CHAP. I.] 



CRUCIFERiE. 



269 



is furnished with a long tapering point, called 

 the claw (b), and a broad flat part called the 

 limb (c). The claws of the petals are buried in 



Fig. 116. — Flowers of the Wallflower. 



a calyx of four sepals, placed alternately to the 

 petals, and somewhat swelled out at the base, 

 (see d). The stigma (e) is two-lobed, and forma 

 a kind of notched head. There are six stamens, 

 which appear at first to be all nearly of the same 

 height, but on examination it will be found that 

 two are somewhat shorter than the others. The 

 seed-vessel is of course the lower part of the 

 pistil; which, after the petals drop, becomes 



