350 



STRUCTURE AND LIFE HISTORIES 



FIG. 258. Sempervimim tectorum, with stolons. 



FIG. 259. Chlorophytum elatum R. Br., showing vegetative propagation 

 by runners. P 1 , P 2 , P 3 , new plants; P, parent plant. From P 2 one root, 

 and from P 1 two roots hang down. 



