CANNON 



PLATE 30 



IMUMMR 



&:■■ .■"-■■ 







S& 





v k* 



Fig. 68. Flood-plain of the Oued Hamman es Salahin, Biskra. Halophytes of various 



species occupy the foreground. 



--'---- 



'V'^ ;/ #^:I ** -' -"^ 



Fig. 69. Habitat of Phelypaea violacea shown in figure 70 



