Fig. 31. The screw-pine (Pandanus candelabrum], a Monocoty- 

 ledon that has developed a stem and assumed tree-like proportions, 

 but the leaves are still developed in dense terminal clusters. The 

 plants inhabit swamps, and the numerous roots sent down from the 

 stem are for the purpose of giving stability to the plant in the loose 

 mud. (Much reduced. ) 



