172 CAPPARIDACIM.. 



cies of the genus have barely reached the eastern coast of the peninsula of 

 Florida, or the adjacent " Keys," which have a proper West Indian and 

 tropical vegetation. The few species of extra-tropical North America be- 

 long to four or five genera of the Tribe Cleomere, DC, and are all Southern 

 and Western, with the exception of Polanisia graveolens, which extends 

 northward and eastward to the Great Lakes and Lake Champlain. Gynan- 

 dropsis pentaphylla has most probably been introduced by the negroes into 

 the Southern States ; so that the genus does not properly deserve a place 

 in this work. 



Conspectus of the Genera of the United States. 



C'leomella. (Plate 75.) Pod siliculaeform, rhomboidal, compressed 

 contrary to the placenta;, 4 - 6-seeded, stipitate on a very long gy- 

 nophore and a short torus. Petals nearly sessile, regular, entire. 

 Stamens 6. 



Cleome. (Plate 76.) Pod siliqureform, several -many-seeded, long- 

 stipitate or sessile. Stamens 6, rarely 4, distinct and free on a glob- 

 ular or hemispherical torus. Petals entire. 



(-'ristatella. (Plate 77.) Pod siliquaeform, many-seeded, stipitate on 

 a short gynophore. Torus minute, bearing a tubular gland as long 

 as the ovary, placed between it and the upper sepal. Petals unequal, 

 unguiculate, palmatifid. Stamens 6 - 14. 



Gynandropsis. (Plate 78.) Pod siliquaeform, many-seeded, stipitate on 

 a prolonged gynophore, to which the filaments of the 6 stamens are 

 adnate as far as the middle. Petals long-unguiculate, undivided. 



Polanisia. (Plate 79.) Pod siliquaeform, sessile or short-stipitate. Sta- 

 mens 8-32, unequal, free on a very short torus. Petals entire or 

 cmarginate, unguiculate. 



