328 ZONES AND REGIONS [Pt. Ill, Sect. I 



the interior of Brazil, and Lygodium, species of which are twiners in rain- 

 forests) and the Marattiaceae (for example Angiopteris evecta, a gigantic 



Fig. 115. Pandanus sechellarum, Balf. f. Seychelles. From a photograph by A. Brauer. 



herbaceous form with a round subaerial stem as large as a man's head, in 

 Eastern Asia) are never the chief members of any formations. 



