STEWART: FLORA OF LADAK, WESTERN TIBET 589 
Cnicus arvensis 
Tragopogon pratense 
Taraxacum officinale 
Sonchus oleraceus 
Lactuca Scariola 
Veronica agrestis 
Galium verum 
Gifola germanica 
Tussilago Farfara 
Arctium Lappa 
Carduus nutans 
GENERA BEST REPRESENTED IN WESTERN TIBET 
When we come to look at the commonest genera in Ladak, we 
find that only two are not represented in the eastern United States. 
These are members of the Compositae, Allardia and Suassurea. 
In addition, we have no native species of Dianthus or Nepeta. 
It is interesting to note that the genera such as Tanacetum, 
Artemisia, Astragalus and Oxytropis. which are more numerous 
in Ladak than in the eastern United States, are genera which are 
common in the Russian parts of Central Asia. 
Stipa* Chenopodium  Saxifraga Lonicera 
Poa Stellaria Potentilla Galium 
Bromus* Arenaria Astragalus* Campanula 
Festuca Dianthus*t Oxytropis* Erigeron 
Scirpus Ranunculus —_ Epilobium Inula* 
Kobresia* Thalictrum Primula* Tanacetum* 
Carex Corydalis* Androsace* _— Alllardia*t 
Juncus Sisymbrium* Gentiana* Artemisia* 
Allium* Draba* Nepeta*t Senecio 
Populus Geranium* Veronica Saussurea*t 
Salix Sedum* Pedicularis* Lactuca 
Polygonum 
* More species in western Tibet than in the eastern United States. 
T No native species in the eastern United States. 
