Keys to Bornean plant families and genera
There are two excellent plant identification keys available on the internet which you can use to key out your plant specimen to family and/or genus level. The first is a key to all Malesian plant families, which is a downloadable interactive key to all plant families of the Malesian region (Southern Thailand to New Guinea). The second is a key to all Tree and shrub genera of Borneo. Have a go at them!

Note
I follow the latest APG family classification, which might differ from the families given in the above sites. To check the current APG family name of your genus check the following link: http://www.phylodiversity.net/phylomatic/kewlookup.html