Gonystylus nobilis Airy Shaw

Tree to 24 m; branches robust, almost 1 cm ø. Leaves large, elliptic to sub-oblong, 23-34 by 9-12 cm, base broadly cuneate to rounded, apex narrowed to somewhat rounded, very shortly, broadly and not abruptly acuminate (acumen acute, 1 cm), firmly coriaceous, quite glabrous, dull and grey-green above when dry, with a very narrow purplish margin, smooth beneath, not shining, distinctly pale when dry; midrib robust, subcylindrically prominent beneath, deeply and narrowly impressed above, primary nerves c. 20 pairs, lax, conspicuously anastomosing near the margin, obscurely prominulous above, sharply prominent beneath; petiole very robust, 3-4 cm by 4-5 mm, terete, sparsely adpressed-pubescent. Inflorescence 11 cm, simple, rachis terete, 3-4 mm ø, adpressed-pubescent, flower-nodules very short. Fruit transversely subellipsoid, 6.5 by 5.5 cm, conspicuously obtusely 4-ridged, strongly rugulose.

Primary lowland Dipterocarp forest, altitude and soil unknown.