150 BRECK'S BOOK OF FLOWERS. 



resembling each other, and considered hy some, as most proba- 

 bly, only varieties. They are among the most elegant orna- 

 ments of the flower-garden, in dry springs ; but they require 

 some care in keeping, unless in a soil almost entirely of sand. 



PYRETHRUM. 



Feverfew. 



Pyrethrum parthenium plena, or Double Feverfew, is 

 an ornamental plant, with pure white flowers, from June to Sep- 

 tember ; two feet high. It is frequently kept in green-houses, 

 but stands out all winter with a little protection. It is raised 

 from cuttings, or by dividing the roots. When raised from 

 seed, most of the plants will be worthless, not much better 

 than weeds, as there is no beauty in the single flowers. 



RANUNCULUS. 

 Buttercup. 



There are a number of varieties of Buttercups, which are 

 found double, and are frequently introduced into the flower- 

 garden. 



Ranunculus repens flore plena is a double variety; the roots 

 are creeping, and therefore the plant is rather troublesome. 

 The flowers are pretty ; a glossy yellow ; in bloom a number 

 of months. 



JR. acris flore plena is a species and variety, with upright 

 stems ; two feet high, with bright-yellow double flowers, in 

 June and July. 



JR. aconitifolius flore plena. This beautiful plant has fine 

 double white flowers, in June ; one foot high ; for some reason 

 it is not much cultivated in this country. It goes by the name 

 of " Fair Maids of France." 



