it, as forms of one species, by several excellent authors, 
together with other fruits which do not concern us 
here. 
The genus Citrus is essentially an Eastern one, and the 
forefathers of Oranges, Lemons, Citrons, and Limes are 
certainly tropical Asiatic, and may be found (though 
whether always in their pristine condition, as opposed to 
escapes from cultivation, is not easy to determine) in the 
hot valleys of the Himalaya, of the mountainous districts 
of Eastern Bengal, and of the Deccan. From tropical Asia — | 
they have, in their numerous cultivated forms, been trans- 
ported into Africa, Australia, and the New World, where 
the Orange extends into the temperate zone; and the 
Jemon also, but with less power of enduring cold; whilst 
the small acid Lime seems confined to tropical or sub- 
tropical zones, Hence I do not find any plant exactly 
answering to the latter in the magnificent work of Risso and 
Poiteau illustrating the South European Oranges and 
Lemons, whilst in the Floras of the East and West Indies 
it is always included. 
The first good account of it is by Rumph (* Hortus 
Amboinensis,” vol. ii. p. 107, t. 29), published in 1750. 
He describes dt under the Latin name of LTimonellus, alias 
Limotenuis, or thin-skinned Lemon, answering to the 
Malayan name of Limon Nipis (in Dutch, Liemis-Boom), as _ : 
a Spinous bush with small leaves much brighter than those 
of the other Lemons, small flowers with the odour of those 
of the Lime of Martinique, five petals, spherical, smooth, 
fruit the size of an apricot, skin citron-coloured extremely 
thin, pulp greenish-white gratefully acid, having a de- 
lightful odour and taste. He adds that it is found in all 
the Oriental Islands, but never in the woods, always near 
houses, implying that it is not indigenous. The only 
author who has definitely taken up Rumph’s plant is — 
Hasskarl, who, in his first * Catalogus Horti Bogoriensis,” 
published in 1844, has CO. Limonellus, with two vars., @ 
pointed-fruited and rounded-fruited ; and in the second — 
edition of the same work (1866) he publishes (. Limonellus, 
var, globosa, from Amboyna. B, Hamilton had previously 
alluded to it in his “ Commentary on Rumph’s Hortus 
Amboinensis ” (Wern. Trans. vol. vi.); and the name C. 
Limonellus, Ham., accompanies specimens of a plant. col- 
