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
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The following material is derived entirely from the protolog of the present taxon.
from protolog: [-/-/-] 6.3 - 8.1 × 6.3 - 8.1 μm,
(Q = 1.0 - 1.10), hyaline, colorless, thin-walled, inamyloid, globose to subglobose; apiculus proportionately rather large; contents mono- to multiguttulate; color in deposit not recorded.
Singapore: Terrestrial in forest.
from protolog: SINGAPORE: Bukit Timah, 16.viii.1939 E. J. H. corner s.n. (paratype, L), 21.viii.1939 E. J. H. Corner s.n. (holotype, L), 23.iv.1940 E. J. H. Corner s.n. (paratype, L, watercolor drawing only), 7.iv.1941 E. J. H. Corner s.n. (paratype, L, watercolor drawing only).
—R. E. Tulloss
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Corner & Bas
"Forest of Pyramids Amanita"
1. Amanita sychnopyramis
2. Amanita sychnopyramis
3. Amanita sychnopyramis
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Prof. E. J. H. Corner (1-3) Singapore, illustration from original description (Corner and Bas, 1962) reproduced by courtesy of Persoonia, Leiden, the Netherlands.
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