SOME RECENT AND FOSSIL FAGACEÆ. 441 
Fagus Engleriana. 
. 23 a. Under epidermis, x 135, Delicate stomata surrounded by tubular hairs. 
. 24. 
. 25 
bo 
~I 
. 236, Under epidermis, X 540. Four small stomata, depressed at the junctions of the 
guard cells, 
Upper epidermis, x 185, Compare this with Fagus sinensis. 
Fagus grandifolia. 
Under epidermis, x 135. 
. 26a. Under epidermis, x 540. Broad guard cells with thickened junctions and small 
pores. Slightly sinuate parenchyma, 
. 264. Upper epidermis, x 135. 
Fagus orientalis. 
Under epidermis, x 135.  Stomata with slightly thickened cuticular rims aud 
flattened at the poles. Finely sinuate parenchyma, 
. Under epidermis, x 540. Three stomata. Delicate, very slightly sinuate paren- 
chyma. 
Fagus Sieboldii. 
29, Under epidermis, x 135. Very delicate, showing hairs and thin-walled parenchyma 
and stomata. 
. Under epidermis, x 510. Very delicate stomata, variable in size, surrounded by 
thin straight-walled parenchyma. 
Fagus sinensis. 
. Under epidermis, x 135. Stomata enclosed by long tubular hairs. 
2. Under epidermis, x 540. Delicate stomata and thin-walled straight parenchyma. 
. Upper epidermis, x 135. Compare this with Fagus Engleriana (fig. 24). 
Fagus bournensis. 
. Complete leaf, V. 15900, British Museum (Nat. Hist.) Geol. Dept. 
. Cuticle of under epidermis, x 135. Venule with hair-bases. Stomata of varying 
size. Sinuate parenchyma. 
. Cuticle of under epidermis, x 540. Broad guard cells of varying size, with inner 
thickened cuticular rims, slightly thickened junctions, and horizontal cutinizations. 
Sinuate parenchyma. 
