This text is derived from the original
description of Amanita pseudoprinceps.
The fruiting bodies of Amanita pseudoprinceps
are medium-sized to large.
The cap is 70 – 120 mm wide, plano-convex
to planar, usually yellow-brown to
brown over the entire cap, occasionally
dark brown to brown in the center,
gradually changing towards the margin
to cream to white. The cap’s margin
is radially grooved for 20% to 30% of the cap's
radius. There is no material
hanging from the cap's edge.
The flesh is white.
The gills are free, crowded, and white to
cream. The short gills are truncate and plentiful.
The stem is 100 – 150 × 10 – 15 mm,
nearly cylindric or narrowing upwards;
its surface is white to dirty white,
covered with dirty white to brownish fibrils;
the stem lacks a basal bulb. At the
stem's base, the volva is saccate,
40 – 60 × 30 – 40 mm, membranous, outer
surface is white to dirty white,
inner surface is brownish. The ring
is white to cream.
The odor and taste were not recorded for the present species.
The spores measure 10.0 – 12.0 × 8.5 – 10.5 µm and
are subglobose to broadly ellipsoid and inamyloid.
Clamps are common at bases of basidia.
Amanita pseudoprinceps is currently known
to occur only in
China, Nepal and Thailand.
Amanita pseudoprinceps can be confused
Corner & Bas.
However, the latter differs from the
former in its relatively larger
fruiting body with a
cap ca. 10 – 20 cm in diam.,
and a white saccate volva with
its outer surface cracking and peeling
into thin, brownish patches.—Yang-Yang Cui
and Rachel Warner
Yang-Yang Cui, Qing Cai & Zhu L. Yang.
Fungal Diversity 91(1): 59, figs. 3(j), 11.
The following text may make multiple use of each data field.
The field may contain magenta text presenting data from a type study
and/or revision of other original material cited in the protolog of the present taxon.
Macroscopic descriptions in magenta are a combination of data from the protolog and
additional observations made on the exiccata during revision of the cited original
The same field may also contain black text, which is data from a revision of the present
taxon (including non-type material and/or material not cited in the protolog).
Paragraphs of black text will be labeled if further subdivision of
this text is appropriate.
Olive text indicates a specimen that has not been
thoroughly examined (for example, for microscopic details) and marks other places in the text
where data is missing or uncertain.
The following material is derived directly from the
protolog of the present taxon and associated documen-
tation such as sequences deposited in GenBank.