200 



ON SEEDLINGS 



Stem stout, erect, purple-brown, pubescent, soon becoming 

 woody ; 1st internode 7-10 cm. long ; several succeeding ones 

 short. The long first internode is to make up for the non-develop- 

 ment of the hypocotyl. 



Leaves thinly pubescent. 



Nos. 1-6. Oblong or lanceolate-elliptic, rather crowded above 

 the first internode. 



Lucuma sp. (fig. 607). 



Primary root long, stout, tapering 

 downwards and quite unbranched in 

 the early stages. 



Hypocotyl very short, stout, sub- 

 terranean. 



Cotyledons very large, fleshy, plano- 

 convex or slightly concave on the upper 

 surface, sessile or narrowed to very 

 short petioles which are connate around 

 the axis, subterranean or appearing 

 just at the surface of the soil, bursting 

 the woody testa into two halves and 

 spreading horizontally, or often one be- 

 comes suberect while the other is de- 

 flexed; lamina 3-3-6 cm. long, 1-8-2 

 cm. wide, about 1-2 cm. thick, and 

 becoming deep green on the upper sur- 

 face when exposed to light. 



Stem erect, stout from the earliest 

 stages, and soon becoming woody, 

 densely hairy or subvillous, terete or 

 tapering upwards ; 1st internode 5-6 

 cm. long ; 2nd very much shorter. 



Leaves as in Chrysophyllum but 

 with parallel slender veins, showing 

 most prominently on the under surface, 

 ultimately coriaceous; petioles terete 

 or subterete, densely hairy. 



First pair opposite, rather small, 

 unequal, showing that they are not 

 truly opposite, lanceolate-elliptic, acute, 

 slightly undulated at the margin at least when young. 

 No. 3. Alternate. 



FIG. 507. Lucuma sp. Showing 

 the two halves of the testa 

 attached to the cotyledons. 

 Half nat. size. 



