606 On the artificial Arrangement 



when the genus becomes determined, its name being found 

 on the same line with the corresponding description. In the 

 instance I have quoted, as in all genera of the order Crucife- 

 r<e, it is requisite firstly to determine to which of the sub-or- 

 ders it appertains. 



CRUCIFERJE. 



{BRASSICACEJE, Lindl.). 



This order comprehends the plants which fall under the 

 Linnsean divisions of Tetradynamia Siliquosa and Siliculosa. 



SUB-ORDERS. 



Fruit a Siliqua 9* 



Fruit a Silicula i$* 



» f Siliqua sub-articulated, valveless Raphanus. 



(Siliqua not articulated B. 



t» | Sepals gaping or patulous , C 



( Sepals erect or connivent H. 



p (Siliqua 4-angled Barbarea. 



( Siliqua nearly cylindrical D. 



j^ J Stigma quite entire E. 



(Stigma notched F. 



p ( Siliqua decimate, short, and turgid Nasturtium. 



X Siliqua erect, nearly cylindrical Sisymbrium. 



p (Flowers white or purplish Cardamine. 



' 1 Flowers yellow G. 



p (Seeds in one row Sinapis. 



(Seeds in two rows Diplotaxis. 



tt fCalyx with two sacs at the base I. 



(.Calyx equal at the base, or nearly so L. 



j CGlands between the short stamens and ovary. ..Hesperis. 



\ Glands on each side of the short stamens K. 



XT- fLobes of the stigma spreading, flowers ye\low..Cheirantkus 



\L6bes of the stigma connivent, flow. Tpurplish.. Matthiola. 

 T C Stigma notched M. 



(^Stigma quite entire O. 



--, CSiliqua lanceolate, purplish flowers Dentaria. 



' ^Siliqua 4-angled, flowers white or yellow N. 



^ CCalyx lax, flowers white Alliaria. 



' ^Calyx closed, flowers yellow Erysimum. 



^v CFlowers yellow, seeds globose Brassica. 



' ^Flowers white, seeds oval P. 



p f Seeds in one row in each cell Arabis. 



\ Seeds in two rows in each cell Turritis. 



