I 
THE VEGETATION OF THE DISTRICT OF 
s8 
This, however, is mere speculation, but meanwhile the results of 
the analysis of the collection would appear to justify the separation 
of the upper Irawaddy valley between the Arracan Yomahs and the 
Shan Plateau, as a distinct sub-sub-area of distribution,, 
Arracan 
Desert 
Alluvial 
Whole 
iiwauia* 
daung. 
Zone. 
rs 
Belt. 
district. 
Per cent. 
Per cent. 
Per cent. 
P«r esnt. 
Distribution areas. 
Endemic 
to Assam Arracan 
5 
«<« 
0 « 0 
2*28 
Distributed to Ava and Pegu 
5 
18*60 
124 
4*43 
»? 
„ the Shan Hills , . . 
0-25 
3*93 
0'62 
3*43 
99 
„ Tenasserim 
438 
M« 
o*93 
2 43 
n 
„ the Shan Hills and Tenas- 
serim .... 
47 
0 0 • 
• 00 
2 °I 4 
0* 
09 Malaya .... 
7 
• • • 
s°86 
4'QO 
91 
n China 
09 0 
672 
*93 
5*00 
it 
„ China and Malaya 
• • • 
OOO 
1*00 
o*43 
99 
„ Himalaya and Malaya 
1-56 
00 0 
•41 
o'86 
„ Himalaya and China . 
2‘5 
• 00 
•32 
1*30 
»» Himalaya, Malaya and China 
I ’25 
• CO 
• •• 
o*57 
99 
„ Himalaya only . • 
6-56 
oee 
*3 X 
3*i4 
ft 
„ Deccan sub-sufo»area . • 
2*86 
i860 
i*55 
2*86 
»t 
„ Deccan, Indus and Gangetic 
plains 0 
47 
; 0 © 0 
3‘3° 
4*3° 
,, Deccan, Gangetic plains and 
Malaya .... 
4*38 
0 0 0 
2*58 
314 
99 
, throughout India • . 
94 
8-64 
4*66 
7*5° 
99 
„ India and Malaya • . 
1156 
871 
4*44 
8’oq 
9 9 
„ India and Malaya and China 
10*40 
i*6o 
4*66 
7*20 
39 
from India to Australia 
3*44 
871 
5*90 
5*30 
t)> 
to Africa and India 
I3’6o 
776 
4*70 
99 
from Africa to Malaya or 
Australia .... 
6*56 
&g 6 
30*53 
17*56 
it 
throughout the tropics 
2*5 
3*93 
27*00 
13*43 
Totals 
100 
100 
100 
100 
An analysis of the collection from the systematic standpoint 
reveals the following results. The proportion of Monocotyledons to 
Dicotyledons in the three zones and in the whole district is as 
follows 
2° ne9 ° Monocots. Dicoto. 
Arracan-Nwamadaung zone 6 
Desert zone . . 3o 
Alluvial Belt ........ s 3 
Whole district 1 a c 
