640 



ANGIOSPERMAE— DICOTYLEDON ES 



1517. E. sphaerocephalus L. (Hildebrand, ' U. d. Gfeschlechtsverhalt. b. d. 

 Compositen,' pp. 46-8, Taf. VI, Figs. 1-3 ; Herm. Miiller, ' Fertilisation,' pp. 336-7, 

 'Weit. Beob.,' Ill, p. 79; Knuth, 'Bloemenbiol. Bijdragen,' ' Bliitenbiol. Herbstbeob.') — 

 Hermann Muller says that the nectar rises into the bell after filling the corolla-tube 

 (5-6 mm. long), which is almost completely occupied by the style. The bell is_ split 

 almost to its base into five linear lobes, and the nectar is therefore accessible even 

 to insects with a very short proboscis. After the style protrudes from the anther- 

 cylinder, its branches still remain apposed for a time, so that the pollen may be 

 removed by insect visitors before the stigmatic surfaces are spread out. 



Fig. 204. Echinops sphaerocephalus^ L. (after Herm. MulIer). (i) Floret at the end of the first 

 male) stage. (2) Do. in the second (female) stage. (3) Longitudinal section of the style and ot 



the corolla-tube which surrounds it. a, filaments ; d, anthers ; c, brush of sweeping-hairs ; d^ stigma ; 

 £, nectary. 



Visitors. — I observed (Kiel Botanic Garden), Apis, skg., 2 humble-bees (Bombus 

 lapidarius L. 5 and $, skg., and B. terrester L. 5, do.), 2 butterflies (Pieris sp., and 

 Vanessa io Z.), 2 hover-flies (Eristalis sp., and Syritta pipiens Z.), and 2 Muscids 

 (Lucilia cornicina F., and Pollenia rudis F^. Loew saw Bombus terrester Z. 5, skg., 

 in the Berlin Botanic Garden. 



Henn. Muller (H. M.) and Buddeberg (Budd.) record the following for Thuringia 

 and Nassau. — 



Hymenoptera. (a) Apidae: i. Bombus lapidarius Z. 5, skg. (H. M.); 

 2. B. muscorum F. 5, do. (H. M.) ; 3. B. sylvarum Z. 5, do. (H. M.); 4. B. 

 variabilis Schmiedekn. 5, do. (Budd.) ; 5. Halictus cylindricus F. 5 and S, very 

 numerous, skg. (Budd.); 6. H. interruptus Pz. S, skg. (Budd.); 7. H. maculatus 

 Sm. $, do. (Budd.); 8. H. minutissimus K. 5, do. (IBudd.); 9. H. morio F. 5, 

 do. (Budd.); 10. H. quadricinctus F. } and J, do. (H. M.) ; 11. H. rubicundus Chr. 

 S, do. (H. M.) ; 1 2. Prosopis communis Nyl. 5, do. (Budd.). (b) Vespidae : 13. Polistes 

 gallica L. (H. M.) ; 14. P. diadema Ltr., freq., skg. (H. M.). 



