177 
Pericycle 
THE ROOT 
Endodermis 
es 
EQ 
ss 
2 Qs 
s = 
5 yo 
x 3 ee 
oC g s& 3 
ws O CS -] 
SS x) sae mS 
A - t ! / 
\ H / / 
se) | / 
Acct 
(From Curtis.) 
f ee Sr oeig, i ‘ ‘ _ 
ae an 
i . } 4 a 
e 
a 
aS 
Se 
aa Ss 
ENG 
Oe:' 
Cross section of root of lupine, showing a secondary root breaking 
through the cortex. 
108. 
Fig; 
(Marshall.) 
Fic, 109.—Root system of a legume showing tubercles. 
