1 7 o FLOWERS OF WASTE PLACES, ETC. 



alighting in the centre must first touch it and promote cross-pollination, 

 while those that alight on the petals may cause cross- or self-pollination. 

 The anthers close up in dull weather, and the stamens open inwardly 

 and cause thereby self-pollination. No honey is produced, so that 

 insects are pollen-seekers. 



The Greater Celandine is dispersed by its own agency. The pods 

 readily open, and are jointed, and distribute the seeds around the 



Photo. Flutters & Gannett 



GREATER CELANDINE (Chelidonlum niajus, L.) 



parent plant. It is also dispersed by ants, the elaiosomes containing 

 nutritive matter. 



This is a sand-loving plant, requiring a sand soil, and also in part 

 a humus-loving plant, needing a slight amount of humus soil. 



No fungal pests are known. The visitors are Lepidoptera, Large 

 Ranunculus (Poliaflavocinctd], Small Angle Shades (Euplexia hicipara], 

 Tortrix semialbana', Homoptera Aleurodes proletella and Siphonophora 

 chelidonii; Hymenoptera (Apidae), Bombits pratorum, B. agrorum, 

 B. rajellus, Halictus cy lindriciis , H. zonulus, H. sexnotatus; Diptera 

 (Syrphidse), Syrphus balteatus, S. ribesii, Syritta pipiens, Ascia poda- 

 grica, Rhingia rostrata; Empidse, Empis livida. 



Dioscorides gave the name Chelidonium, which is derived from the 



