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 Fig. 159. — A Screw-pine and a subtropical estuarine salt-marsh. A, a Screw-pine 

 (Pandamis tectorius) with prop-roots. Such plants are A-ery common along the 

 strand in the eastern tropics and are widely planted for ornamental purposes. 

 ( X -h-) B, a subtropical salt-marsh in the estuary of the Shatt al-Arab, near 

 Fao in the extreme southeast of Iracj bordering on the Persian Gulf, showing, 

 behind, a characteristic grove of planted Date Palms {Phoenix dactylljcia.) 



459 



