376 



ON SEEDLINGS 



rally compressed, especially near the apex, splitting vertically into 

 two pieces during germination. 



Seed transversely oblong, much compressed laterally, especially 

 near the top, and conforming to the interior of the endocarp ; testa 

 thin, pale brown, marked on both sides by the branching chalaza, 

 where the seed is discoloured ; funicle stout, lying in an indenta- 

 tion round one end of the seed ; micropyle superior. 

 Endosperm none. 



Embryo large, curved, transverse to the axis, pale greenish- 

 yellow or almost colourless, fleshy ; cotyledons conforming to the 

 interior of the seed and each occupying about a half of it, lying 

 transversely to the basal placenta with their very much thickened 

 edges towards it, and their thin indented edges to the apex of the 

 endocarp, which is also indented and always much compressed, caus- 

 ing the cotyledons to be more or less asymmetrical ; radicle at one 



end of the embryo, terete, 

 obtuse, curved round the 

 basal end of the cotyledons 

 and pointing upwards. 



Seedling (fig. 258). 



Hypocotyl erect, terete, 

 fleshy in a very young 

 state, glabrous, pale green, 

 or tinged with red, soon 

 becoming brown, 18 mm. 

 long. 



Cotyledons fleshy and 

 soon falling away, ob ovate, 

 very oblique or unequal - 

 sided and also having one 

 edge thin and the other 

 thick, petiolate, glabrous, 

 wrinkled or corrugated on 

 the upper surface and 

 margin, ribbed more or less 



FIG. Z58.-Buchanania latifolia, showing thin conspicuously On the under- 





edge of cotyledons. Nat. size. 



surface ; lamina 6'5-7'5 

 mm. long, 5-5*5 mm. 



wide, 2 mm. thick at one edge and -25 mm. thick at the other; 

 petioles connate at the base, grooved above, convex on the back, 

 2-4 mm. long. 



