336 ON SEEDLINGS 



and the lateral nerves run down the centre of the lateral 

 lobes, giving off a few strong branches. The midrib forks or 

 gives off two lateral branches close beneath the sinus, and 

 these pass along the contiguous edges of the lobes a short way 

 within the margin. The first pair of leaves of C. Kaempferi 

 are ovate followed by two subcordate pairs. All the three pairs 

 in C. syringsefolia are cordate. The first pair in C. speciosa 

 are subcordate followed by three cordate pairs. In all cases 

 these primary leaves are slightly dentate. The ultimate leaves 

 are entire or sometimes shallowly trifid in C. Kaempferi. 



The cotyledons of Tecoma stans closely correspond to 

 those of Catalpa syringaefolia and are also trinerved. The 

 first five pairs of leaves are however lanceolate, acuminate 

 and sharply serrate. The cotyledons of Tecoma Manglesii 

 are similarly divided, but without discernible venation in 

 the fresh state, and the lobes overlap one another at the 

 sinus. The first pair of leaves are small, ovate and entire. 

 The second pair are digitately trifoliolate, and the third pair 

 pinnately trifoliolate, both with more or less toothed leaflets. 

 The fourth and fifth pairs have five leaflets ; the sixth and 

 seventh have seven leaflets ; and the eighth and ninth have 

 nine. The cotyledons of Spathodea adenophylla may be 

 compared with those of Tecoma stans. The first pair of leaves 

 are oblong-lanceolate and serrate. 



A slight modification of the above is met with in Spath- 

 odea campanulata (fig. 572). The cotyledons are oblate and 

 shallowly bifid or deeply emarginate. An obscure midrib is 

 the only venation apparent. The first three pairs of leaves 

 are elliptic, serrated except in the lower third of their length, 

 and hairy. Tecoma radicans differs only in showing three 

 branching nerves in the cotyledons. Those of Kigelia pinnata 

 have five branching nerves from the base. The hypocotyl 

 is subterranean or very short ; and the first three leaves are 

 rather large, lanceolate-oblong and serrate. The cotyledons 

 of Eccremocarpus scaber (fig. 574) are broadly emarginate 

 with a tooth in the notch, trinerved at the base with a pair 

 of strong lateral nerves about the middle, thinly glandular- 

 hairy on both surfaces and glandular-ciliate. The hypocotyl 

 is also finely glandular-pubescent. The first pair of leaves 



