| name |
Amanita pseudobreckonii |
| name status |
nomen provisorum |
| GenBank nos. |
Due to delays in data processing at GenBank, some accession numbers may lead to unreleased (pending) pages.
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|
| 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 derived from the field
notes and photographs of collectors, and a Ms.
description of Siegel and Schwarz (presented in
quotation marks and supplied generously by
the authors), molecular
research from the laboratory of Dr. Jozsef Geml,
Leiden, and other original research of R. E. Tulloss. |
| pileus |
Siegel & Schwarz: 30 – 80 mm wide, pale
straw-yellow with pinkish tan tone, sometimes more
peachy or cool yellow when young, ovoid at
first, becoming convex to planar, viscid to dry;
context creamy white except for yellow
region just below pileipellis;
margin nonappendiculate, finely grooved
(sometimes obscure); universal veil as
relatively thick flocculent-membranous irregular
covering of white patches, detersile in age. |
| lamellae |
Siegel & Schwarz: narrowly attached to free, close to
crowded, white, with edges often finely frosted when
young. |
| stipe |
60 – 150 × 8 – 20 mm [width measured at apex],
white to pale creamy white, narrowing upward, dry,
smooth above partial veil, finely flocculent below;
bulb relatively small; context stuffed,
soft, fibrous, with pith like stuffing in central
cylinder; partial veil membranous, often
not attached to stipe and becoming
upward-flaring ring very low on stipe; breaking up
in age; universal veil as short
collar-like limb encircling top of bulb in young
material or as loose patches on substrate. |
| odor/taste |
Siegel & Schwartz: Odor indistinct.
Taste mild. "Probably toxic." |
macrochemical
tests |
none recorded. |
| basidia |
Siegel & Schwartz: Clamps rare. |
| lamella edge tissue |
RET: sterile. |
| basidiospores |
Siegel & Schwarz: 9.5–12 x 8.5–10 µm,
subglobose, inamyloid; white in deposit. |
| ecology |
Siegel & Schwartz: "Solitary or scattered in small
groups in
duff under conifers, especially Sitka Spruce
[Picea sitchensis]. Very
common on Far North Coast, uncommon elsewhere.
Often fruiting in large flushes in early fall and
spring, with scattered fruitings through winter."
RET: Other associated trees cited with
collections include
Pinus and Abies grandis. |
| material examined |
RET: U.S.A.:
CALIFORNIA—Humboldt Co. - Trinidad
Beach St. Pk., Elk Head Tr., 8.xi.2013 Noah Siegel
1039 (RET 599-4). Sonoma Co. - Salt Point
St. Pk., 17.xii.2011 N. Siegel s.n.
(RET 600-2, nrITS seq'd.; UCSC). |
| discussion |
Siegel & Schwarz: "The [cap] color is a
distinctive but
difficult to describe mix of pale straw
yellow with pinkish
tan or peachy tones. The thick,
flocculent-membranous universal veil remnants and
the tall, slender stipe are helpful in
identification. It has been mistakenly
called A.
breckonii (a supposedly similar species that
differs in having long ellipsoid spores and clamped
basidia)." |
| editors |
RET |
|
Spore data sets and their composite