24 On the different Species, §c. of the Genus Brassica. 



for 1789, under the name of Chou dfaucher. It is perfectly* 

 intermediate between the Colsa and Chou-navet, and therefore 

 to be considered an hybrid between the two races ; the root is 

 fusiform, slender as in the Colsa, but much longer, the stalk 

 is short, like that of the Chou-navet, but not so thick, the radi- 

 cal leaves numerous, hispid on the edges, and on the nerves 

 underneath ; they have a long petiole, and are lyre-shaped ; 

 the plant bears frequent cutting as food for cattle. 



Third Race. Brassica campestris Napo-Brassica. 



Chou-navet. Navew. 

 The third race of Field Cabbage is that of the Napo- 

 Brassica, Chou-Navet (Navew), easily distinguished from 

 the two former by its root being swelled into a tuber near 

 the origin of the stem. Duchesne and other authors have 

 considered this plant as belonging to the Brassica oleracea ; 

 it is commonly confounded with the Chou-rave, Brassica 

 oleracea Caido-Rapa, but it decidedly belongs to the Brassica 

 campestris, its young radical leaves being hispid in the same 

 manner as in the Colsa : this race comprises two distinct 

 varieties, the common Chou-navet, and the Ruta-baga ; the 



* Mr. Morgan, in the paper before referred to, (Horticultural Transactions, 

 Vol. ii. page 315,) has described four kinds of Winter Greens without stems, and 

 with fusiform roots, with which M. De Candolle does not appear to be 

 acquainted; their dwarf habit* ally them to the Brassica campestris, while other 

 properties shew their affinity to the Brassica oleracea acephala or tall Cabbages ; 

 the first, however, nearly approaches the character of this second race of the 

 Brassica campestris, whilst the three last will probably be considered as of hybrid 

 production between the two above-named species. Their names as given by Mr. 

 Morgan are, 1st. Egyptian Kale, or Rabi Kale: 2nd. Ragged Jack; 3rd. Je- 

 rusalem Kale, and 4th. Buda Kale. Sec. 



