158 ARISTOCRATS OF THE GARDEN 



branches, small gray-green leaves and flowers in 

 pairs or singly, and the allied R. multibracteata with 

 larger and greener leaves and clusters of numerous 

 rose-colored flowers. There are other species, too, 

 but this half dozen must suffice. 



A genus of ornamental shrubs which recent work 

 in China has vastly augmented is Cotoneaster. Two 

 dozen of these new species have deciduous leaves 

 and thrive amazingly in the Arnold Arboretum, but 

 about half a dozen have evergreen leaves, and are not 

 hardy there. One of these, C. pannosa, flourishes in 

 and around San Francisco and Mr. McLaren told 

 me that he considered it one of the most valuable 

 plants of recent introduction. Closely related to 

 that species is C. Harroviana which is a superior 

 plant with rather larger and thicker shining green 

 leaves, broader masses of flowers and wide-spreading 

 branches with red-purple stems. The Willow-leaved 

 Cotoneaster (C. salicifolia) is an erect shrub growing 

 ten to twelve feet tall with arching branches, pendent 

 whip-like branchlets, narrow shining green leaves 

 clothed with a felt of white hairs on the underside 

 and flat corymbs of flowers. Its variety rugosa 

 has rather shorter and broader leaves which are 

 undulate on the upper surface; the variety floccosa has 

 more narrow leaves and brighter red fruits than the 



