292 



THE CROSSING OF FLOWERS. 



2 



Fig. 284.— Types of the 13th, 14th, 15th, 16th, 18th, and 20th classes of the Linnean System. 



1, 2 Tilia, whole flower and section of same, s Anemoiie nemorosa. *, ' Melaleuca, whole flower and section of same. 

 6 Antirrhinum, upper lip of corolla showing stamens. ? Cardamine pratensis. 8 The same flower, the petals removed. 

 » Tamarindvs. i» Adansonia. " ArisMochia Clematitis. ^'^ The same flower after removal of the perianth. 

 «, ', i", 11 natural size ; the others somewhat magnified. 



