ise _ ELEMENTARY BOTANY 
4. The bud arises in the axil of 
similar brown scales at the top of the 
stem, and consists of | 
(a) a succession of hese 
leaves ; 
(>) a few green leaves ; 
(c) floral leaves enclosed in the 
sheath. 
Generally a corm bears many 
buds, and the previous year’s corm, 
very much shrunk, often remains 
attached to its under surface. 
-puber of - A_tuber arises as a 
Potato. swelling on a branch, 
which is 
‘Fic. 25,—Corm or Crocus, formed in 
LonerrupinaL Sxcrion. the axil of 
c, corm of previous year; . theleaf, but 
<7, Teots ; st, stem +. -¢.s¢, : 
covering scales ; sh./, sheath- makes its 
ing leaves ; fl, green leaves ; way under- 
flor, floral leaves. 

ground. If 
this underground structure be made 
to grow in the light, it will bear 
ordinary green leaves and produce 
no tubers. The tuber bears on its 

Fic. 27.—SEEDLING OF 
PorTatTo. 

t, tuber ; c, cotyledon ; sé, 
, , stem ; fl, foliage leaves; rt, 
Fic, 26.—TuBer oF Potato. root system. 
e, eyes; sc.l, scaly leaf ; ae, aerial shoot. 
