76 AMONG THE WILD FLOWERS. 
“upper petal of the flower is called the standard ; 
the two side ones, the wzngs; the two lowest, 
_ which form a boat-like cover for the stamens 
and pistils, usually concealing them, are called 
the eel, There are in the flower 10 stamens, 
which are sometimes all united by the filaments 
in a tube round the pod, and are therefore 
monadelphous: but in many of the genera, one 
stamen is separate from the other nine, and 
the flower is then diadelphous. 
Among the exotics of this order many other 
formations occur in the structure of the parts 
of flower and fruit, as well as in the form and 
habits of the plants, of which there are known 
not less than seven thousand; but whatever 
the aspect of the plant, or the structure of 
the flower, whether the corolla be like that 
of the pea, as in our plants, which are all of 
the sub-order fapzlionacee ; or with spreading 
but irregular petals, as in the second sub-order 
Cesalpinieez, which includes many medicinal 
plants, and is named from Ccesalpinia which 
yields the Brazil-wood of commerce, one of 
many similar instances in this division; or with 
regular flowers like those of the third sub-order, 
Mimosee, of which there are about one thousand, 
