THE PLANT ECOLOGY OF THE COAST BELT OP NATAL. 469 



Fig. 2.— Umgababa, May 29th, 1919. Tree veld. Eugenia 

 <5 or data (nniDoni or Watevboom) is shown deformed by the east 

 wind. The fact that it is bent over from near the base shows that this 

 area has been bare and wind-swept for at least as long a period as is 

 represented by the age of the tree, i.e. about fifty years proljably. In 

 front and to the left of the Eugenia young specimens of Hyj)haine 

 crinita (Ilala palm) are shown. To the left of the photograph a 

 patch of scrub with Sapium mannianum dominant around the 

 margins but with Strelitzia augusta, Albizzia fastigiata, 

 Antidesma venosum, Schmidelia erosa, Sapindus oblongi- 

 folius, Bridelia micrantha, Plectronia ventosa and Brachy- 

 laena discolor, all common. This scrub is progressive, as is sho\NTi 

 by the dead or dying specimens of the light-demanding Hyphajne 

 crinita just within its margin which it has overtaken. 



PLATE XXV. 



Fig. 1.— Durban Bay, August, 1911. Mangrove associes. Avi- 

 cennia officinalis dominant. Its breathing roots are seen growing 

 up through clumps of Salicornia sp. and Chenolea diffusa. 



Fig. 2.— Umbilo, May 10th, 1919. To the left Avicennia offi- 

 <?inalis growing in brackish water; to the right Phragmites 

 communis in fresh water but giving way to Hibiscus tiiiaceus, 

 Eugenia cordata and Ficus natalensis, i. e. to hygrophilous 

 bush in the background. 



PLATE XXVI. 



Fig. 1.— Stella Bush near Durban, May 10th, 1919. Coast Forest. 

 Protorhus longifolia, Trema bracteolata, Vangueria lasi- 

 antha and a variety of other species. 



Fig. 2. — The same as Fig. 1 but j)hotographed inside. This photo- 

 graph, using the same plates, aperture, etc., was given 400 times the 

 exposure of the other. Psychotria capensis is abundant in the 

 dense shade. The thick woody liane is Dalbergia armata and the 

 more delicate herbaceoiis climber Flagellaria guineensis. 



