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 information and images
from the collector, molecular research of Dr. L. V. Kudzma
and other original research of R. E. Tulloss.
48 mm± wide, yellow tan over disc, with disc
encircled by irregular and somewhat mottled
brown zone, yellow tan outside darker zone, campanulate
at first, not having pronounced umbo, shiny when moist;
context 6± mm thick over stipe, white,
when cut or bruised; margin nonappendiculate,
striate (0.6±R), universal veil absent.
free without decurrent tooth on stipe, white in mass, white
in side view, unchanging when cut or bruised, 7± mm broad;
195± × 13± mm, white, possibly
staining red-brown to tan from handling (per photo),
white, unchanging when cut or bruised, stuffed with
cottony material; exannulate; universal veil
?? × 23± mm.
Odor lacking. Taste not discernible.
lamella edge tissue
Solitary. Missouri: In dark loam over rock and red clay
in mixed harwood-coniferous forest dominated by
Quercus and Carya (commonly
and C. glabra) with sparsely scattered
North Carolina: Mixed hardwoods (Quercus,
Liriodendron tulipifera, Carya,
Acer, Fagus grandifolia, and
Liquidambar styraciflua) with
Despite the distinct pileus coloration and form of this
apparent species. It shares its nrLSU sequence with the
strikingly morphologically distinct
Of course, it is possible that the collections
as A. homolae are an albino variant of the
they represent. However, we have seen previous
examples of a shared or very nearly identical nrLSU
sequences in the A. crassiputamen "group". So
the present case may be another example of nrLSU not
being a reliable "barcode" in the genus
—R. E. Tulloss
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Tulloss et al.
1. Amanita sp-MO04
2. Amanita sp-MO04
John McDonough - Poplar Bluff, Butler County, Missouri,
USA. (RET 696-9) [Note: Original images
are available here.]
Spore data for collections provisionally identified as: Amanita sp-MO04 Tulloss et al.
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.