^lANfeAL TOimi IN THE LAKHlMPUR DISTRICT, ASSAM. 77 
Portulacese. 
Portulaca oleracea^ Z., common on the sands of river banks. 
Hypericine%. 
Hypericum faponicum, Thumb, a common mountain weed, rare 
in the plains. 
Guttiferds, 
Various species of Garcinia and Mesua ferrea^ Z., one of the 
characteristic large trees of Upper Assam yielding a most valuable 
wood difficult to work on account of its hardness. 
Ternstramiacese, 
Saurauja Roxourghu^ Wall., a common small tree ; Sc him a 
iVallichiit Choisy, yields good timber, which is, however, liable to 
warpi Camellia theiferay Griff,, indigenous in the higher lands of 
Assam and Cachar. Tea cultivation is a large and important industry 
which is increasing in extent every year, 
Dipterocarpe^, 
Dipterocarpus pilosus, Roxb., and Shorea assamica. Dyer, both 
lofty trees yielding good timber, 
Malvaceae. 
Malta verticillata^ Z,; various species of Sida common to all 
the hotter parts of India; Urena lohata, L^; Cotton {Gossypium 
h^rhaceum^ Z.), of very poor quality, is grown both in the lower 
hills and plains, Kydia calyHna^ Roxb., grows at Makum ; Bombax 
malabaricum^ DC., a large soft-wooded tree is common throughout 
the Assam Valley, 
Slerculzacese, 
StercuUa urenSf Roxb. — A strong coarse fibre is obtained from 
tbe bark and large quantities of a clear gum exude froriKcut surfaces. 
StercuUa villosa^ Roxb.; Sterculia Roxburghii^ Wall, are two other 
species of the genus, Pterospermum acerifolium^ Willd., is a large 
tree. Abroma augusta^ Z., is a small bush yielding good fibre. 
Tiliaceae. 
Grewia exceha^ Vahl,, and other species. Triumfetta pHasa, 
Roth. 
Echinocarpus sterculiaceus^ Bth., common at Sadiya 5 several 
species of Elaeocarpus. 
C 
