name | Amanita castellae | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
author | Tulloss, Kudzma & S. D. Russell | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
name status | nomen provisorum | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
english name | "Castella Ringless Amanita" | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
etymology | Latin genitive of the town name "Castella" - "of Castella" or "belonging to Castella." | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GenBank nos. |
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intro |
The following text may make multiple use of each data field. The field may contain magenta text presenting data from a type study and/or revision of other original material cited in the protolog of the present taxon. Macroscopic descriptions in magenta are a combination of data from the protolog and additional observations made on the exiccata during revision of the cited original material. The same field may also contain black text, which is data from a revision of the present taxon (including non-type material and/or material not cited in the protolog). Paragraphs of black text will be labeled if further subdivision of this text is appropriate. 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 molecular studies of Dr. Linas Kudzma and other original research of RET. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
pileus | yellowish tan at first then orangish-tan, in both cases with darker brown band over inner part of marginal striations, ??; context ??: margin striate (0.2 - 0.25R), nonappendiculate; ??; universal veil at least sometimes with white membranous volval fragments concentrated over disc. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
odor/taste | Neither recorded. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
macrochemical tests |
None recorded. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
basidia | 1-, 2-, and 4- sterigmate in immature material; clamps not observed. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
lamella edge tissue | sterile. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
basidiospores | [8/1/1] 11.5 - 14.0 (-15.1) × 10.3 - 12.7 (-13.9) μm, (L = 12.7 μm; L' = 12.7 μm; W = 11.6 μm; W' = 11.6 μm; Q = (1.03-) 1.09 - 1.14; Q = 1.09; Q' = 1.09), hyaline, colorless, smooth, thin-walled, inamyloid, subglobose (infrequently globose), at least somewhat flattened adaxially, with giant spores present in immature material; apiculus sublateral, cylindric to truncate-conic, proprotionately large; contents ??; ?? in deposit. [Note: the single specimen reviewed is immature with very few sterigmate basidia. The largest recorded spores are likely to have come from basidia bearing less than four spores.—ed.] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ecology | Arizona: At 3186 m elev. In dark soil (staining the stem base of the exsiccatum), with Pseudotsuga menziesii. California: Solitary. At 670 m elev. Along road in forest dominated by Pseudotsuga menziesii. Washington: With Pseudotsuga menziesii. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
material examined | U.S.A.: ARIZONA—Graham Co. - Mt. Graham, near observatory [32.7018° N/ 109.8900 W, 3186 m], 8.ix.1986 Jack S. States AEF429 (MICH, on extended loan to RET, nrITS & nrLSU seq'd.). CALIFORNIA—Shasta Co. - Castella [41.1399° N / 122.315° W, 670 m], 8.ix.2013 Aron Cena 2013090801 [mushroomobserver #187725] (RET 660-4, nrITS & nrLSU seq'd.), 12.x.2013 A. Cena 2013101203 [mushroomobserver #187726] (RET 660-9, nrITS & nrLSU seq'd.), 13.x. 2013 A. Cena 2014112201 [mushroomobserver #190682] (RET 664-8, nrLSU seq'd.) 22.xi.2014 David Kent 1013133 [mushroomobserver #188263] (RET 660-8, nrITS & nrLSU seq'd.). Sonoma Co. - Salt Point St. Pk. [38.5754° N/ 123.313° W, 216 m], 26.x.2018 Adam Bryant s.n. [mushroomobserver #340366] (RET 848-2, nrITS & nrLSU seq'd.). OREGON—Clackamas Co. - Mt. Hood Nat. For., Bull Run Watershed, ca. chanterelle study site [45°25.466’ N/ 122°05.666 W, 2186 m], 19.x.1998 Janet E. Lindgren 981 (RET 289-7, nrLSU seq'd.). WASHINGTON—Thurston Co. - Olympia, 48th Way NW [47.1044° N/ 123.036° W, 41 m], 17.xi.2018 Ellen Rice & Sally Bennett s.n. [mushroomobserver #345265] (RET 852-6, nrLSU seq'd.), 13.viii.2019 Ellen Rice & Sally Bennett s.n. [Mycoflora MF 04781] (RET 880-4, nrLSU seq'd.), 14.viii.2019 Ellen Rice & Sally Bennett s.n. [MycoFlora MF 04784] (RET 880-3, ITS2-LSU seq'd.)). Whatcom Co. - Mt. Baker, Hannegan Pass Tr., 27.x.1991 Buck McAdoo 117#3 (RET 049-8, nrITS-LSU seq'd.). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
discussion |
In the single specimen shared with me by Dr. States,
the base of the stipe
and the volva are lost. Dr. States' notes record "cf. A. umbrinolutea." This suggests a zonate distribution of pigment on the pileus (involving three or more concentric zones); however, such pigmentation is not clearly evident in the exsiccatum. This species probably has the unusual nrLSU 5' motif that is associated with subsection Penetratrices. A list of species having the same motif is available on the techtab of A. penetratrix. A recent single gene (nrLSU) tree showed the present species in a small cluster including two other members—A. trygonion and A. emodotrygon. The latter (described from northern India) has a brownish gray band over the marginal striations on an otherwise a pale gray cap (i.e., two color zones). The former is pale gray with some yellowish tint over the disc. States AEF429 had not achieved maturity; very few basidia bear sterigmata. We were not successful in deriving an nrITS sequence from this species. However, we did succeed in obtaining 200 characters from the 3' end of 18S and much of ITS1 and a similar sized fragment including the 3' end of ITS2 and dominated by a 28S fragment including the 5' motif known from the "subsection Penetratrices." This species has been identified several times by experienced collectors as a pallid or "albino" form of Amanita pachycolea. Presumably this is because of the dark ring over the inner ends of the marginal striations. On this site, this taxon has formerly been called "Amanita sp-AZ29." | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
citations | —R. E. Tulloss & L. V. Kudzma | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
editors | RET | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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name | Amanita castellae |
name status | nomen provisorum |
author | Tulloss, Kudzma & S. D. Russell |
english name | "Castella Ringless Amanita" |
images | |
photo | Aron Cena - (1) Castella, Shasta County, California, U.S.A. (RET 664-8) [Note: The original image can be found on mushroomobserver.org here.] |
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.