59° 



BOTANY OF CROP PLANTS 



Geographical. — All the species in this genus are natives of South America. 

 iJunal, in DeCandoUe's Prodromus, gives lo species of Lycopersicnm; this 

 number is reduced, however, by some writers. Tomatoes are warm season 

 "vegetables" that require transplanting in central and northern latitudes. 



Important Species and Varieties, — There is a difference of 

 opinion whether to consider certain forms of tomatoes 

 species or only varieties. For example, Bailey recognized 



but two cultivated species of Lycopersicnm: L. esculenluni, 

 the common tomato, and L. pimpincllijolinin, the currant 

 tomato. L. esculenlum is, according to Bailey, dixided itUo 

 the following varieties: 



1. L. esculenlum var. vulgare, garden tomato. 



2. L. esculenlum var. cenisiforme, cherr}- tonuito. 



3. L. esculenlum var. l)yriformc, pear or plum tomato. 



4. L. esculenluni var. validum, upright tomato. 



5. L. esculenluni var. grand if olium, large leaf tomato. 



L. pimlyincllifoliuni is not subdi\idcd. On the other hand, 

 'I'rai}' regards as distinct species: L. pimpinellijolium, L. 



