Dillenia excelsa (Jack) Gilg in Engl. & Pr., Nat. Pfl. Fam. 3, 6 (1893)
Latin for 'large'.

Synonyms
Capallia multiflora Bl., Capellia pauciflora Zoll. & Mor., Dillenia excelsa var. borneensis Merr., Dillenia excelsa var. pubescens Corn. ex Masamune, Dillenia excelsa var. tomentella Cor. ex Masamune, Dillenia glabra Martelli in Becc., Dillenia magnoliaefolia Martelli in Becc., Dillenia mattanensis Martelli in Becc., Dillenia oblonga Gilg in Engl. & Pr., Dillenia secunda Hunter, Dillenia tomentella Martelli in Becc., Wormia excelsa Jack, Wormia excelsa forma grandifolia Miq., Wormia excelsa var. borneensis Miq., Wormia excelsa var. pubescens Corn., Wormia excelsa var. tomentella Corn., Wormia grandifolia Miq., Wormia oblonga Wall., Wormia pauciflora Koord. & Val., Wormia tomentella Ridl.

Description
Sub-canopy tree up to 25 m tall and 34 cm dbh. Stipules absent. Leaves alternate, simple, penni-veined, margin usually entire. Flowers ca. 55 mm in diameter, yellow, placed in simple or composed racemes. Fruits ca. 28 mm long, red-purplish, dehiscent capsule with arilate seeds.

Ecology
In undisturbed and secondary mixed dipterocarp forests up to 700 m altitude. Mostly on alluvial sites (swamps, riversides, periodically inundated) but also found on hillsides and ridges. On sandy to clayey soils, but also on limestone.

Uses
The timber is used for house building.

Distribution
Thailand, Peninsular Malaysia, Sumatra, Java, Borneo (Sarawak, Brunei, Sabah, West-, Central- and East-Kalimantan), Philippines.

Local names in Borneo
Alang alung, Beringing, Gara, Jamihing, Jelangin, Jengin, Jing, Joching, Kajamihing, Kajuringin, Kandikara, Kanigara, Kegihing, Pampan, Randaman, Ringin, Rongin, Saramohing, Simpoh, Simpor laki, Simporotan, Simpur, Simpur bukit, Simpur laki, Tidahura, Tjumihing, Urip.