312 



ANGIOSPERMAE—DICOTYLEDONES 



/ 



' Bidrag till Kanned. om Skandin. Fjellvaxt. Blomn. o. Befrukt.' ; Loew, 'Blutenbiol. 

 Floristik,' p. 400.) — A proboscis 6 mm. in length is suflScient to reach the nectar 

 of this species, but bees of the kind appear to be wanting in the Alps. The agents 

 of pollination are humble-bees and other long-tongued bees, as well as numerous 

 Lepidoptera. 



Visitors. — Herm. Mulier observed Bombus alticola Kriechb. 5, skg. and po-cltg., 

 and also 6 Lepidoptera. Loew saw Bombus mastrucatus Gerst. 5, skg., and Osmia 

 morawitzi Gersl. S, do., in the Alps (Albula). Lindman noticed humble-bees and 

 Lepidoptera on the Dovrefjeld. 



KlG. too. Aslragaltis depressus, L. (after Herm. Mulier). A. Older flower that lias already bcprt 

 visiteil (X4;). B. Flower after removal of the calyx, vexillum, and right ala. C. The richt ala, seen from 

 the inner side. D. Flower after removal of calyx and vexillum, seen from above. E. Carina after removal 

 of its right side. .F. Anterior portion of the carina, depressed. (B-Fxj.) a, anthers ;/■ and j', staminal 

 tube ; e, alar fold (seen from inside) ; «', do. (seen from outside) ; /, alar lappet ; JIJ1\ alae ; n, nectaries ; 

 p, upper filament : 01-, ovary ; j .y' jc^, parts of carina ; .y/, stigma. 



Schneider observed the following humble-bees in Arctic Norway (Mus. Aarsh. 

 Tromfa, xvii, 1895) :— i. Bombus alpinus Z. 5 and 5 ; 2. B. hyperboraeus Schovh. 5 ; 

 3. B. hypnorum L. 5 and ^ ; 4. B. lapponicus Z. 5 and $( ; 5. B. scrimshiranus A'. 9 

 and g ; 6. B. terrester Z. j and 5. 



Ekstam saw small humble-bees visiting the fragrant flowers in Nova Zemlia. 



736. A. oroboides Homem. — Axell describes (op. cit., p. 17) the flowers of 

 this species as homogamous, and says that their mechanism agrees with that 

 of A. alpinus. They are pale blue, passing into violet at the bases of the vexillum. 

 and carina, and markedly asymmetrical. 



