SEASONALDIMORPHISM OF CHAMAEPHYTES 



ng/g.h. 



217 



XI XII 



III IV 



VI VII VIII IX 



Fig. 6. Annual march of transpiration rates in mg. per gram fresh weight per hour of 



desert plants. 

 K.rsx.- Artemisia inonosperma H..a..-Haloxylon articulatum 



K.hz.- Artemisia herba alba N.m.-Noea mucronata 



A.a..-Aiiabasis artiadata Z.d.-Zygophyllum dutjiosum 



of the values in spring, are calculated (Table 3), it is evident that there 

 is no clear-cut difference between the desert and Mediterranean plants. 

 Apart from Zygophyllntn dumosiim which is a leaf succulent the values 

 are higher than 50% and for most plants range from 60 to 75%. 



Table 3 

 Relative seasonal reduction in the transpiration of desert and Mediterranean plants 



Mediterranean plants 



Potcriurn spinosum 62 



Cistus sali'ifolius 76 



Teucrium polium 50 



Thymus capitatus 72 



Desert sand dune plant 



Artemisia nionosperma 55 



Desert plants 



Artemisia herba alba 73 



Zygophyllum dumosum 86 



Noea mucronata 78 



Anabasis articulata 68 



Haloxylon articulatum 27 



