WRIGHT : THE GENUS DIOSPYBOS 
forests rarely exceeds a total height of 30 feet and a diameter 
of 5 inches. In the Hiniduma district, however, particularly 
along the north-west side at an elevation of 1,000 feet, 
many specimens of D. Thwaitesii attain a total height of 
15*2 to 18*3 metres (50 to 60 feet) and a breast-height circum¬ 
ference of 50 to 76 cm. (20 to 30 inches). 
D. insignia, characterized by its straight leader unbranched 
to a height of 6*1 metres (20 feet), is likewise of compara¬ 
tively small dimensions. The breast-height circumference 
rarely exceeds 64 cm. (25 inches), and many plants having a 
main stem less than 12-7 cm. (5 inches) diameter bear a 
considerable amount of fruit. 
The above-mentioned species may be regarded as those in 
the wet zone, which are characteristically of small dimensions. 
Commencing with the class possessing species of relatively 
large dimensions, we may for the sake of a continuous series 
first consider the smaller members, D. Moonii and D. 
oppositifolia, which thrive best along the banks of streams or 
along damp precipitous slopes, and usually attain a total 
height of 12*2 to 18-3 metres (40 to 60 feet) and a breast- 
height circumference of 610 to 915 mm. (2 to 5 feet). 
Nevertheless, specimens of D. Moonii in the Hewessa district 
and D. oppositifolia on the western side of Hinidunkanda 
occur as clumps of thin leaders matted together at the base 
by a common system of roots. 
Next to these we may place D. qu®sita,D. Toposia, and D. 
Gmlneri, since they often attain a total height of 30-5 metres 
100 feet),andmanye TO eeda breast-heightgirth of 1 - 8 metres 
(6 feet). 
The remaining wet zone epeoiee, D. crmnenata and D. 
sylvatica, may attain dimensions which rival the colossal 
species of the dry zone. The largest specimen of B. sylvatica 
in Ceylon is probably at Ambalaw 
* Gampola, 
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