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ZONES AND REGIONS [Pt. Ill, Sect. I 



tions termed by him, ' high-grass-steppe.' ' bush-grass-steppe,' and ' tree- 

 grass-steppe ' : — 



The high-grass-steppe of Engler, which is a steppe according to our terminology 



Fig. 198. Arborescent Euphorbia in the savannah. German East Africa. From a photograph. 



also, consists chiefly of Andropogoneae with tufts of haulms 1-2 meters high ; there 

 are also, however, numerous other forms of grass, usually lower in stature, Paniceae 



