158 ENTOMOPHILY [CH. 



By far the larger proportion of the true, gaily coloured 

 flowering plants, however, are pollinated by the agency 

 of insects, and here again we can recognise amidst the 

 endless diversity in details a number of features in 

 common shown by these entomojMlous plants. 



Typically the flowers are large and conspicuously 

 coloured, not numerous and crowded, and emit charac- 

 teristic odours, and secrete honey, all of which characters 

 combine to render them attractive to insects, the hairy 

 bodies of which become dusted with the pollen-grains 

 often viscid and provided with special outgrowths to 

 promote adherence and carry them from flower to 

 flower. 



It is a remarkable fact, however, that entomophilous 

 flowers, and particularly those especially adapted for the 

 visits of insects, are usually hermaphrodite or pseudo- 

 hermaphrodite, and not diclinous and on separate plants, 

 though many of them exhibit intermediate conditions 

 which suggest that the sexes are becoming separate. 



In the following the flowers are pollinated by insects 

 (entomophily) : 



Willows Vacciniiun 



Mistletoe Rhododendron 



Barberry Arbutus 



Maples Ling 



Gorse Bittersweet 



Broom Fig 



Laburnum Clematis 



Pyrus Mahonia 



Rosa Lime 



Hawthorn Whin 



Ribes Robinia 



Viburnum Prunus. 



In hermaphrodite (monoclinous) flowers there are 



Rubus 



Almond 



Cotoneaster 



Elder 



Lonicera 



Erica 



Azalea 



Bearberry 



Lilac 



Privet 



Daphne 



