278 



BOTANICAL GAZETTE 



[APRIL 



of thin-walled cells with longitudinally elongated, cuticularized. 



1 pidermal cells. 



am — ••• 



Fig. 6,— Cucurbila Pepo L. Seed in cross-section; 5, sperm 



oderm con^ting of 



1 -..k^nirier- 



1 10. v.—l ucurtnta fepo L. heed in cross-section; a, B P WU *~*T j su bepide 

 e/>, ribbed palisade cells of epidermis containing am, starch grains, hy, pitted - 

 mal layer, «/, sclerenchyma, »i, pitted parenchyma, W», reticulated S P° &- v n - 



chyma, />■, parenchyma, '/», spongy parenchyma, and pi, inner epidermis, ^^ 

 sperm; E, endosperm consisting of aleurone cells; C, cotyledon containing . 



grains. X 160. 



(figs. 5 , 6, £).— This consists of a single layer of«^ 



with thickened walls, containing granular protoplasm 



central nucleus. 



