184 ROSACES. 



Amygdalea. 



Rosacete with the tube of the calyx lined with a waxy 

 disk. Carpel superior, solitary. Fruit, a drupe. (Lind.) 



Geographical Relations. Exclusively found in the 

 northern hemisphere ; none having been discovered in 

 South America, nor in any country south of the Line ; 

 only five or six approach the equator. 



Properties. The existence of Hydrocyanic acid in 

 their leaves and seeds is most worthy to be noticed. 

 They are otherwise astringent. 



Officinal Plants. 



Amygdalus communis, var. /3, y. 

 Prunus domestica. 



Dryadece. 



Rosaceee with the calyx 4-5-cleft, but often bearing 

 bracteolse on its tube equal in number to the segments, 

 and alternate with them ; petals 5 ; the seed solitary, 

 erect, or inverted. 



Herbaceous, very seldom shrubby, with the leaves usu- 

 ally compound, stipulse adhering to the petiole. (Lind.) 



Geographical Relations. Though found in the tro- 

 pical regions of America, and in the southern hemis- 

 phere, this sub- tribe is more immediately one of the 

 colder climates of the northern hemisphere. 



Properties. Innocuous, and for the most part as- 

 tringent. 



Officinal Plant. 

 Tormentilla officinalis. 



