Be ee eee, ee ee eS eS ee ee eT eT ee ee ree ae 
ee eae I i eee ae cere kata eS ae a co Ohl, la NS pees ee ee ae a ee ag cht ag i 
THE STRUCTURE OF PLANTS. L 
mbing or scandent. If is Mit around other objects like the Bean 
te TH op, it is voluble or tavin 
16. Branches which arise feo the main stem, below the surface of 
e earth, are called suckers, 
If a branch bends over so as to reach the ground and there takes root, 
a stolon is formed, which sends up branches of its own, and by the di- 
rtion, bec oe an inde- 
strawberry, is ar 
Spines or thorns are Bardot sharp-pointed branches; they may fre- 
Rs ie be found bearing leaves, especially in their young state, which 
shows their true char ucter. Sometimes the thorns are bra nehed, as 
thee of the Honey Locus 
ie: ndril is a weak, cs branch, capable of coiling around o 
support climbing plants (Fig. 95). Some tendttle, owovaey Bebe se 
st the leaf (26). 
17. Besides the aérial form of the stem and branches, there are sev- 
distinguished from them by having nodes, p: in buds, and 
often having rudiments of leaves (11). The Root-stock or Rhizoma is an e 
- m, ad by its hrowing off 
es a good illustration of one form o poorent it often be- 
comes fleshy, as in the Sweet F! = 
1 ere an es stem thickens af the apex,a Tuber ig 
formed, as is the case in = ikenst > Sek ots and Potato. Though = 
popularly Baber ary as a root, the potato is a short thick under-ground a 
stem, having scars which ne Ne oa ter Hid or representatives of leaves, = 
and “eyes” are buds in their axils. A Corm or solid bulb is ; more 
or less globular subterranean stem, as that of the Indian Turn A 
bulb bes a gtd ee; shortened stem, = et Me ith sea a whieh ‘are the 
scales abroad one another and form a Tunicated or Coated bulb. — 
stem is here often reduced to a mere plate, from the ti tee i 
which proceed the roots, and from the upper the sca are 
small bulbs produced above Sa the Spotted Lily of bo paren 
bears these in the axils of the leaves, and in the Wild Leek, or Garlic, 
vey. appear in the pee of Niners os 
. The internal structure of the stem aoe ercocits Se tee ee 
In "aise lants, the woody portion oceupies a ring oo the — 
pith and bark, and in stems of this ind which last from 
increase | 
wa 
