224 NORTH AMERICAN FLORA [Volume 25 



1.7-4 cm. long, 1-2 cm. broad, cuneate or somewhat rounded and more orless inequilateral 

 at the base, acutish or rounded and sometimes emarginate at the apex, crenulate or dentate ; 

 flowers solitary or in pairs, axillary, usually appearing before the leaves ; sepals oblong- 

 ovate to oval, acute ; petals obovate or spatulate, striate ; filaments flattened, connate at 

 the base; ovary and disk hairy; berry light-orange, globose or subglobose, 3.5-4.5 cm. in 

 diameter, rough, clothed with short hairs. 



Type locality : Japan. 



Distribution : Widely cultivated in the United States and said to have escaped. 

 Illustrations: Hume, Citrus Fruits /. 6, 7, pi. 13; Cycl. Am. Hort. /. 477^t79 ; Bot. Mag. 

 pi. 6513 ; E. & P. Nat. Pfl. 3* : /. 114. 



Imperfectly known species 

 Citrus javanica Blume, Bijdr. 140. 1825. Spontaneous in Porto Rico, according to 

 Urban. 



