Amanita goauldiorum - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella

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name	Amanita goauldiorum
name status	nomen provisorum
author	Tulloss
english name	"False Gods' Ringless Amanita"
images	1. Amanita goauldiorum, Maplewood, Essex Co., New Jersey, U.S.A. 2. Amanita goauldiorum, Maplewood, Essex Co., New Jersey, U.S.A.
intro	The following is based on the original research of R. E. Tulloss.
cap	The cap of A. goauldiorum is ?? mm wide, orangish brown disc, paler and with grayish tint over the marginal striations, and bears a low umbo. The flesh of the cap is white, and no bruising or staining of the flesh was observed. The cap's margin is tuberculate-striate with the striations occupying about 65% of the cap's radius. Volval remnants were absent from the cap in the single collection examined.
gills	The gills of this species are free to seceding and have a faint decurrent line on the upper stem. The gills are close, white in mass, white in side view; and bruising and staining were not observed. The gills have a white flocculose edge. The short gills are truncate, of diverse lengths, unevenly distributed [0 - 3 (-4?) between a pair of regular gills], and plentiful.
stem	The ringless stem is white, becomes brown from handling, narrows upward, and is decorated with flocculose white material that is densest on the upper stem. The flesh of the stem is white, is stuffed or hollow, and has no staining or bruising reaction. The volva at the stem's base is a membranous, saccate volva that is probably whitish.
odor/taste	Odor and taste were not reported.
spores	The spores of this species measure 10.0 - 13.4 (-14.2) × (5.4-) 6.4 - 8.9 (-9.1) µm and are ellipsoid to elongate (rarely cylindric) and inamyloid. The presence or absence of clamps on the basidia remains to be determined.
discussion	Among North American species of section Vaginatae with Q around 1.55-1.75 or higher, there are none with pileus color comparable to that seen in the present taxon and only one is exannulate—A. floridana (black disc with avellaneous margin). The spores of the latter are predominantly elongate to cylindric with Q’ = 1.89. The following provides a comparison between the spore size-shape of the present species and that of A. rooseveltensis. Please note that the sample sizes of the two sets of spores behind the comparison are quite different: An nrLSU sequence was derived as part of the Agaricomyete Development Project (thanks to Bálint Dima and Laszlo Nagy, Szeged Univ.). There is no question that the species is assignable to Amanita sect. Vaginatae and belongs in Amanita stirps Rooseveltensis. ??more??—R. E. Tulloss
brief editors	RET

name

Amanita goauldiorum

author

Tulloss nom. prov.

name status

nomen provisorum

english name

"False Gods' Ringless Amanita"

etymology

Honoring the "military science fiction" television series "Stargate SG-1" in which the evil, parasitic race known as "Goa'uld" were (for the first eight seasons) the major threat to all other self-cognizant life in the Galaxy.

GenBank nos.

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accession	locus	voucher	source



MK277538	nrLSU	7.viii.2003 Renato DeBellonia s.n. (RET 368-3)	L. Nagy, Agaricales Diversification, Szeged Univ.

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 is based on the original research of R. E. Tulloss.

pileus

?? mm wide, orangish brown disc, sordid and palely concolorous over striations, with low umbo; context white, no bruising or staining observed; margin tuberculate-striate (0.65R), nonappendiculate; universal veil absent in collection examined.

lamellae

free to seceding with faint decurrent line on upper stipe, close, white in mass, white in side view, bruising and staining not observed, ?? mm broad, with white flocculose edge; lamellulae truncate, of diverse lengths, unevenly distributed [0 - 3 (-4?) between pair of lamellae], plentiful.

stipe

?? × ?? mm, white, browning from handling, narrowing upward, decorated with flocculose white material (densest in upper portion); contents white, staining and bruising not observed, stuffed or hollow, with ?? mm wide central cylinder; exannulate; universal veil as saccate volva, membranous, white?, ??.

odor/taste

Odor and taste not reported.

macrochemical
tests

none reported.

basidia

??, 4-sterigmate, ??; clamps ??.

basidiospores

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[20/1/1] 10.0 - 13.4 (-14.2) × (5.4-) 6.4 - 8.9 (-9.1) µm, (L = 11.5 µm; W = 7.3 µm; Q = (1.34-) 1.40 - 1.86 (-2.07); Q = 1.59), thin-walled, smooth, hyaline, colorless, inamyloid, ellipsoid to elongate, rarely cylindric, adaxially flattened; apiculus sublateral, cylindric, proportionately short and broad; contents mono- or multiguttulate with or without additional small granules; ?? in deposit.

ecology

Solitary. In lawn under Quercus and Acer, in a year of record rains and a period of temperatures regularly exceeding 32° C.

material examined

U.S.A.: NEW JERSEY—Essex Co. - Maplewood, 7.viii.2003 Renato DeBellonia s.n. (RET 368-3, nrLSU seq'd.).

discussion

This species is known only from a single site.

There is only one known North American species of section Vaginatae with Q of 1.55 or higher, —A. floridana (black disc with avellaneous margin). The spores of the latter are predominantly elongate to cylindric with Q’ = 1.89.

Hence we can argue for novelty the present proposed taxon on morphological grouns.

??more??

As in the case of A. floridana, it is possible that there was originally a ring on the stem of the single known specimen of this taxon and that the taxon should be placed in Amanita sect. Caesareae.

Formerly, this entity was called "Amanita species 52" in Tulloss' keys, unpublished manuscripts, and correspondence.

citations

—R. E. Tulloss

editors

RET

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name	Amanita goauldiorum
name status	nomen provisorum
author	Tulloss
english name	"False Gods' Ringless Amanita"
images	1. Amanita goauldiorum, Maplewood, Essex Co., New Jersey, U.S.A. 2. Amanita goauldiorum, Maplewood, Essex Co., New Jersey, U.S.A.
photo	Renato deBellonia - (1-2) Maplewood, Essex County, New Jersey, U.S.A.

name	Amanita goauldiorum

name	Amanita goauldiorum

Spore data for collections
provisionally identified as: Amanita goauldiorum Tulloss

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.

basidiospore definition

Spore Measurements by Collection

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