350 



STRUCTURE AND LIFE HISTORIES 



Fig. 258. — Scmperviviim tectoruniy with stolons. 



Fig. 259. — Chlorophytum elatmn R. Br., showing vegetative propagation 

 by runners. P^, P^, P^, new plants; P, parent plant. From P^ one root, 

 and from P^ two roots hang down. 



