The cap of this species is about 53 mm wide, pale grayish brown with notably darker gran-brown to brown in the center and slightly darker gray brown over the striate area, and umbonate. The cap's flesh is off-white except under cap's skin in the umbo where it is gray and elsewhere under the cap's skin paler gray; the fleish is 4 mm thick above the stem. The cap's margin is striate (45% of pileus radius); and volval remnants are absent from the cap.
gills
The gills are free, crowded, off-white in mass, white to pale grayish white in side view, and about 3.5 mm broad. The short gills are truncate, unevenly distributed, of diverse lengths, and plentiful.
stem
The stem is about 151 × 7 mm, off-white, smooth in the upper three-quarters, and below area has pale grayish fibrils forming upward pointing squamules. There is no annulus on the stem. At the stem's base, the volva is sack-like, membranous, white on both inside and outside surfaces, 42 × 12 mm. The volva has a thin inner limb with very uneven free edge; it is unusually long and attached to the outer volval limb at the point of that limb's attachment to to the stem.
spores
Spore from this species measure (9.8-) 10.0 - 11.5 (-12.5) × (8.1-) 8.5 - 10.0 (-10.5) μm and are inamyloid and subglobose to broadly ellipsoid. Status of clamps on the basidia has not been investigated, but they are probably absent.
discussion
The long, thin inner limb of the volva is somewhat reminiscent of the same structure in the Atlantic coastal plain species Amanita longicuneus Tulloss nom. prov., but that spores of that latters species are (so far is is presently known) larger and closer to being spherical—R. E. Tulloss
brief editors
RET
name
Amanita sp-T33
name status
cryptonomen temporarium
GenBank nos.
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accession
locus
voucher
source
intro
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 taken from original research of R. E. Tulloss.
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.