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

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name	Amanita griseoconia
name status	nomen acceptum
author	D. A. Reid
english name	"Australian Gray Dust Lepidella"
intro	Description based on Reid (1980).
cap	The cap of Amanita griseoconia is up to 95 mm wide, at first strongly convex, fawn, with a conspicuously appendiculate margin. The cap bears prominent, steel-gray, conical warts, becoming flattened, the warts collapse or disappear, leaving small, innate, darker pulverulent (lens) scales. The flesh is white.
gills	The gills are white.
stem	The stem is up to 11.5 - 22 mm, cylindric, somewhat swollen, white, covered with dense rings of tiny, flocculent scales and a 32 - 35 mm wide, fusiform bulb. The ring is farinaceous and quickly disappearing. The volva may be present as indistinct rings around the top of the bulb. The flesh is white.
odor/taste	The odor and taste of this species were not recorded.
spores	The spores measure 7.8 - 11.0 × 6.8 - 9.0 µm and are globose to subglobose to ellipsoid and amyloid. Clamps are present at bases of basidia.
discussion	This species was originally described from Victoria, Australia, and is known only from the type. No ecological information was provided. According to the key of Bas (1969) the most likely placement for Amanita griseoconia is in stirps Daucipes.—R. E. Tulloss
brief editors	RET

name

Amanita griseoconia

author

("griseo-conia") D. A. Reid. 1978. Victorian Naturalist 95: 48.

name status

nomen acceptum

english name

"Australian Gray Dust Lepidella"

MycoBank nos.

308555

GenBank nos.

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accession	locus	voucher	source



No data available in table

holotypes

selected illustrations

Reid. 1980. Austral. J. Bot., Suppl. Ser. 8: 31, fig. 18(a-c), 66, 95.

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 the protolog and from Reid (1980).

pileus

from Reid (1980): up to 95 mm wide, fawn, strongly convex at first, at length becoming flattened; context white; margin conspicuously appendiculate with farinaceous material; universal veil at first as prominent, evenly distributed, steel-gray, conical warts, later as dark, very thin, pulverulent patches (lens required).

lamellae

from Reid (1980): white.

stipe

from Reid (1980): up to 115 × 22 mm, white, cylindric, "covered with dense rings of tiny flocculent scales"; bulb 32 - 35 mm [wide?], somewhat swollen, fusoid, immarginate; context white; partial veil lacking; universal veil lacking or present as "indistinct ring of scales" around top of bulb.

odor/taste

not recorded.

macrochemical
tests

none recorded.

pileipellis

not described in protolog.

pileus context

not described in protolog.

lamella trama

not described in protolog.

subhymenium

not described in protolog.

basidia

from Reid (1980): 35 - 50 × 9.0 - 12.5 μm, 4-sterigmate; clamps present.

universal veil

from Reid (1980): On pileus: hyphae 2.5 - 5.0 μm wide, thin-walled, hyaline, scanty, nearly absent in bases of warts; inflated cells predominating, globose (up to 60 μm wide) to subglobose to ovate or clavate [up to 70 (-100) × 45 μm], having anticlinal orientation in upper part of conical warts of young basidiomes, disordered in basal part of warts.

stipe context

not described in protolog.

lamella edge tissue

from Reid (1980): inflated cells clavate to spheropedunculate, up to 20 μm wide; clamps often present. [Note: This tissue misdescribed by Reid as cheilocystidia.—ed.]

basidiospores

send to graphing tool

from protolog: [-/-/1] 7.8 - 11.0 × 6.8 - 9.0 μm, (est. Q = 1.10 - 1.20), amyloid, subglobose to broadly ellipsoid; apiculus not recorded; contents not recorded; color in deposit not recorded.

ecology

not recorded.

material examined

from protolog: AUSTRALIA: VICTORIA—Shire of South Gippsland - Wilson's Promontory Nat. Pk., Tidal River, Lilly Pilly Gully, 2.v.1976 D. A. & D. G. Reid s.n. (holotype, K).

discussion

Reid compares this species only to others of sect. Lepidella, and we concur with its assignment to that section. Moreover, according to the keys of Bas (1969), the species can be placed with confidence in subsect. Solitariae. Because of the vertical orientation of the cells in the volval warts on the pileus and the minimal hyphae present in these warts, placement in Bas' stirps Daucipes seems probable.

The species described under the present name by Wood (1997) differs in having a bulb that strikingly broader than the stipe and inverse turbinate as depicted and spores that are notably smaller than those reported by Reid.

citations

—R. E. Tulloss

editors

RET

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name	Amanita griseoconia
name status	nomen acceptum
author	D. A. Reid
english name	"Australian Gray Dust Lepidella"

name	Amanita griseoconia
bottom links	[ Section Lepidella page. ] [ Amanita Studies home. ] [ Keys & Checklists ] [ Australia/New Zealand List ]

name	Amanita griseoconia
bottom links	[ Section Lepidella page. ] [ Amanita Studies home. ] [ Keys & Checklists ] [ Australia/New Zealand List ]

Spore data for collections
provisionally identified as: Amanita griseoconia D. A. Reid

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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