- 173 — 



All the Fanerophytes; 



All the Chamaephytes; 



A few Hemicryptophytes; 



Some Rhizome-Geophytes (but only a few) ; 



A few Therophytes. 



The Mesophytic Aspect includes: 

 Many Hemicryptophytes ; 



Most of the bulbous Geophytes and some Rhizome- 

 Geophytes; 

 Many Therophytes. 



The percentages of early and late-flowering species already 

 given show that by far the greater proportion of the plants 

 of Transcaspia are early flowering. The number of late- 

 flowering species in the list of plants is 123, which is 16 

 per ct. of all the species. The species whose flowering 

 season is not stated, are as a rule taken as early flowering. 



It holds good for most growth-forms that the majority 

 of the species flower early. This also applies to the Thero- 

 phytes, but for one group of these the summer-annuals, the 

 opposite is the case; the same is seen in the Chamaephytes. 



CHAPTER 13 



Descriptions of the Growth-Forms. 



In this chapter an attempt is made to give a description 

 of some of the structural features of Transcaspian desert- 

 plants. Even a brief description of each of the desert-plants 

 of our area would fill a, large volume, hence the following 

 is limited to species known from personal observation and 

 collected by myself supplemented in some cases by other 

 material. In this respect the "Herbarium florae Rossicae" 

 has been of great service. 



The plant-species are arranged according to their "biolo- 



