Citrus EUTACE^ 187 



Lime. 



Ciiltivated and spontaneous ; probably native of India. 



Shrub or tree to 15 or 20 ft. bigh ; branches armed with spines in the 

 leaf-axils. Floivers axillary, solitary, or 2-10 in clusters or short racemes. 

 Calyx with 4-5 acute teeth, about 4 mm. 1. Petals 4-5, oblong-lanceolate, 

 white or pale pink, 1-1*5 cm. 1. Stamens about 25, united in a number of 

 groups. Ovary 9-10-celled. Fruit, juice-cells small, slender, pointed. 

 Seeds small, ellipsoidal, pointed. 



This species forms a good fence when well pruned. The fruit is picked 

 and used green before it is ripe. The juice is considered to be purer and 

 superior to that of the lemon, and is looked upon as an indispensable 

 addition to many dishes, and is also used in the laundry ; it is the chief 

 source of citric acid, so important in the dyeing industry, and is of con- 

 siderable value from a medicinal point of view. The young fruits, or the 

 rind only of older fruits, are preserved in sugar and are eaten as a sweet- 

 meat to aid digestion. 



Bonavia (Oranges &c. 80-89) considers that the "lima" of Ceylon, with 

 large petiolar wings and warty thick-skinned fruit, is the wUd form of the 

 lime. This "lima" is the Livio ventricosus (Lemon Purrut) of Rumf 

 (Amboin. ii. 102, t. 26, f. 1, probably f. 3 is only a smooth form of the same). 

 The following forms given by Rumf, viz. L. agrestis (Lemon Papeda) ii. 104, 

 t. 27, L. ferus (Lemon Swangi) ii. 106, t. 28, L. aurarius (Lemon Maas) 

 ii. 109, t. 30, seem to be only forms of L. ventricosus ; while in his Limon- 

 ellus or Limo tenuis (Lemon Nipis) ii. 107, t. 29, we have the form selected 

 for cultivation, the " lime," with small petiolar wings and smooth pleasantly 

 acid fruit. Even if this view be not accepted, Christmann certainly includes 

 the common lime in his name Limonia aurantifolia. 



4. C. Aurantium L. Sp. PI. 782 (1753) (in part) ; leaflet 

 oblong-elliptical, with a faint characteristic scent, 7-14 cm. 1., 

 apex acute or somewhat acuminate, sometimes obtuse, margin 

 entire or slightly crenulate-serrate ; petiole usually with a narrow 

 oblanceolate wing ; fruit globular or somewhat flattened at top 

 and bottom, 6-9 cm. in diam., usually with solid core, rind closely 

 fitting, usually thin, smooth or slightly rough, pulp abundant, 

 sweet and subacid, yellow or red (in blood-orange). — Bisso in 

 Ann. Mu8. Par. xx. 181 & Orang. t. 3-29 ; Tussac Fl. Ant. Hi. 

 t. 14; Griseh. loc. cit. (in part); Hook. f. loc. cii. (excl. vars.) ; 

 Bentl. & Trim. Med. PI. t.bl; Hume Citrus f. 4 <*/. 15 ; P. Wih. 

 torn. cit. 223 ; Bonavia op. cit. 19, t. 40-58. C. sinensis Osbeck 

 Daghok Ostind. Mesa 41 (1757) (name only) & Peise Ostind. 

 China 250 (1765), Jide Swingle op. cit. 148. C. Aurantium var. 

 dulcis Wright Mem. 203 ; Macf. in Hook. Bot. Misc. i. 301 «fe Jam. 

 i. 128. Malus Aurantia sinensis Sloane Cat. 211 <fe Hist. ii. 181. 

 C. fructu sphserico. . .dulci &c. Browne Hist. Jam. 309. Auran- 

 tium sinense Miller Gard. Diet. ed. 8 (1768). Leaves of both 

 C. Aurantium L. & C. vulgaris Ris.so are included on the same 

 sheet in Herb. Linn, and named Aurantium by Linnaeus. 



Orange. 



Cultivated and spontaneous ; native of China and Cochin-china. 



Tree 20-30 ft. high ; branches generally armed with short spines in the 

 leaf-axils. Pedwncfes solitary, axillary, 1-6-flowered, generally shorter than 

 the petiole. Flowers very fragrant, white. Calyx 3-4 mm. I., with 3-5 



