ROSA 



167 



Fig. 249. — Japanese Rough-leaved Rose. Fig. 250. —Dog Rose. 



beautiful and the most popular of the single-flowering species, followed 

 by a key to a few single-flowered forms extensively cultivated. 



Japanese Rough-leaved Rose 

 (249) — Rosa rugosa — is a beautiful 

 upright shrub (6 feet) with stout stems 

 thickly covered with both prickles and 

 bristles. The leaves have 5 to 9 rough 

 thick shining dark green blades with 

 the lower sides lighter and more or 

 less pubescent. The flowers are usu- 

 ally single, purple or white, 2i to 3| 

 inches broad, blooming from May to 

 September. The fruit, which soon 

 forms, is large, 1 inch, brick-red 

 and remains on till winter. This is the 

 most ornamental of all roses for the 

 shrubbery and is especially fine in its 

 foliage. There are many named va- 

 rieties, hicluding a few with' somewhat 

 double flowers. From eastern Asia. 



[Twig cuttings ; seeds ; root cut- 

 tings ; layers.;] Fig. 251. — Sweetbrier. 



