THE CRUCIFORM FAMILY. 59 



[I. SUB-ORDER. (Pleurorhigae.) Cotyledons accumbent o=. 



1 TRIBE. (ARABIDEJE.) Pod Siliqua, valves flat, con- 

 cave or slightly keeled. Dissepiment narrow in the broadest 

 diameter. 



Observe that in every Sub- Order, the Tribes with 

 long Pods, are classed before the Tribes, with Pouches, 

 and that those Species which have Pods without valves, 

 (of which tnere are very few) are placed last in. the 

 Order. 



XVII. GENERA in the first Sub- Order. 

 SILIQUA. SILICULA. 



2, Stock. 2. Horse Eadish. 



1. Wall-flower. 2. Scurvy-grass. 



2. Winter-Cress. 1. Koniga 



1. Tower Mustard. 5. Whitlow-grass. 



5. Eock-Cress. 3. Penny-Cress. 



1. Coral-root. 1. Hutchinsia. 



4. Bitter- Cress. 1. Teesdalia. 



3. Water-Cress. 1. Candy-Tuft. 



1. Sea Eocket. 



[The WALL-FLOWER. Chiranthus Chiri. 

 Pod compressed or two-edged, calyx erect, two opposite 

 sepals bagging (saccate) at the lower part. Stigma placed on 

 a style, two-lobed, (pi. II. 5.) Hypogenous glands, none, be- 

 tween the longer stamens. Leaves, lance-shaped (pi. I. 3, 6,) 

 pointed,) with twice divided hairs, close to the leaf, (appressed,) 

 lobes of the stigma spreading, (patent) stem shrubby at the 



