176 ON SEEDLINGS 



fusiform, slightly curved in conformity with one side of the seed, 

 much longer than the cotyledons, and terminating in the pointed 

 end of the seed, considerably curved at its union with the cotyledons, 

 pale yellow, obtuse. 



For further development see Goebel, ' Flora,' 1889, p. 32. 



Seedling (fig. 177). 



Hypocotyl erect, terete, glabrous, pale green, 6-18 mm. or more 

 above the soil. 



Cotyledons unequal, broadly cuneate, ernarginate or broadly and 

 shallowly bifid, petiolate, with one or two alternate, ascending, diffi- 

 cultly discernible nerves entering the lobes, rather fleshy, glabrous, 

 bright green ; lamina of the smaller one 6'5-8 mm. long and as 

 wide ; of the larger 8'5-10 mm. long and 

 7'5-ll mm. wide ; petiole semiterete, flat- 

 tened above, slightly connate at the base, 

 glabrous, light green ; of the smaller coty- 

 ledon 8-10 mm., of the larger 7'5-8'5 mm. 

 long. 



Stem erect, terete, glabrous, pale green, 

 ultimately shrubby; first internode '5-2 mm. 

 long. 



Leaves simple, cauline, alternate, petio- 

 late, alternately and ascendingly penni- 

 nerved with the nerves incurved uniting at 

 their apex and anastomosing indistinctly, 

 with a prominent midrib, but the other 

 . size, venation best discernible on the under side, 

 rather fleshy, glabrous, light subglaucous- 

 green, and somewhat shining when young ; petioles slightly flattened 

 above or biconvex with a prominent midrib, glabrous. 



Nos. 1 and 2. Spathulate, obtuse, with rather long petioles, and 

 one to two obscure or obsolete teeth on each side. 



Cakile maritima, Scop. (fig. 178). 



Hypocotyl erect, terete, glabrous, 4-5-5 cm. long, light green or 

 colourless. 



Cotyledons unequal, rather fleshy, linear, obtuse, entire, sessile, 

 tapering to the base, but not petiolate, glabrous, light green, one- 

 veined. 



Stem erect, terete, herbaceous. 



Cakile americana, Nutt. 



Hypocotyl as in C. maritima but only 5-10 mm. long. 



