624 BOTANY OF CROP PLANTS 



The citron is not to be confused with the true citron {Citrus 

 medico) (see page 480) . 



Rane divides the varieties of watermelons into six 

 "classes:" (i) light green (Light Icings Gray Monarch); 

 (2) medium green (Fordhook Early, Jackson); (3) dark 

 green (Black Spanish, Mountain Sweet, Cannon Ball) ; (4) 

 light-striped (Golden Gate, Delaware, Hoosier King, Rattle- 

 snake, Santiago); (5) dull-striped (Price of Georgia, Orange, 

 Triumph); and (6) mottled green (Nabob Phinney's Early). 

 These "classes" are subdivided into "types" according to 

 shape of fruit, and the "types" are each divided into two 

 groups: those with light seeds, and those with dark (black 

 or brown) seeds. 



References 



CoRBETT, L. C: Cucumbers. U. S. Dept. Agr. Farmers' Bull. 254: 1-30, 



1906. 

 Crocker, W., Knight, L. S., and Robert E. : The Peg of the Cucurbitaceae. 



Bot. Gaz., 50: 321-339, iQio- 

 Griffin, H. H.: The Cantaloupe. Colo. Agr. Exp. Sta. Bull. 62: 1-18, 1901. 

 Pammel, L. H.: Crossing of Cucurbits. Bull. Torrey Bot. Club, 20: 358-359, 



1893. 

 Results of Crossing Cucurbits. la. Agr. Exp. Sta. Bull. 23: 906-917, 1894. 

 Rane, F. W. : Fertilization of the Muskmelon. Proc. Soc. Prom. Agr. Sci.. 



150-151, 1898. 

 II. Classification of Watermelons. N. H. Agr. Exp. Sta. Bull. 86: 95-107, 



1901. 



