Amanita sychnopyramis

The cap of A. sychnopyramis is 20 - 75 mm wide, convex to plane with a depressed center, finally even concave, slightly viscid, with a tuberculate-striate margin. The cap is fuscous fawn or grayish brown, umber or fuscous bay over center, streaked by innate darker fibrils, and paler toward the margin. The flesh is white and soft. The cap is set with pale grayish white, gray or grayish-brownish, small, floccose, pyramidal warts.

The gills are free, crowded, thin, and white.

The stem is 40 - 80 × 5 - 11 mm, with a slightly pointed base, tapering upward, becoming hollow, exannulate, white, grayish-brownish near the base. The flesh is brittle. The upper part of the swollen base is set with pale grayish or brownish white, very small, scurfy particles arranged in several irregular circles.

According to Corner & Bas (1962), the spores measure 6.3 - 8.1 µm wide and are globose to subglobose and inamyloid.  Clamps are not found at bases of basidia.

Described from forest in Singapore, the species has also been reported from Malaya.—R. E. Tulloss

Prof. E. J. H. Corner (1-3) Singapore, illustration from original description (Corner and Bas, 1962) reproduced by courtesy of Persoonia, Leiden, the Netherlands.