| name |
Amanita lear |
| author |
Tulloss, Kudzma & S. D. Russell |
| name status |
nomen provisorum |
| english name |
"Distressed Caesar" |
| etymology |
named for Shakespeare's tragic, mad king. The
epithet is a noun in apposition and is not declined. |
| GenBank nos. |
Due to delays in data processing at GenBank, some accession numbers may lead to unreleased (pending) pages.
These pages will eventually be made live, so try again later.
|
| 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 based on the photographs
and environmental notes 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. |
| pileus |
90 mm wide, white, broadly concave at maturity, dry;
context white; margin short striate;
universal veil as thin white coating. |
| lamellae |
narrowly adnate, crowded, white, with edge minutely
fimbriate; lamellulae rather common, irregularly
spaced, of diverse lengths, dominantly truncate,
infrequently subtruncate. |
| stipe |
72 × 22 mm, white; context hollow, white,
with central
cylinder approximately one third of stipe diameter;
partial veil not clearly defined in photos;
universal veil as white saccate volva,
flaring, membranous, persistent. |
| odor/taste |
Odor not distinctive. |
macrochemical
tests |
5% KOH on pileus - negative. |
| lamella edge tissue |
sterile. |
| basidiospores |
R. Pastorino: [25/1/1] 11.0 - 14.0 (-14.8) × 7.0
- 8.0 μm, smooth, hyaline colorless, ellipsoid to
elongate to (infrequently) cylindric, (Q = (1.47-)
1.51 - 2.0 (-2.11);
Q' = 1.67; apiculus sublateral;
contents oil drop; white in deposit. |
| ecology |
Under Pinus ponderosa, Arctostaphylos
sp., and Quercus chrysolepis or under young
Q. agrifolia. |
| material examined |
U.S.A.: CALIFORNIA—
Humboldt Co. - E of Willow Creek, St. Rte. 299, rest
stop [40.8898° N/ 123.5815° W, 303 m],
21.xi.2013 Noah Siegel 1092 [mushroomobserver
#157983]
(RET 601-7, nrITS & nrLSU seq'd.).
Monterey Co. - Fort Ord, 25.ii.2019 Ron Pastorino
2-25-19A [musroomobserver
#360369]
(RET 859-10, nrITS & nrLSU seq'd.) |
| discussion |
The habit of this species suggests A.
calyptratoides, but the
present species is entirely white.
This species is genetically distinct from all sequenced
taxa of section Caesareae. It is also
morphologically distinctive.
This speces was formerly known on this site under the
temporary code, "Amanita sp-C22." |
| citations |
—R. E. Tulloss and L. V. Kudzma |
| editors |
RET |
|
Spore data sets and their composite