Pyrus 1 5^9 



ft Leaves not covered beneath with dense grey tomentum. 



10. Pyrus coronaria, Linnaeus, Sp. PL 480 (1753). 



Young branchlets slightly tomentose. Leaves variable in shape, ovate or 

 triangular, about 3 in. long, acute at the apex ; margin irregular with large 

 serrated teeth ; lower surface green, pubescent on the nerves. Fruit i to 

 i^ in. in diameter, globose, depressed at the base, fragrant, covered with a 

 waxy exudation. 



A native of the eastern parts of Canada and the United States. Introduced 

 in 1824, and said by Loudon ^ to have become naturalised near White Knights 

 and Godalming, where it attained 30 ft. in height. 



11. Pyrus angustifolia, Solander, in Alton, Hort. Kew. ii. 176 (1789). 



Branchlets glabrous. Leaves oblong-lanceolate, i|- to 3 in. long, acute or 

 rounded and apiculate at the apex, tapering at the base ; margin with irregular 

 teeth and crenate serrations ; under surface glabrous except for slight pubescence 

 on the midrib. Fruit sub-globose, i in, in diameter, very fragrant. 



A native of the United States from Pennsylvania to Florida and Louisiana. 

 Introduced in 1750. 



** Calyx not persistent on the fruit. 



12. Pyrus rivularis^ Douglas, ex Hooker, Fl. Bor. Amer. i. 203 (1833). 



Branchlets slightly tomentose. Leaves ovate, about 3 in. long, acute or 

 acuminate, slightly tomentose beneath ; margin sharply serrate, with often two 

 to four small lateral lobes or large teeth. Fruit ellipsoid, ^ to f in. long. 



A tree, 40 ft. high, occurring in western North America from Alaska to 

 California. Introduced in 1836. 



13. Pyrus Toringo, Siebold, in Ann. Mus. Lugd. Bot. iii. 41 (1856). 



Malus Toringo, Siebold, Cat. Rats. 4 (1856); Carribre, in Rev. Hort. 1870-1871, p. 451, 

 coloured plate. 



Branchlets tomentose. Leaves on the short shoots, ovate, \\ X.o 2 in, long, 

 more or less tomentose beneath, sharply serrate ; on the long shoots, 2 to 2^ in, 

 long, trilobed, with a large ovate acuminate irregularly serrated terminal 

 lobe, and two smaller triangular lateral lobes. Fruit globose, about \ in. in 

 diameter. 



A native of Japan,' introduced by Siebold in 1856. 



14. Pyrus floribunda, Nicholson, in Kew Hand- List Trees, 181 (1894) (not 



Lindley), 



Malus floribunda, Siebold, Cat. Rais. 5 (1859), ex Van Houtte, More des Serres,xv. t. 1585 

 (1865); Carrifere, in Rev. Hort. 1870-1871, p. 591, coloured plate. 



Branchlets slightly pubescent. Leaves ovate to elliptic, 2 to 2f in. long, i 

 to i^ in. broad ; petiole and under surface pubescent, the pubescence dense on 



1 Arh. et Frut. Brit. ii. 908 (1838). 



2 Britton and Shafer, N. Amer. Trees, 435 (1908), adopt for this species the name Pyrus diversifolia, Bongard, in Mem. 

 Acad. Petersb. ii. 133 (1833). wliich is strictly applicable to a pubescent variety. 



3 Malus Sargenti, Rehder, in Sargent, Trees and Shrubs, i. 71 (1903). is a very tomentose variety of P. Toringo, which 

 was found by Sargent in a brackish marsh near Moronan in Japan. 



