BRIEF DESCRIPTION: The description of this species is based on that of Bas (1969).

The cap of Amanita borneensis is about 60 - 130 mm wide, convex to plano-convex, rather fleshy, unequally pinkish brown, with a nonsulcate, strongly projecting, fuzzy margin. The cap is abundant with flat, rather small, brown, crust-like patches of volva.

The gills are crowded, free to narrowly adnate, rather narrow, and pink. The short gills are truncate to obliquely truncate to attenuate.

The stem is 150 - 200 x 15 - 25 mm, attenuate upward, solid, concolorous with cap or slightly paler, exannulate, with brown, rahter coarse wart-like remnants of volva near the base and on the upper part of the bulb.

The spores measure 8 - 10 x 7.5 - 10 µm and are amyloid and globose to subglobose. Clamps are absent at bases of basidia.

Amanita borneensis was described from Indonesia without mention of possible symbionts.

Bas placed this species in his stirps Eriophora (see A. eriophora (Berk.) E.-J. Gilbert). -- R. E. Tulloss