Giam: heavy hardwood, e.g. ''Hopea ferrea'' Lanessan, ''H. forbesii'' (Brandis) v. Slooten, ''H. helferi'' (Dyer) Brandis.
In Indonesia the wood of several species of ''Hopea'' is traded as "balau" because it closely resembles the wood of the heavy species of ''Shorea'' . In Indonesia the name "giam" is used for the wood of ''Cotylelobium'' spp. The wood of ''H. ferrea'' is sometimes traded separately and called "malut".
== Vernacular names ==
*Zabala, N.Q., 1986. Vegetative propagation of some dipterocarp species. Philippine Lumberman 32(7): 13-16.
== Selection of species ==
<div style="column-count:3;-moz-column-count:3;-webkit-column-count:3">
*[[Hopea andersonii (PROSEA)|''Hopea andersonii'']]
*[[Hopea basilanica (PROSEA)|''Hopea basilanica'']]
*[[Hopea cagayanensis (PROSEA)|''Hopea cagayanensis'']]
*[[Hopea celebica (PROSEA)|''Hopea celebica'']]
*[[Hopea coriacea (PROSEA)|''Hopea coriacea'']]
*[[Hopea depressinerva (PROSEA)|''Hopea depressinerva'']]
*[[Hopea ferrea (PROSEA)|''Hopea ferrea'']]
*[[Hopea forbesii (PROSEA)|''Hopea forbesii'']]
*[[Hopea glabrifolia (PROSEA)|''Hopea glabrifolia'']]
*[[Hopea gregaria (PROSEA)|''Hopea gregaria'']]
*[[Hopea helferi (PROSEA)|''Hopea helferi'']]
*[[Hopea iriana (PROSEA)|''Hopea iriana'']]
*[[Hopea malibato (PROSEA)|''Hopea malibato'']]
*[[Hopea nutans (PROSEA)|''Hopea nutans'']]
*[[Hopea pentanervia (PROSEA)|''Hopea pentanervia'']]
*[[Hopea plagata (PROSEA)|''Hopea plagata'']]
*[[Hopea semicuneata (PROSEA)|''Hopea semicuneata'']]
</div>
== Authors ==
*K.M. Kochummen (general part, selection of species),
*W.C. Wong (properties),
*S. Sudo (wood anatomy),
*F.T. Frietema (selection of species)
[[Category:Timbers (PROSEA)]]
[[Category:PROSEA]]