SEDUM SOLIDAGO SPIR^A. 153 



SEDUM. 



Stone Crop. 



Sedum, from sedere. These plants, growing upon the bare 

 rock, look as if sitting upon it. The species are low succu- 

 lent, some of them pretty, others curious ; but none of them 

 remarkable in any way. Some look pretty on rock-work, and 

 others are frequently used for edgings to walks. The species 

 are very numerous. . 



SOLIDAGO. 

 Golden Rod. 



This is an extensive family of native plants, some of them 

 showy, with dense spikes, or panicles of yellow flowers, in 

 August and September. A few of them look pretty in the 

 garden, and help to make up a variety. 



SPIRJEA. 



This genus affords numerous ornamental shrubs and herba- 

 ceous plants, some of them very desirable. Among the herba- 

 ceous are the following, which are all very hardy, and easily 

 propagated by dividing the roots. 



Spircea filipendula. Dropwort. A very elegant species, 

 with tuberous roots like the Peony. Flowers white ; the buds 

 shaded with pink ; in corymbs ; two feet high ; from June to 

 August. The foliage is beautiful. 



S. filipendula plena. Double Dropwort. A very desirable 

 plant, with clusters of fine double white flowers, from June to 

 October. It is more dwarfish than the last; not more than one 

 foot high. The time to divide the tubers of these two varieties 

 is in August ; they will then flower strong, the next year. 



