164 ON SEEDLINGS 



Brassica balearica, Rich. 



Primary root biennial. 



Hypocotyl erect, terete, glabrous, soon becoming glaucous- 

 purple, 12-18 mm. long. 



Cotyledons cuneate-obcordate, with rounded obtuse lobes on each 

 side of the sinus, and about three alternate ascending nerves on 

 each side, passing into the lobes, or the upper pair short and 

 apparently formed by the forking of the midrib ; deep glaucous-green 

 above, paler and glaucous beneath, petiolate, glabrous, unequal; 

 lamina of the longer cotyledon 8-10 mm. long, 11-13 mm. wide ; 

 of the smaller one 7-8-10 mm. long, 9-11 mm. wide ; longer 

 petiole on the larger cotyledon about 10-13 mm. long; shorter 

 petiole 8-10 mm. 



Stem erect, terete, glaucous-purple, glabrous ; 1st internode 

 1-2-25 mm. long, 2nd 4-7 mm. 



Leaves glabrous, glaucous, with the midrib and principal nerves 

 purple, alternately penninerved, reticulate. 



No. 1. Obovate, slightly crenate. 



No. 2. Oval, coarsely crenate. 



Nos. 3 and 4. Suborbicular or oblong-orbicular, coarsely and 

 irregularly crenate, slightly decurrent on the petiole in small lobules. 



No. 5. Oblong, obtuse, lobulate and crenate, decurrent on the 

 petiole forming small lobules. 



Brassica Aristidis, Coss. 



Hypocotyl erect or procumbent, terete, green or purple, glabrous 

 or nearly so, slightly striate, soon losing its epidermis by splitting, 

 8-15 mm. long. 



Cotyledons very similar to those of B. balearica, fleshy, light 

 green above, paler or glaucous beneath ; average of the three larger 

 laminae 13-3 mm. long, 15-4 mm. wide ; of three longer petioles 

 15-83 mm. long, of the shorter 14-6 mm. 



Stem developed when about to flower ; primary internodes un- 

 developed. 



Leaves radical and cauline, alternately penninerved, pubescent 

 on both surfaces with adpressed hairs. 



No 1. Small, obovate, shallowly crenate. 



No. 2. Deltoid, obtuse, coarsely crenate. 



Nos. 3 and 4. Deltoid, obtuse, coarsely crenate, somewhat de- 

 current and slightly lobulate on the petiole. 



Nos. 5 and 6. Lyrate, pinnatifid, lobulate and coarsely crenate ; 

 terminal lobe much the largest, deltoid, lobulate, and coarsely 

 crenate. 



