40 SOUTH AFRICAN BOTANY 
the ground, and strikes the soil at different intervals, 
producing leaves and roots as, e.g., the strawberry. 
i = TA ( 
Fic, 22,—Runner of Strawberry. (From ‘‘Thomé’s Botany ”’.) 
(b) The stolon (fig. 23), a branch given off above the 
ground which strikes into the earth, producing a new 
plant. 
Fic. 23.—Stolon of Bramble. 
“c) The sucker (fig. 24), a branch given off below the 
ground, turning up at intervals and producing a new 
plant. 
-The chief forms of subterranean stems are :— 
(a) The rhizome (fig. 25), a thickened stem creeping 
