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Botanical Name
| Hopea helferi (Dyer) Brandis |
| Genus | Hopea |
| Family | Dipterocarpaceae |
| Distribution | This is a tree of Cambodia, Burma, Thailand and the Andaman Islands which occurs in the northwest of the Malay Peninsula. It is quite common on the deeper soils on the Langkawi Islands but it has been severely cut from the most accessible localities. On the mainland, it occurs throughout Kedah, in Perlis, and at Sumpitan and Gerik in Upper Perak. It is now critically endangered in the peninsula, and throughout much of its range.
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| Bole Characteristics | A large, scaly-barked Hopea sometimes exceeding 4 m girth; buttresses sometimes large and coarse; bole rather short for its girth, smooth in portions, but mainly shaggily scaly (like a Dipterocarpus), freshly exposed bark brick red in color with occaional exudations of pale amber dammer; crown wied-spreading with a few large main limbs.
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| Herbarium Characteristics | Oblong, usually slightly unequal, about 18 × 7 cm but very variable, venation scalariform, about 15-nerved, glabrous; drying yellow-brown or red-brown above and more or less silvery white beneath; petiole short, about 1 cm long.
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