CEUCIFEILE 163 



In the accompanying sketch, A and B represent stages of the 

 germinating seedling. 



Brassica elata, Ball 



Hypocotyl undeveloped or indistinguishable from the primary 

 root, subterranean. 



Cotyledons small, transversely oblong, broadly and shallowly 

 emarginate, slightly unequal, glabrous, rather fleshy or succulent, 

 with a faint midrib, but no other venation apparent in the fresh state ; 

 lamina in an average of three larger ones 3'6 mm. long, 5 - 75 mm. 

 wide ; of three smaller ones 3'5 mm. long, 5 mm. wide ; petioles 

 flattened above, slightly connate at the base, unequal ; average of 

 three longer ones 4-3 mm. long ; of three shorter ones 3-5 mm. 

 long. 



Leaves densely pubescent or hairy on both surfaces, petiolate. 



Nos. 1 and 2. Eotund-obovate, obtusely dentate. 



No. 3. Obovate, slightly lobate at the base, and obtusely dentate. 



Nos. 4 and 5. Lyrate pinnatificl, with the terminal segment much 

 the largest, rotund or oblong, dentate. 



Brassica rugosa, Eoxb. 



Primary root stout, with lateral rootlets, annual. 



Hypocotyl very short and tapering indistinguishably into the 

 primary root, pale green or colourless, with its original epidermis 

 soon splitting. 



Cotyledons cuneate, bifid, with rounded obtuse lobes, petiolate, 

 with one or at most two alternate, ascending nerves running into 

 each lobe, glabrous, succulent, deep green above, paler beneath ; 

 lamina in an average of three larger ones 9-75 mm. long, 11 mm. 

 wide ; of three smaller ones 8'58 mm. long, 10-08 mm. wide ; 

 petioles flattened above or shallowly grooved, convex on the back, 

 glabrous, unequal ; average of three longer ones 10'08 mm. long, 

 of three shorter ones 9-6. 



Stem erect, terete, slightly angular, annual, glabrous, light 

 green ; two primary internodes generally undeveloped. 



Leaves glabrous or slightly hairy and glabrescent when old, 

 alternately and ascendingly penninerved, reticulate ; petioles semi- 

 terete, grooved above, stout. 



Nos. 1 and 2. Spathulate, obtuse, serrato-dentate. 



No. 3. Oblong, obtuse, coarsely serrato-dentate. 



Nos. 4 and 5. Obovate, obtuse, coarsely, irregularly and some- 

 what doubly dentate-serrate, with glandular-mucronate serratures. 



M 2 



