606 



KOTANY 



either all coherent into a tube surrounding the pistil or the posterior 

 stamen is free. Seeds with a curved embryo. 



Tlu- component parts of a papilionaceous flower arc seen separately in Fig. 638. 

 The posterior petal, which overlaps the others in the hud, is termed the standard 

 (vexillum). The two adjoining, lateral petals are the wings (al;e!. and the two 

 lowest petals, usually coherent liy their lower margins, together form the keel 



Ki<;. <<-l-. i.'iitixus Isoljurnum (J nat. .size). 



(carina). The upper ends of the stamens are usually free and curve upwards, as 

 does also the style bearing the stigma. 



iMi'oiiTAXT SUB-FAMILIES AND GENERA. The (1) Sophoreae and (2) Podalyrieae 

 approach the Caesalpinaceae in having the stamens more or less free. The former 

 is characterised by pinnate leaves, the latter by simple or palmate leaves. The 

 genus Myroxylon, belonging to the Sophoreae, is' of importance on account of the 

 balsam obtained from secies belonging to it. Myroxylon Pcreirac is a tree of 

 moderate height with alternate, imparipinnate leaves (Fig. 639). The flower- an 



