Berlin Botanic Garden), 4 bees (Ber. D. boL Ges., Berlin, iv, 1886, p. 160) i. 

 Anthophora pilipes F., steadily skg.; 2. Apis mellifica Z. 5, po-cltg.; 3. Bombus 

 hortorum L. 5, skg. ; 4. B. lapidarius Z. 5, skg. (.?). 



1977. S. grandiflorum DC. 



Visitors. Loew (Berlin Botanic Garden) observed the same 4 bees as for 

 S. tuberosum (loc. cit.). 



1978. S. asperrimum Donn. 



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

 stated. 



Morawitz (Caucasus), 2 bees Bombus vorticosus Gerst., and Podalirius parie- 

 tinus F. Loew (Berlin Botanic Garden), the honey-bee, skg. through perforations 

 made by humble-bees, and the humble-bee Bombus terrester Z., vainly (?) skg. 



1979. S. caucasicum Bieb. 

 Visitors. Loew observed the bee Anthophora pilipes F. 5, skg., in the Berlin 



Botanic Garden. 



1980. S. peregrinum Ledeb. (=S. asperrimum Donn^ according to the /W< 

 Knuensis). 



Visitors. Loew observed 7 bees in the Berlin Botanic Garden. 



I. Anthidium manicatum Z. ^, skg. through holes made by humble-bees ; 2. 

 Anthophora pilipes F. $, skg. ; 3. Bombus agrorum F. 5, skg. and po-cltg. ; 4. B. 

 hortorum Z. } and g, skg., and then visiting S. officinale; 5. B. hypnorum Z. 5, 

 skg. legitimately ; 6. B. pratorum Z. > perforating the flowers ; 7. B. terrester Z. 5, 

 first trying to suck legitimately and then thrusting its proboscis into holes made by 

 humble-bees. 



610. Pulmonaria L. 



Heterostylous-dimorphous, usually homogamous humble-bee flowers ; with 

 nectar secreted by the four-lobed base of the ovary, stored in the lowest part of the 

 corolla, and protected from rain by a ring of hairs in the throat of the corolla. 



1981. P. officinalis L. (Sprengel, ' Entd. Geh.,' p. 91 ; Hildebrand, Bot. Ztg., 

 Leipzig, xxiii, 1865, pp. 13-15; Herm. MtiUer, ' FertiHsation,' pp. 412-14, ' Weit. 

 Beob.,' Ill, p. 16; Kirchner, 'Flora v. Stuttgart,' pp. 558-9; Schulz, 'Beitrage'; 

 Loew, ' Blutenbiol. Floristik,' p. 1392; Knuth, ' Bloemenbiol. Bijdragen.') The 

 flowers of this species are at first of a red colour, but subsequently become blue- 

 violet, while their openings widen a little, enabling insects to insert their heads for 

 a few mm. into the uppermost part of the corolla-tube, so that a proboscis of 8 mm. 

 is long enough to reach the nectar secreted at the base. In short-styled flowers 

 (Sprengel only noticed these) the stamens are situated in the opening of the corolla- 

 tube (10-12 mm. long) and the stigma about its middle. In long-styled flowers the 

 style is 10 mm. in length, so that the stigma is situated in the entrance of the coroU 



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