152 



NICOTIANEiE. 



[I'AKT I. 



rest ; but the most remarkable part of this plant 

 is the capsule. When the corolla falls, the 

 capsule shrouded in the calyx presents the ap- 

 pearance shown at a in Ji'^. 71 ; and as the 

 seeds ripen, the upper 



part (as shown at b) 



becomes detached, 



and opens like a little 



cap. The leaves are 



sinuated and semi- 



decurrent. There are 



several species of 



Henbane, one of 



which (H. aurea) has 



the limb of the corolla 



deeply cut on only fig. 71— henbank. 



one side. 



The genus Datura is nearly allied to Brug- 

 mansia^ but it may be easily distinguished by 

 its calyx, which divides when the ovary begins 

 to swell, and the upper part drops off, leaving 

 only the lower part to enfold the capsule. The 

 corolla of all the species of Datura is funnel- 

 shaped, and the limb, in the large-flowered kinds, 

 often shows marks of the plaits in which it lay 

 when it was folded in the bud. There are five 

 distinct stamens, which are generally enclosed 

 in the mouth of the corolla. The capsule is 

 fleshy when young, and in most of the species it 



