MORPHOLOGY OF ANGIOSPERMS 



Far more general is the tendency to epigyny, in which the 

 checking of apical growth and the continued growth of the rest 

 of the growing point results in an ovule-bearing cavity grad- 



B 



D 



Fio. 1. "Diagram to illustrate the morphology of typical flowers. A, hypogynous; 

 -ff, perigynous ; <?, epigynous ; Z>, epigynous with prolonged ' calyx tube.' Recep- 

 tacle is dotted ; carpels are cross-lined ; ' perianth tube,' or ' calyx tube,' vertically 

 lined ; sepals, petals, and stamens are unshaded, but may be distinguished by their 

 relative positions." After GANONG.* 



ually roofed over by the carpels. From the top of the ovary 



thus developed the four sets of floral members develop as usual, 



those of each set remaining independent, or a cycle developing 



* GANONG, W. F. The Teaching Botanist. New York. 1899. 



