ON THE ONION FAMILY 



sometimes remaining in the ground several years, 

 part of them germinating each season. 



About the only way to eradicate it completely 

 from the grain and other crops, is to pull it just 

 as it comes into bloom in successive seasons. 



My systematic work of selective breeding of 

 the mustards was carried out while making similar 

 experiments with other members of the family, 

 including the turnips, cabbages, and radishes. I 

 developed some superior varieties by selection, 

 and sent the seed east to various parts of the world. 

 But the demand was small and I presently dis- 

 continued work with these plants, although several 

 of these and similar varieties developed are still 

 catalogued by some American and European 

 seedsmen. 



Other Crucifers that the gardener thinks of 

 collectively, though they represent various genera, 

 are the peppergrass and the various cresses, 

 including the nasturtium. 



The common peppergrass is as variable as the 

 lettuce. There are large numbers of plants 

 horticulturally called cresses, with a considerable 

 range of variation. 



One of the most interesting forms with which 

 I have worked is a Chilean cress {Nasturtium 

 Chilensi), which is as tender as the common water 

 cress during the rainy season, and which has an 



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