26 

 RHAMNUS.— Buckthorn. 



R. ALPINUS. — A variety with -n immense leaf, and quite orna- 

 mental. At Riga, Mr. Wagner says, hardy but sometimes slightly 

 injured. 



R. cATHARTicus. — Hardy at St. Petersburg. 



R. Pallasii. — A pretty shrub with very glossy foliage, six feet 

 in height. It seems hardy in the Botanic Garden at Moscow. 



\\\i' 



RHODODENDRON. 



The Rhododendeons extend from the Himalayas north, to the 

 Altai, and East to Kamschatka, and are found in some cold re- 

 gions. 7?. Duhuricum is an evergreen variety with purple blossom, 

 quite hardy at St. j?etersburg. It does well on limestone soil. R. 

 parvifolium, a smaller and more compact shrub with a small blos- 

 som ; grows well on peat or without it, and is very hardy far to the 

 north. 



RISES— Ourrant. 



R. Alpinum. — A fruit and an ornamental shrub. The fruit is 

 of fair size, a rich carmine, quite sweet, but with a very slight 

 bitter, yet nice and quite productive it would seem. It is from 

 Siberia. Mr. Shroeder, at the College Gardens at Petrovskoe, seem- 

 ed to value it highly In Siberia, not only the currants, but some 

 of the loniceras bear fruit, which is gathered for the table, and 

 yet these same varieties ripened in the climate of St. Petersburg 

 are not eatable. 



ROBINIA— Locust. 



The pseudo-acasia, or j'e//mv locust, next to the monilifera 

 poplar, is the mo;it common tree in northern and eastern France. 

 We find it planted along the railroad cuttings and embankments 

 to bind the eorth. We find it a common tre in the streets and 

 parks of Paris. We find it planted to cover waste tracts of land. 



