m) 



BARBER-FRUITS AND SEEDS OF CUCURBIT ACE AE 



289 



2. Hvpoderm (hy). -The cells of a number of layers beneath the 

 epicarp are thickened and pitted. Below the thick-walled epidermal 

 celLs they are of 



medium size 

 with intercellular 



-paces; under 

 the thinner epi- 

 dermis of the 

 grooves, through 

 which they are 

 visible, they are 

 larger and thin- 

 ner-walled with 

 very large pits. 

 Chlorophyll is 



present in greater 



or less amount even though the fruit appears yellow, 



■ 1 ^_ 



BqaMjl. 



— ejji 



»«*~ ^.-Cucumis Melo L. Pericarp in "«**£"'> 

 epi, epicarp with t, hair, sto, stoma; hy, hypoderm. X 160. 



riFic. 17 



3. 4, 5- 



ocarp 



sist of cells similar to those of 

 the corresponding layers of C 

 sativus. The placentae , ~" 



how 



ever, instead of persisting in- 



are almost if not quite 



tact, 



* 



broken down. 

 6. 



P 



As in C. saii- 



Wl the cells are thin-walled 

 and longitudinally elongated. 



vus, 



Epidermis 



(fig- 'V 

 p). Seen in sur- 



f a f e vi ew the cells are polygonal 



cross-section they reach 



Fig. 18.— Cucumis Melo L. Seed in 

 ^oss-section ; 5, spermoderm consisting of 

 '*> e Pidermis, sub, subepidermal layer, scl, 

 50 erencr »yma, pi, sclerenchymatized spongy 

 Parenchyma, /»», spongy parenchyma; N, 

 ^sperm; E, endosperm; C, cotyledon with 

 '(' e P ,der mis, and mesophyll containing al, 

 a| eurone grains. X160. 



and in 



The outer 



a length of 200 **. iUC " 



tall is thickened and the «h,n 

 ^al walls have the character- 



ures 



thickenings, 

 this layer 



Harz 26 ng- 

 with rod- 



,6 Loc.cit., footnote 7, P- 777- 



