SELECTION OF PLANTS. 133 



There are several more of this genus, but the 

 " Albiflora pleno, or double white/' is very desirable. 



404. PHYTEUMA SPICATA, or Spiked Rampion. 



This is also a hardy Perennial, which blows in July and 

 August, with a blue and straw-coloured blossom ; it affects 

 a dry soil, but rather a shady aspect, and is increased by 

 parting the roots in the spring. 



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

 in 1683. 



It belongs to the 5th Class, under the head " Pentan- 

 dria Monogynia.'' 



405. PLUMBAGO EUROP^KA, or European Lead-wort. 



This is a hardy Perennial, which blows in October with 

 a white blossom, it affects a deep strong soil, and an open 

 situation ; is increased by parting the roots in the spring. 



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

 to England in 1597. 



It belongs to the 5th Class, under the head " Pentandria 

 Monogynia." 



406. POLEMONIUM CCERULEUM, or Greek Valerian. 

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



a blue blossom, and almost any soil will suit it, is propa- 

 gated by parting the roots in the spring ; is a native of Bri- 

 tain, and belongs to the 5th Class, under the head * Pen- 

 tandria Monogynia.'' 



407. POLYGONUM DIVARICATUM, or Divaricated 



Persicaria. 

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



