THE LITCHI AND ITS RELATIVES 325 



sionally attacks weak trees. The larva? of a moth (Archips 

 postmttanus Walker) sometimes injure the foliage and flowers. 

 A disease which has been termed erinose, caused by mites 

 of the genus Eriophyes, has been reported from Hawaii, where it 

 has become serious on certain litchi trees. Spraying with a 

 solution of 10 ounces nicotin sulfate and If pounds whale-oil 

 soap in 50 gallons of water was found to eradicate the mites. 



Varieties. 



Since the litchi has been propagated vegetatively from ancient 

 times, it is natural that many horticultural varieties should be 

 grown at the present day. Most of these, however, are un- 

 known to the western world. Recently they have been studied 

 by Groff, and it is to be hoped that the best will be brought to 

 light, and their successful introduction into the American tropics 

 realized. 



The variety Loh mai chi is said to be one of the best in the 

 world. It is grown in the vicinity of Canton. Haak ip is an- 

 other Canton litchi said to be choice. All together thirty or forty 

 kinds are reported from this region, some of them being particu- 

 larly adapted for drying, others for eating fresh, and so on. 



The varieties cultivated in India are not in all instances 

 clearly distinguished. The best known is Bedana (meaning 

 seedless), a medium-sized fruit in which the seed is small and 

 shriveled. Probably several distinct sorts are known by this 

 name. McLean's, Dudhia, China, and Rose are other varietal 

 names which appear in the lists of Indian nurserymen. 



THE LONGAN 

 (Euphoria longana, Lam.) 



Opinions differ regarding the value of the longan. It is 

 popular among the Chinese, but Americans who have tested 

 longans produced in California and Florida have not as a rule 

 considered them good. Frank N. Meyer says that they are 



