XXVI. ROSACEJE I PY RUS. 



441 



791. P. americana. 



Spec. Char. y $c. Leaflets acute, almost equally serrated, glabrous, as is the 

 petiole. Pomes globose, of a purplish tawny colour. (Dec. Prod.} A 

 tree, closely resembling the common mountain ash. Canada and New- 

 foundland, in woods. Height 15ft. to 20ft. Introduced in 1782. Flowers 

 white ; May. Fruit bright scarlet ; ripe in September. Decaying leaves 

 yellowish green. Naked young wood dark purplish. 



It is, apparently, a more robust-growing tree than the European mountain 

 ash, with larger leaves, shining above, and smooth beneath ; but, in reality, it is 

 more tender. Though it has been many years in the country, we do not 

 know of a large, old, handsome specimen of it any where. It is propagated 

 by grafting on the common mountain ash. On account of the brilliant colour 

 of the fruit, and the large size of the bunches in which it is produced, this 

 species well deserves a place in collections. 



*t 31. P. MICROCA'RPA Dec. The small-fruited Service. 



Identification. Dec. Prod., 2 p. 636. ; Don's Mill., 2. p. 648. 



Synonymes. Sorbus aucuparia at, Michx. Fl. Bor. Amer. 2. p. 291. ; S. micrantha Dum.Co 

 'p. 464. ; S. microcarpa Ph. Fl. Amer. Sept. 1. p. 341. 



urs. ed. 2. 



p. 464 . 

 Engravings. 



rpa 

 Our^g.2090. in p. 



1107. 



Spec. Char., $c. Leaflets glabrous, acuminate, unequally incisely serrated ; 

 the teeth tipped with a bristle-like mucro. Petiole glabrous. Pome glo- 

 bose, scarlet. (Dec. Prod.) A large shrub or low tree. North America, 

 Carolina to New York. Height 10 ft. to 12 ft. Introduced ?. Flowers 

 white ; May and June. Fruit scarlet, small ; ripe ?. 



According to Pursh, this species is very distinct from P. americana ; from 



