153 



** Cotyledons jlat^ incumbent. 



334.. SISYMBRIUM. Pod nearly cylindrical. Stigma 

 capitate, notched. 



339. HESPERIS. Pod inaccurately quadrangular. Stig- 

 ma nearly sessile, of 2 converging lobes. Cal. closed ; 

 with 2 protuberances at the base. Seeds not bor- 

 dered. 



336. ERYSIMUM. Pod quadrangular. Stigma capi- 

 tate, notched. 



**# Cotyledons folded, incumbent. 



342. BRASSICA. Pod nearly cylindrical, beaked, with 

 2 valves. Seeds nearly globular, Cal. closed. 



34-3. SINAPIS. Pof? nearly cylindrical, somewhat beak- 

 ed, with 2 valves. Seeds nearly globular. Cal. 

 spreading. 



344-. RAPHANUS. Pod tumid, imperfectly jointed, 

 without valves. Seeds globular. 



This whole class, except the exotic genus Cleome, which 

 has been forced into it, constitutes an entirely natural 

 order, the Cruciferce of recent authors ; which is indeed 

 so natural and distinct, that we can hardly trace the least 

 affinity between it and any other tribe. The artificial sy- 

 stem leaves it undisturbed ; not requiring the separation 

 of any genus from the rest, nor properly introducing any 

 that does not belong to them ; for whatever may become 

 of Cleome, it ought not to encumber this class, to which 

 it has no natural affinity, nor has it even the artificial 

 character, except in a very few species. 



Cruciferce. Juss. 63. DeCand. Syst. v. 2. 139. Siliquosce. 

 Linn. 39. 



Flo'wers all complete and perfect, having a calyx and corolla, 

 with stamens and pistil, in every individual. 



Calyx inferior, of 4 ovate-oblong, concave, obtuse, usually 

 converging leaves, opposite in pairs ; prominent at the 

 base ; very sleek within ; deciduous. 



Corolla what is termed cruciform, Introd.f 156, 157, con- 

 sisting of 4 petals, alternate with the calyx, almost inva- 

 riably regular and equal; their clangs erect, tapering 



