flame tree /fleɪm tɹiː/noun 13forms 1 noun13 •Any tree or shrub with yellow or bright red flowers from several species.The people stared in awe at the magnificently colored flame tree. •Rhododendron arboreum (tree rhododendron), of southern Asia •Brachychiton acerifolius syn. Sterculia acerifolia. •Delonix regia (royal poinciana), native to Madagascar •Alloxylon flammeum (Queensland tree waratah, red silky oak) •Butea monosperma (flame of the forest), of southern Asia •Embothrium coccineum (Chilean flame tree, Chilean firebush) •Erythrina abyssinica, of eastern and southern Africa •Erythrina spp. (coral trees), of most tropical and subtropical regions •Koelreuteria bipinnata (Chinese flame tree) •Nuytsia floribunda (Australian Christmas tree) •Peltophorum spp. (African flame tree) •Spathodea campanulata (African tulip tree, African flame tree) formsflame trees