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 | ||||||||||||||||||||||||||||||||||||||||
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name | Amanita pacifigemmata |
name status | nomen provisorum |
images | |
photo | Michael Beug - (1-2) Evergreen Parkway, Olympia, Thurston County, U.S.A. (RET 878-1) & [Note: for untrimmed, unedited images see here.—ed.] |
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.