36 



MORPHOLOGY OF SPERMATOPHYTES 



THE LEAF 



The foliage leaves are very characteristic in form and vena- 

 tion, resembling in this regard some of the Ferns. The petiole 



Eia. 27. — Ginkgo biloba. Taken originally from ■! water-color painting by a Chinese 

 artist. — After Seivaed and Gowan. 



is long and slender, the blade is broadly wedge-shaped and vari- 

 ously lobed, and the venation is distinctly dichotomous (Figs. 



