150 ON SEEDLINGS 



petiolate, glabrous, green, rather distinctly pinnatinerved ; petioles 

 from 2-5 cm. long, reddish, channelled on the upper side. 



Stem erect, quadrangular, rather flattened, pubescent, herb- 

 aceous ; 1st internode 3-4 mm. long. 



Eicotia Lunaria, DC. 



Hypocotyl terete, striate, rather slender, 5-7 cm. long. 



Cotyledons suborbicular, broad, emarginate or bifid, rather 

 coarsely reticulate, unequal, especially as regards the length of the 

 petioles ; lamina of two good-sized specimens 2-5 and 2-7 cm. long, 

 2-6 and 2'7 cm. wide respectively ; petioles shallowly grooved above, 

 2-9 and 3-5 cm. long. 



Stem finely pubescent with the first internode shortly elongated 

 or not. 



Leaves simple, mostly cauline, alternate, exstipulate, petiolate, 

 usually much cut. 



Nos. 1 and 2. Pinnatisect, with five more or less toothed seg- 

 ments. 



Nos. 3-6. Pinnatisect or (mostly) bi-pinnatisect. 



Alyssum maritimum, Lam. 



Hypocotyl erect, terete, glabrous, 8-9 mm. long, purplish. 



Cotyledons oval, obtuse, entire, petiolate, glabrous, green, sub- 

 fleshy, indistinctly one-veined; petioles rather short, shallowly 

 channelled on the upper face. 



Stem erect, terete, herbaceous ; primary internodes but slightly 

 developed. 



First leaves simple, entire, cauline, alternate (first pair opposite), 

 linear-oblong or lanceolate, obtuse, exstipulate, petiolate, covered 

 with minute silky hairs, green, pinnatinerved. 



Cochlearia glastifolia, L. 



Primary root forming a long tap-root, with numerous lateral 

 rootlets. 



Hypocotyl very short, terete, glabrous, purple, 2-3 mm. long. 



Cotyledons suborbicular, emarginate, glandular in the notch, 

 slightly oblique at the apex, glabrous, petiolate, opaque above, ob- 

 scurely trinerved beneath; lamina 5-9 mm. long, 6'5-9 mm. wide ; 

 petiole semiterete, flattened above, widened and slightly connate at 

 the base, 4'5-6'5 mm. long, purple. 



Stem with the internodes undeveloped. 



Leaves simple, radical, alternate, exstipulate, petiolate, glabrous, 



