CHAPTER XIII 



CLASSIFICATION OF VEGETABLES 



The number of different kinds of vegetables is so large that, 

 unless the kinds that are similar in certain particulars are grouped 

 together, it is extremely difficult for the student to remember the 

 details regarding the culture and uses of each crop. The matter 

 is very much simplified if the crops are grouped according to their 

 cultural requirements. Some suggestions regarding the grouping 

 of crops, based upon their temperature requirements, were given 

 in Chapter VII. A more complete classification, including sub- 

 divisions of the various groups, is given here. Only those vege- 

 tables are included in this classification which are to be treated 

 in the present work. 



I. Cool Season Crops: — 



1. Cool season crops that quickly reach edible maturity: 



(a) Spring salads — 



Leaf lettuce, Laciuca saliva. 

 Garden cress, Lepidiuni sativum. 

 Com salad, Valerianella olitoria. 



(b) Spring greens — 



Spinach, Spinacea oleracea. 



Mustard, Brassica nigra, B. alba, B. juncca, and B. Japonicc. 



(c) Short season root crops — 



Radishes, Raphanus sativus. 



Turnips, Brassica Rapa. 



Kohlrabi, Brassica oleracea, var. caulo-rapa. 



Rut a bagas, Brassica campestri. 



(d) Peas, Pisum sativum. 



2. Cool season crops that usually are transplanted: 



(a) Spring crops that mature before the heat of summer — 



Head lettuce, Laciuca saliva, var. capitata. 



Cos lettuce or romaine, Laciuca saliva, var. Romana. 



Early cabbage, Brassica oleracea, var. capitata. 



Early cauliflower, Brassica oleracea, var. botrytis. 

 (6) Crops that make their principal growth in the cool weather of 

 autumn — 



Late cabbage, Brassica oleracea, var. capitata and var. bullala. 



Late cauliflower, Brassica oleracea, var. botrytis. 



Broccoli, Brassica oleracea, var. botrytis. 



Brussels sprouts, Brassica oleracea, var. gemmifera. 



Celery, Apium graveolens. 



Celeriac or turnip-rooted celery, Apium graveolens, var. rapaccum. 



3. Cool season crops that will endure summer heat : 



(a) Root crops that endure summer heat but not winter freezing — 

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