THE NEMESIA AND HARVEY A FAMILY, 193 



Several species are cultivated in gardens, as the Snap- 

 dragon {Antirrhi'num), a native of South Europe, and 

 the Foxglove (Digita'lis), wild in England. On the 

 other hand, species of South African Neme'da are 

 grown in England. 



The corolla is always irregular, very often ringcnt, 

 or gaping widely, as of Harvey a; as well as personate, 

 with a closed mouth, as of the Snapdragon and 

 Lina'ria. It is sometimes rotate, i.e. flat and " wheel- 

 like," as of Veron'ica, xfF^ 



The number of sta- >^1^^^^^$AJ 



mens is usually four, of ,^^'^^^^^^P ^^^ 



which one pair has longer ^^'^'^.^ci^'^^'^^S^^^^^^j 

 filaments than the other ^^^^^ (^ 



pair. The fifth stamen is Ff^. 78— Lma'na (Toad-flax). 



almost always suppressed, but would lie between the 

 posterior pair. 



The stamens are said to be didynamous (i.e. " two 

 in power"), because two are longer than the other 

 two. 



The pistil is, in this order, always composed of two 

 carpels, one behind the other, the ovary having a lar^^e 

 central, or axile, placenta bearing many ovules. 



Fig. 78 represents a flower of the Toad-flax 

 (Lina'ria), showing the *'lip" pressed against the 

 posterior petals, thus closing the '' mouth, " and makinf^ 

 the flower to he personate, i.e. '* mask-like." 



The longer stamens will be seen to arise from the 







