154 Ornamental Shrubs. 



pale yellow or rose, and appear after those of most of the 

 other species and varieties have passed by. It is a valu- 

 able member of the family, and fills an important place in 

 cultivation. Another good plant is D. lemoinei, which pro- 

 duces changeable flowers as to color, pale red turning to 

 deep rose, and again to a rich wine-color. It is esteemed 

 a choice plant, but is not largely cultivated. 



Professor Sargent, who during one of his visits to Japan 

 made a study of the wild types, says that in the central 

 and northern sections diervilla, weigela, is a common 

 shrub on the borders of mountain woods and by the banks 

 of mountain streams, and he became of the opinion that 

 what had been referred to by other botanists as several 

 distinct species, are in reality one and the same with varia- 

 tions such as might be expected from differences in soils 

 and exposures. From seeds which he gathered, speci- 

 mens have been grown in the Arnold Arboretum, and 

 these are known as Diervilla japonica. He illustrated 

 them in Garden and Forest with the following accom- 

 panying description : " It has ovate, acute, or acuminate 

 leaves which are nearly glabrous with the exception of a 

 few hairs on the lower surface of the midribs and veins, or 

 on some individuals these are clothed more or less thickly 

 with soft pubescence. The flowers are borne in few or 

 many-fiowered clusters which are long-stalked or nearly 

 sessile, the two forms appearing on the same plant ; and 

 they are rose-colored, pale yellow, pale red, or nearly 

 white on the same branch or on different branches of the 

 same plant, and flowers which are pale when they open 

 often become rose-color in fading." When this descrip- 



