SELECTION OF PLANTS. 113 



September, with a light blue flower : it requires a dry soil 

 and an open situation : it is propagated by parting the 

 roots in the spring. Is a native of North America, and first 

 brought to England in 1759. 



It belongs to the 19th Class, under the head " Synge- 

 nesia Superflua." 



343. ASTER MUTABILIS, or Variable Starwort. 



This is also a hardy Perennial, which blows in October, 

 requires the same soil as the last, and is increased in the 

 same manner ; is also a native of North America, and was 

 first brought to England in 1731. 



It is of the same class as the last, and under the same 

 head. 



344. PSORALEA GLANDULOSA, or Stripe-Jlowered Psoralea. 



This is a greenhouse plant, which should be planted in 

 a good prepared loamy soil ; it is increased either from seed 

 or by cuttings. This plant begins blowing in May, and 

 often continues in bloom till August. 



It is a native^ of Peru, and first brought to England 

 in 1770. 



It belongs to the 17th Class, under the head " Diadel- 

 phia Decandria." 



345. ASTRAGALUS ALOPECUROIDES, or Foxtail Milk 

 Vetch. 



This is a hardy Perennial, which blows in July and 

 August, with a yellow blossom, is propagated by parting 

 the roots in the spring ; the soil should be dry, and the 

 situation open. 



