446 The Principles of Vegetable -Gardening 



nothing green to be had in the open garden, and they, 

 can be cut continuously for a month or more. This 

 dock is the Herb Patience, or Rumex Patientia of the 

 botanies. It has long been an inhabitant of gardens, 

 and it has sparingly run wild in some parts of this 

 country. It is a native of Europe. The Belleville is 

 also a European plant, and is really a sorrel. It is 

 Rumex Acetosa of botanists. It has also become spon- 

 taneous in some of the eastern parts of the country. 

 It has thinner, lighter green and longer -stalked leaves 

 than the spinage dock, with spear-like lobes at the base. 

 The leaves are very sour, and will probably not prove to 

 be so generally agreeable as those of the spinage dock; 

 but they are later, and afford a succession. In some 

 countries this sorrel yields oxalic acid sufficient for com- 

 mercial purposes. The Round -leaved or true French 

 sorrel (Rumex scutatus) would probably be preferable to 

 most persons. 



"All these docks are hardy perennials, and are very 

 acceptable plants to those who are fond of early 

 'greens.' Some, at least, of the cultivated docks can 

 be procured of American seedsmen." Bull. 61, Cornell 

 Exp. Sta. 



ARTICHOKE 



Two very unlike plants are known as artichoke. The 

 one commonly known under that name in this country 

 is the plant known abroad as Jerusalem artichoke. It is 

 one of the sunflower tribe and is grown for its thick, 

 potato -like, underground tubers. The other, or the true 

 artichoke, is a plant allied to cardoon and thistles, and 



