164 



HONEY FLOWERS, ETC. 



[CH. 



Willows 



Rliamnus 



Bird Cherry 



Cherry 



Apple 



Hawthorn 



Ivy 



Erica 



Arctostaphylos 



Lilac 



Lime 



Blackthorn 



Gean 



Blackberry 



Rowan 



Dogwood 



Snowberry 



Ling 



Rhododendron 



Spindle Tree 



Rhus Typhina 



Plum 



RasjDberry 



Pear 



Cotoneaster 



Fly Honeysuckle 



Vacciniu'ni 



Loiseleuria 



Ligustrum. 



Good examples of flowers especially adapted to pro- 

 tect the pollen and honey from rain and dew are seen in 

 the bell-shaped corollas of 



Erica tetralix Vacciniiim uliginosum 

 V. Myrtillus 

 V. Oxy coccus 

 V. Vitis-idcea 



Menziesia. 



There are, however, much more elaborate mechanisms 

 to ensure cross-pollination, of which I will select a few 

 from among our ordinary trees and shrubs ; but it should 

 be noticed that by far the best and most interesting or 

 complex cases are afforded by plants other than those 

 with which this book is concerned, and the reader may be 

 referred especially to the Violet, Salvia, many Compositae, 

 Orchids, Asclepiads, Arum, Aristolochia, Primula, &c., for 

 particularly important examples, and to Darwin's works on 

 the Forms of Flowers and on the Fertilisation of Orchids 

 for further particulars of this fascinating subject. 



The Fig (Fig. 96) affords a curious and instructive 

 example. The following account refers more especially to 

 the Fig in its southern home, e.g. Naples. The small 

 flowers lining the interior of the hollow floral axis or 



E. ciliaris 

 E. vagans 

 E. cinerea 

 E. carnea 



Arbutus 

 Ling 



Bearberry 

 Andromeda 



