The following material is largely based on the original description (Murrill, 1955) and the study of the type by Jenkins (1979).
The cap of A. neoneglecta is 32 - 50 mm wide, convex to plano-convex, white, with a slightly incurved, nonstriate and nonappendiculate margin. Volval remnants may be present as pyramidal warts or patches or as a slight flocculence covering most of the cap.
The gills are adnate to narrowly adnexed or barely free, crowded, and white
The stem is 40 - 60 × 4 - 15 mm, white, narrowing slightly upward, and flaring at the top. The bulb is small, ovoid, and white. The ring is superior, membranous, white, and skirt-like; it is often persistent, but may become ragged. Volval remnants are sometimes present as a friable white limb on the top of the bulb, but are often absent. The flesh is solid and white.
According to Jenkins (1979) study of Murrill''s type, the spores measure 8.6 - 10.2 × 3.9 - 5.5 µm and are amyloid and elongate to cylindric. Presence of clamps not reported, but probably absent.
Amanita neoneglecta was originally described from hardwood-pine forest in Florida.
Although Bas (1969) did not treat the present species as belonging in section Lepidella, it bears certain resemblance to the species of subsection Limbatulae Bas. The characteristics of the volva in the present species are not fully known. If the formation of a limb on the bulb is due to a distinct but thin submembranous outer layer, then this species probably would be placed in subsection Limbatulae. Bas proposed three stirpes within his subsection Limbatulae. In stirps Preissii, no known North American taxa have a spore shape similar to that reported for A. neoneglecta. In stirps Roanokensis, all taxa have spores markedly narrower than does the present species. In stirps Limbatula, there are two taxa that have a persistent ring on the stem: A. parva (Murrill) Murrill and A. praelongispora (Murrill) Murrill. If the present species were to be one of these, it would have clamps at the bases of some basidia. The fact that clamps could not be found at bases of basidia due to poor preservation of the type (Jenkins 1979) limits us from speculating further about classification in section Lepidella. If the volva lacks a submembranous layer on the outer surface and clamps are lacking from the fruiting bodies and the subhymenium is cellular, the present species is properly placed in section Validae. RET would be very grateful for any dried material from Florida or the Gulf Coast that might represent A. neoneglecta.—R. E. Tulloss and L. Possiel
Tulloss in Tulloss et al.
Amanitaceae 1(2): 3.
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 not directly from the protolog of the present taxon is taken from Jenkins' type study (1979).
from protolog: 40 - 45 mm wide, convex-expanded, white; context white, unchanging, 2 mm thick; margin nonstriate, entire; universal veil as "many raised volval patches," more pyramidal over disc, white.
from protolog: adnate, crowded, white, unchanging, 7 mm broad.
from protolog: 40 - 45 × 10 - 15 mm, white, unchanging, smooth, glabrous, narrowing upward; bulb small, ovoid, white; context not described; partial veil superior, skirt-like, persistent, white; universal veil "entirely friable at an early stage."
from type study of Jenkins (1979): [-/-/1] 8.6 - 10.2 × 3.9 - 5.5 μm, (Q = 1.85 - 2.21; Q' = 2.00), hyaline, thin-walled, amyloid, elongate to cylindric, often adaxially flattened; apiculus sublateral, cylindric; contents guttulate;
color in deposit not recorded.
from protolog: Gregarious. On deep humus. Known only from the type locality where it appeared at intervals for some time.
from type study of Jenkins (1979):
U. S. A.: FLORIDA— Alachua Co. - Gainesville,
16.ix.1950 W. A. Murrill F 32887 (holotype, FLAS).
The protolog contained no comparison or suggestion of related taxa.
—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.