174 



ON SEEDLINGS 



base of the style, woody, pale-coloured, indehiscent, one- to two-celled, 

 with generally a seed in each cell. 



Seed more or less cochleate by the shrinking of the testa to con- 

 form to the embryo, otherwise, when fresh and plump, nearly globose 

 with the radicle appearing as an appendage at one side ; micropyle 

 close to and superior to the hilum ; chalaza forming a broad orbi- 

 cular discoloured patch on the ventral aspect. 



Pio. 176. Bunias orientalis. A, Germinating seed, x 3. B, Seedling, nat. size. 



Endosperm in the mature seed forming a thin film lining the 

 interior of the testa. 



Embryo large, filling the seed, spirally coiled, pale yellow ; coty- 

 ledons oblong, obtuse, entire, forming about a coil and a half, with 

 their tips in the centre of the coil, and the edges of both touching 

 the sides of the seeds, narrowed to the base ; radicle cylindrical, 

 obtuse, incumbent and curved round close to the hilum and beneath 

 the base of the style, long, and well developed. 



Seedling (fig. 176). 



Hypocotyl very short, stout, erect, wrinkled transversely, pale 

 green or colourless, 2-6-5 mm. above the soil. 



Cotyledons unequal in length, spathulate, obtuse, entire, or show- 



