| name | Amanita collisus | ||||||||||||||||||||||||||||
| author | Tulloss, Kudzma, Wasilewski, Yeager, & S. D. Russell | ||||||||||||||||||||||||||||
| name status | nomen provisorum | ||||||||||||||||||||||||||||
| etymology |
collisus, collision—a noun in
apposition. The name relates to the pattern of the DNA in which the good signal quality region of the forward nrITS read and the similar region of the reverse nrITS read barely overlap when aligned. Prior to the overlap, the forward read is yielding a "CA" repeat of variable length; prior to the overlap, the reverse read is yielding a "TGGA" repeat of variable length. The two "trains" of repeats collide in a region that is unlikely to align well when two sequences of the same species are compared. | ||||||||||||||||||||||||||||
| GenBank nos. |
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Showing 1 to 3 of 3 entries | ||||||||||||||||||||||||||||
| intro |
The following text may make multiple use of each entry 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 base on the collectors' notes and images, on molecular research of Dr. Linas Kudzma and Stephen D. Russell, and other original research of RET. | ||||||||||||||||||||||||||||
| pileus | 40 - 70 mm wide, zonate in three bands (reddish-brown to brownish orange over the disc and umbo, then brownish yellow, the brownish orange over the striations), fragile, without surface staining or bruising, hemispheric at first, finally applanate and umbilicate, tacky, shiny; context white without staining or bruising, thinning rapidly toward margin, membranous in region of striations; margin nonappendiculate, striate (0.35 - 0.45R), incurved to decurved, splitting with age and drying; universal veil absent. | ||||||||||||||||||||||||||||
| lamellae | white in mass and in side view, narrowly adnate with decurrent line on stipe apex, crowded, up to 6 mm broad, with margins minutely and unevenly serrate; lamellulae present, ??, of diverse lengths. | ||||||||||||||||||||||||||||
| stipe | 90 - 150 mm long, white, with fine brown fibers, finely striatulate in lower part; context hollow; exannulate; universal veil as membranous, persistent, white sack 25 - 38 mm long from stipe base to highest point on limb, firmly attached to stipe surface for much of limb length, thinner above line of attachment, thicker below it. | ||||||||||||||||||||||||||||
| odor/taste | Taste bland to slightly oily. | ||||||||||||||||||||||||||||
| macrochemical tests |
none recorded. | ||||||||||||||||||||||||||||
| partial veil | absent. | ||||||||||||||||||||||||||||
| lamella edge tissue | sterile. | ||||||||||||||||||||||||||||
| ecology | Pennsylvania: At 400-625 m elev. In Carya-Quercus forest with Acer nearby or on very poor soil in mixed forest dominated by Carya with some Quercus, Acer, and scattered Populus and Tsuga canadensis. | ||||||||||||||||||||||||||||
| material examined | U.S.A.: PENNSYLVANIA—Luzerne Co. - Ricketts Glen St. Pk. [41.3036° N/ 76.2740° W, 400-600 m]. 12.vii.2014 David Wasilewski s.n. [mushroomobserver #169771] (RET 643-3, nrITS & nrLSU seq'd.); Red Rock [41.3055 ° N/ 76.3021° W, 625 m], 2.vii.2013 Phil Yeager s.n. [mushroom observer #140296] (RET 557-9, nrITS-LSU seq'd.). | ||||||||||||||||||||||||||||
| citations | —R. E. Tulloss | ||||||||||||||||||||||||||||
| editors | RET | ||||||||||||||||||||||||||||
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| name | Amanita collisus |
| name status | nomen provisorum |
| author | Tulloss, Kudzma, Wasilewski, Yeager, & S. D. Russell |
| images |
  1. Amanita sp-62, Ricketts Glen Pk., Luzerne Co., Pennsylvania, U.S.A. (RET 643-3)  2. Amanita sp-62, Ricketts Glen Pk., Luzerne Co., Pennsylvania, U.S.A. (RET 643-3)  3. Amanita sp-62, Ricketts Glen Pk., Luzerne Co., Pennsylvania, U.S.A. (RET 643-3) |
| photo | David Wasilewski - (1-3) Ricketts Glen Park, Luzerne County, Pennsylvania, U.S.A. (RET 643-3) [Note: Original images may be found on mushroomobserver here.] |
Spore data sets and their composite
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.
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