| name |
Amanita pacifigemmata |
| author |
Tulloss |
| name status |
nomen provisorum |
| GenBank nos. |
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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 field notes
provided by Debbie Viess, DNA extraction and
sequencing provided by Dr. L. V. Kudzma, and
other original research of R. E. Tulloss.
On this site, this probable taxon was previously treated under the
temporary code "Amanita sp-C21." |
| pileus |
75 - 94 mm wide, "coppery orange" with margin somewhat
browner than disc, unchanging when cut or bruised,
viscid at first; context cream,
?? mm thick over stipe,
thinning evenly toward margin until membranous for
last ?? mm of pileus
radius; margin nonappendiculate, striate
(0.05 - 0.1R); universal veil as smooth buffy
gray patches of varying size, detersile,
submembranous, unevenly distributed. |
| lamellae |
narrowly adnate without decurrent line on upper stipe, crowded, pale yellow in mass, cream in side view, unchanging when cut or bruised, 5 - 8 mm broad; lamellulae ??, of at least two lengths, uncommon. |
| stipe |
90 - 130 × 10 - 20 mm, cream, cylindric or narrowing
upward, sometimes flaring at apex,
??; bulb 20 - 35 ×
12 - 26 mm, subglobose to irregularly radicating;
context cream, unchanging when cut or bruised,
stuffed with cottony pith, with central cylinder 3 - 5
mm wide; partial veil cream, prominent,
submembranous, sometimes fragmenting, sometimes
separating from stem at point of attachment, striate
above, often with free edge decorated with pendent
rectangular buffy gray patches of universal veil;
universal veil sometimes as buffy gray
patches distributed over stipe below partial veil,
sometimes absent, with limbus internus sometimes
present as 2 - 3 mm thick cream limb encircling
upper bulb at stipe base, sometimes absent. |
| odor/taste |
neither reported. |
macrochemical
tests |
none reported. |
| basidia |
?? × ?? μm, 1-, 2-, or 4-sterigmate, with sterigmata up to 8.5 × 2.0 on 1- and 2-sterigmate basidia, with basidia arising from ??; clamps at least locally common. |
| lamella edge tissue |
sterile. |
| basidiospores |
RET: [20/1/1] (9.5-) 10.0 - 13.0 (-17.2) × 7.4 - 8.5 (-9.8) μm, (L = 11.5 μm; W = 7.9 μm; Q = (1.25-) 1.28 - 1.60 (-1.95); Q = 1.46), ??, smooth, thin-walled, inamyloid, broadly ellipsoid to ellipsoid, infrequently elongate, often adaxially flattened, occasionally malformed (flask-shaped, constricted, giant, or otherwise distorted); apiculus sublateral, cylindric; contents ??; ?? in deposit. |
| ecology |
California, U.S.A.: With Pseudotsuga menziesii. |
| material examined |
CANADA: BRITISH COLUMBIA—Powell River recreation complex [49.8522° N/ 124.5246° W, 100 m], 25.ix.2018 Jason Leane ATM-2018-035 [mushroomobserver #352511] (RET 863-7).
U.S.A.: CALIFORNIA—Marin Co. - Point Reyes Nat. Seashore, Coastal Tr., 4.vii.2018 Debbie Klein s.n. [mushroomobserver #321967] (herb. A. Rockefeller, nrITS seq'd.); Point Reyes Nat. Seashore, Bear 5 Tr., 20.i.2014 Richard Lyons s.n. (RET 585-6, nrITS seq'd.); Point Reyes Nat. Seashore, unkn. loc., 20.i.2007 mycoblitz participant s.n. (RET 421-7, nrITS & nrLSU seq'd.), s.n. (RET 584-5, nrITS seq'd.), s.n. (RET 584-10, nrITS seq'd.).
WASHINGTON—Pierce Co. -Eatonville, Pack For., 30.viii.2019 Drew T. Henderson s.n. [mushroom observer #380221] (RET 877-10, nrITS-LSU seq'd.).
Thurston Co. - Olympia, Evergreen Pkwy., 1.ix.2019 D. T. Henderson s.n.[mushroom observer #380629] (RET 878-1, nrITS-LSU seq'd.). |
| discussion |
The material examined to date was collected in dry
weather at temperatures described as "very
cold." These conditions as well as the
immaturity of the material may have contributed to the
malformation of spores and the presence of a
significant number of basidia with less than four
sterigmata.
The nrITS sequences obtained from the three
collections from Marin County communicated by Debbie
Viess (RET 584-5, 584-10, and 585-6) all have genetic
distances in the range of 0.1 to 0.5% from the
following sequences from GenBank (derived from
material from Marin County or from one or more sites
in British Columbia): GQ250406, HM240517, HQ604823,
HQ604824, JF899545. The species determinations
on the GenBank sequence pages indicate that the
authors placed the material near A. gemmata
or A. pantherina. The presence of
clamps on the bases of basidia indicate that the
material is not morphologically close to either of
those two taxa. |
| citations |
—R. E. Tulloss, L. V. Kudzma, & S. D. Russell |
| editors |
RET |
|
Spore data sets and their composite