A tree; leafy branchlets terete, softly pubescent when young, at length becoming glabrous or nearly so. Leaves rhomboid-elliptic or ovate-rhomboid, gradually and obtusely acuminate, shortly cuneate at the base, 2 1/2–4 1/2 in. long, 1 1/4–2 1/2 in. broad, entire, coriaceous, strongly reticulate and slightly shining on both surfaces, glabrous; midrib slightly more prominent below than above, gradually tapered to the apex; lateral nerves 9–12 on each side, looped near the margin, the loops forming an irregular semicircle, like the veins prominent on both surfaces; petiole 1–2 in. long, very narrowly grooved on the upper side, softly pubescent when young, soon becoming quite glabrous; stipules very caducous, linear-lanceolate, acute, about 1/2 in. long, softly pubescent or puberulous outside. Receptacles axillary, in pairs, sessile, globose, shortly mammillate at the apex, about 4 lin. in diam., at first finely whitish-pubescent, at length glabrous, often brown-spotted when dry. Basal bracts broadly-ovate, rounded at the apex, nearly 1/2 lin. long, slightly membranous, glabrous, brown when dry. Ostiolar bracts spreading horizontally across the ostiole, subreniform, emarginate, membranous, glabrous, the lower oblong, obtuse, 1/2 lin. long. Male flowers few, near the ostiolar bracts; perianth-segments elliptic-obovate, subacute, membranous; stamen solitary; filament short and thick; anther small, with distinct cells. Gall flowers numerous, pedicellate; perianth-segments 3, lanceolate, subacute, 1/3 lin. long, membranous; ovary stipitate, obovoid, minutely pitted, with a lateral style and large stigma. Female flowers sessile; perianth as in the gall flowers but shorter; ovary triquetrous, shining; style lateral, slender, about half the length of the ovary; stigma small.
