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
The following material is based on the photographs of
the collector, molecular work for extraction of DNA
and derivation of sequences by L. V. Kudzma, and other
original research of R. E. Tulloss.
[Note: The nrLSU sequence for RET 075-3 has been
temporarily from the "GenBanks nos." data field,
90+ mm wide, yellow-tan in outer half of
radius, dark brown
over disc, fading progressively toward lighter zone,
convex, with pronounced umbo, subvirgate to virgate;
context white; margin striate
nonappendiculate; universal veil absent.
free to receding, close, white; lamellulae of
diverse lengths, often truncate.
240 ± × 15±
mm, with 150 mm of lower stipe inserted in
substrate, with base color white, undecorated below
substrate surface, with yellow-tan "snakeskin" or
"flame" pattern above substrate; context
white; exannulate; universal veil as
saccate volva, white, membranous.
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.