The following description is based on Gilbert
The cap of Amanita manginiana is 50 - 80 mm
wide, chestnut brown, darker in the center, with the margin more pallid,
silky (bearing fine hairs), convex then applanate, fleshy, and has a nonstriate margin.
The gills are adnate and white. Short gills are present.
The stem is 50 - 80 mm high, cylindric,
stuffed, white, becoming orangish-brown. The bulb is fleshy, globose to
ovoid. The ring is membranous, white, superior, skirt-like. The volva is
membranous, limbate, and fulvous-white.
The spores measure 7 - 8 × 6 µm and are
ovoid to subglobose. Gilbert's (1941) drawings of spores sometimes do
not match the information provided in his descriptions. In this case, measuring
the spore drawings show length varying from 9.2 - 10.3 µm and in the case for the only two
spores shown in side view, the width is 7.5 - 7.8 µm.
Basidia probably lacking clamps because of its assigned section.
Originally described from Vietnam.
This species is very poorly known. The material of
the type was preserved in liquid but even in Gilbert's time, the spores
were in very bad condition. At present, the type has been allowed to dry
out. The spore are nothing but amyloid rubble and the specimens are,
unfortunately, almost entirely useless. Yang reports a species similar
to A. manginiana from China under the name A.
manginiana sensu W.F. Chiu. A. manginiana appears to belong with
a group of edible species that at the moment are classed in section Phalloideae.
The reader may also want to see the description of A.
pseudoporphyria Hongo.—R. E. Tulloss
The editors of this site owe a great debt to Dr. Cornelis Bas
whose famous cigar box files of Amanita nomenclatural information
gathered over three or more decades were made available to RET for computerization
and make up the lion's share of the nomenclatural information presented on this site.
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 based on the protolog of the present species, (Gilbert 1940 & 1941), and original research of R. E. Tulloss.
Gilbert (1940): [1/-/-] 10.4 × 8.0 μm, (Q = 1.30). [Note: Data is from measurement of the one spore apparently drawn in lateral view in Gilbert's tab. XXX (fig. 1). Without ranges of length, width, and Q, a sporograph cannot be drawn.—ed.]
from protolog: Unknown. Type collection purchased in market.
from protolog: VIETNAM: THUA THIEN-HUE PROV.—Huế, purchased in market, 1912 Eberhart s.n. (holotype, in herb. Eberhart => PC, implicit, once in liquid now dried and useless—lost to science).
—R. E. Tulloss
Information to support the viewer in reading the content of "technical" tabs
can be found here.
Each spore data set is intended to comprise a set of measurements from a single specimen made by a single observer;
and explanations prepared for this site talk about specimen-observer pairs associated with each data set.
Combining more data into a single data set is non-optimal because it obscures observer differences
(which may be valuable for instructional purposes, for example) and may obscure instances in which
a single collection inadvertently contains a mixture of taxa.