THE FORMS OF FLORAL ORGANS. 



Ill 



lateral displacement of the anterior petal being not always 

 carried out, as it is in tlie next flower to be described. 



In Epilohium angustifolium (Fig. 34) and Godetia, which, 

 have no anterior petals, the bees cling to the dependent 

 stamens, while the petals have become permanently displaced, 

 the two lower being somewhat raised, so that the angular 

 distances are not the same. In Azalea and Rhododendron 

 there is no interior petal, but the posterior one is slightly 

 enlarged, and this alone possesses extra colouring and the 

 "path-finder." The stamens, being declinate, carry the 

 insect without the aid of the corolla, so that the antero-lateral 



Fig. oL— Ejyilobium angustifolium. Fig. 35. — Veronica Chamcedrys (after Miiller). 



pair of petals, not sharing in the supjDort of the insect, are 

 not enlarged at all. 



In Circcea and Vei'onica Chamcednjs (Fig. 35), the insect 

 clings to the two stamens and style ; and the anterior petals 

 are not enlarged, while in the latter flower it is, as usually 

 the case, the smallest, the stamens of Veronica being attached 

 to the lateral petals have to supply the fulcra for leverage, 

 and consequently these have now become relatively hyper- 

 trophied. 



In many flowers which have sub-declinate stamens, the 

 latter lie in a more or less boat-shaped anterior petal, show- 

 ing that the action of the insect has somewhat affected both 

 the whorls together, as they have each some share in carry- 



