134 SELECTION OF PLANTS. 



a white blossom, it requires a strong soil and open situation, 

 is propagated by parting the roots in the spring. 



It is a native of Siberia, and first brought to England 

 in 1759. 



It belongs to the 8th Class, under the head " Octan- 

 dria Trigynia." 



(gfT There are 24 more of this genus, 15 Hardy An- 

 nuals, and 9 Hardy Perennials. 



408. POLYMNIA UVEDALIA, or Broad-leaved 

 Polymnia. 



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

 a yellow blossom, and it frequently rises to six or seven 

 feet high ; it requires a strong soil and open situation. Is 

 increased either from cuttings, or by parting the roots in 

 the spring. 



It is a native of North America, and was first brought to 

 England in 17 12. 



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

 nesia Necessaria." 



409. POTENTILLA RECTA, or Upright C'mquefoil. 



This is a hardy Perennial, which blows in June with a 

 yellow blossom, it requires a dry soil and an open situation, 

 is propagated by parting the roots in the spring. 



It is a native of the South of Europe, and was first 

 brought to England in 1648. 



It belongs to the 12th Class, under the head " Icosan- 

 dria Polygynia." 



There are 27 more of this genus, equally hardy. 



