CALTCIFLOR^;. 



251 



Csesalpinia, L. 

 Cassia, L. 



Parkia, L. 

 Adenanthera, L. 



2. 



Tamarindus, L. 

 Copaifera, L. 



3. MlMOSEJE. 



Mimosa, L. 

 Acacia, Willd. 



Ceratonia, L. 

 Sclerolobiuin. 



Inga, Wittd. 

 Prosopis, L. 



Affinities, &c. This immense Order presents very considerable variety 

 of structure within its wide limits j and but one character is absolutely 







constant, the position of the sepals * * The irregularity of the corolla 



disappears altogether in the Mimosece, and the legume is exchanged for a 

 drupe in Detarium and Dipteryx : this causes a near approach to the 

 Rosacese ; but it may be noticed that when the flower is regular the fruit 

 is leguminous, and vice versa ; and the anterior position of the odd sepal 

 of the calyx is an unexceptional character of this Order. The Casalpimea 

 have the papilionaceous exchanged for a spreading irregular form, or the 

 petals are suppressed. In Mimosece the stamens are hypogynous. The 

 last fact brings the Order closely into relation with the Anacardiacea3, 

 from which it is not easy to distinguish some of the apetalous Ccesalpiniea 

 at first sight. 



The single carpel in the ovary of this Order is almost a universal cha- 

 racter j two carpels, however, appear to be normally present in Diphaca 



Fig. 369. 



Fig. 370. 



Fig. 369. Legume of Pisum. 

 Pig. 271. Legumes of Medicago. 



Fig. 370. Lomentum of A coda. 



Fig. 372. Legume of Astragalus : a, entire ; 6, cut across, 

 to show the false partition. 



and C&salpinia diyyna ; a double ovary sometimes occurs as a monstrosity 

 in Wistaria sinensis, in Gleditschia, and in the French bean (Phaseolm) j 

 and a Mimosa with 5 carpels (thus a symmetrical flower) is said to have 



