188 FLORA INDICA. 



of Sikkim, except that Pinus excelsa is common, and the 

 larch is not found west of the Kosi. 



In the present state of our knowledge, it is not safe to in- 

 stitute a comparison between the alpine flora of Nipal and 

 that of Sikkim. Wallich's collections show us that the spe- 

 cies are on the whole the same. There is evidently a very 



bution of plants. 



tly owing, it 

 summer drou 

 tgulate the dis 

 will, we trust 



results 



pleted, but with our present imperfect knowledge of species 

 the subject cannot be approached. The occurrence of Sibe- 

 rian types in small numbers among Wallich's alpine plants 

 shows that the climate to the North becomes at last arid, 

 exactly as elsewhere in the Himalaya. 



Though unable to indicate with any approach to precision 

 the number of Nipalese genera and species that are common 

 to the Eastern and Western Himalaya respectively ♦ we have 



instances of H 



Nipal. Of these the majority of the 



estern 

 Europ 



Caltlm palustris. Rosa moschata. 



Delphinium vestitum. Ulmus campestris 



Crataegus Pyraeantha. 



Others are more peculiarly Himalayan : 



Q 



Martiana. Potentilla atro-sanguinea 



ata. „ Nipalensis. 



Stranvaesia glaucescens. Spiraea Kamtschatica. 



Rosa Lyellii. 



Of these the Stranvasia, though not found further eastward 



in 



m (crops may be the same as the Khasian species. The f>pir<ea 

 Kciiatschatica is a native of Eastern Siberia. 



The number of Eastern Himalavan and Khasian forms that 



