356 FORCING GARDEN. 



charged with a, highly fragrant oil. The citron is ge- 

 nerally used in confections. It is supposed to be a na- 

 tive of Media^ and will scarcely ripen without protec- 

 tion in, Britain. Three subvarieties of citrt>n are de- 

 scribed by Risso. 



Q, Limetta, the Siveet Lime. — This is rather a tall 

 tree, with diverging branches. The flower is of a fine 

 white color, composed of five oblong petals. The fruit 

 is globose, with a black nipple-like protuberance at the 

 apex; it has a firm rind, and sweet pulp, and the color 

 is pale yellow. The lime i& a native of Asia, but culti- 

 vated in Italy. Seven varieties have been described. 



C. Limonumy the Lemon. — -The petioles of theleaves 

 somewhat winged ; fruit oblong, with a thin rind adher- 

 ing closely to-, the very acid pulp. This, like the pre- 

 ceding, is a native of Asia, but is cultivated in the south 

 of Europe. There are numerous varieties. 



Q. Aurantium^ Stveet Orange. — The petioles almost 

 naked ; fruit globose, with a thin rind aiid sweet pulp. 

 Risso has enumerated nineteen varieties ; of which the 

 principal are, the China, the Portugal, and the Maltese. 

 The last has a blood-colored pulp, with rich juice, and is 

 no\V^ much in request. The Tangerine, orange may be 

 cultivated successfully in a coipmon flower-pot, produc- 

 ing fruit of delicious quality for the dessert. 



'O, Bigarda, Seville ov Bitter Orange^ the most hardy 

 of the trib'e. The petioles winged ; fruit globose, with 

 a thin rind, and bitter juice.- This sort is employed for 

 making marmalade, and is also used in medicine. 

 Twelve varieties have been described. 



0. Decumana, the Shaddoelc. — The petioles broad, 

 with cordate wings ; fruit large, round, weighing from 

 ten to fourteen ppunds, with a. thick rind. This fruit 



