236 



GEOGRAPHICAL DISTEIB [JTIOX 



The subjoined table shows the distribution of the species of Burma, Yunnan, and 





Siarn : 



Table VI. — Table of distribution for Burma {including Siam and W. Yunnan). 



Name of Species. 



Endemic. 



To Assam. 



To Tenasserim. 



• • • 



Gr. strobilinum (2 vars.) 



Gr. Wallichii ... 



G. nutans 

 Gr. parviflorum 



Gr. crinitum 

 Gr. Hemsleyanum 

 Gr. lucidum (1 var.) 



• • 



• • • 



• « • 



var.) 



3 



• • 



• • • 



• • • 



• • • 



var.) 



• • • 



• • • 



* • • 



• • • 



• • • 



• • • 



• • • 



1 



> 



I 



i 



4 



J 



* • • 



1 



1 



• • • 



V 



3 



1 



• • • 



• • • 



Totals of artificial species 

 Percentages of ditto 



* • • 



• • * 



1- 



« • t 



1 



2 



2 



• • # 



1 



4 



1 

 4 



• • • 



• • 





32-2% 



3| 



• • • 



• • • 



1 

 2 





• • • 



• • 



1 



I 2 



J 



} * 



• • • 



* • t 



G7-7 



Totals from probable natural species 

 Percentages from dittcr 



• • • 



• • • 



• • t 



li 



4G-8 / 



1 -A 

 x i 



— , 



53-r/ 



i 



3 



- 



12-5°/ 



The degree of isolation indicated by the endemic percenta 



>e of the district is 

 derable, and is markedly increased when approximately natural units are employed 



At the same time the use of this method decreases instead of 



in calculating it. 



the percentages marking connection with A 



of these being districts that are phytogeographically distinct 



thus indicating the possibility 



species e: 



therefore from the 

 separate districts. 



tending to Assam still outbal 



the 



end 



But the percentage of 

 percentage ; we cannot 



dence of the Burmese species alone propose to 



recog 



the 



m as 



The use of approximately natural units brings out 



on 



th 



e 



the 



r 



hand a rather greater degree of connection between Burma and Tenasserim 



but not 



itself sufficient to justify the annexation of the two dist 

 In the Central Himalaya (Nepal) only one species (G. ovatum) has been found 



as 



this also occurs in Sikkim, the Central Himalaya must be united with the Eastern 

 Himalaya. In the Eastern Himalaya besides G. ovatum two other forms (G. parviflorum 



farinosa and G. lucidum var. canescens) 



but as all th 



extend eastward 



Brahmaputra and occur in the Assam range of hills, the Himalay 



districts must 



far as this 



g 



concerned, be 



ed to Assam 



In Assam itself, limitinor the term to the mountain ranges that run 



o 



from 



orth-east 



to south-west between the Brahmaputra 



These include all the species that 



found 



d Upp 



Burma, fou 



forms have been 



species that occur in Burma; six of them are endemic 

 of this range so far as forms of Gomphostemma 



the Himalaya, and all but two of the 



are 



As indicating the central positio 



d, it may be noticed of two 



species ( G. parviflorum and G. lucidum) that two very distinct varieties of each occur in the 

 district, these varieties being severally distributed ; G. parviflorum var. farinosa occur* 

 in the Eastern Himalaya and in the Khasia hills, but does not extend to Burma. 



G. parvifl 



both 

 while 



typ 



extends from the Khasia hills to Manipur 



Lushai, Chitta 



