

A NE ELEMENTARY BOTANY 
4. The bud arises in the sal of. 
similar brown scales at the top of the 
stend, and consists of 
(a) a succession of sheathing 
| leaves ; . 
(6) a few green leaves ; 
(c) floral leaves enclosed in the 
z - sheath. 
Generally a corm bears many 
buds, and the previous year’s corm, 
very much shrunk, often remains 
attached to its under surface. 
“2 aber of A tuber arises as a 
Potato. swelling on a branch, 
which is 
formed in 










Fic, 25,—Corm or Crocus, ; 
. Lonerrupinan Szcrion. the axil of 
c, corm of previous year; theleaf. but 
7, TOOtS 5. St,-stem >. -¢.S¢, oe 
covering scales ; sh./, sheath- makes its 
ing leaves ; fl, green leaves ; way under- 
flor, floral leaves, 
ground, Lf 
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 
POTATO. 
t, tuber; c, cotyledon ; st, 
3 stem ; jl, foliage leaves ; 7, 
e, eyes; sc./, scaly leaf ; ae, aerial shoot. 

