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  • Under Assessment
  • 3Preliminary Assessed
  • 4Assessed
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Amanita roseolamellata A.E. Wood

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Scientific name
Amanita roseolamellata
Author
A.E. Wood
Common names
 
IUCN Specialist Group
Mushroom, Bracket and Puffball
Kingdom
Fungi
Phylum
Basidiomycota
Class
Agaricomycetes
Order
Agaricales
Family
Amanitaceae
Assessment status
Under Assessment
Proposed by
Susan Nuske
Assessors
Susan Nuske
Editors
Frances Guard, Patrick Leonard, Susan Nuske
Contributors
Frances Guard, Patrick Leonard, Susan Nuske
Comments etc.
Anders Dahlberg

Assessment Status Notes

Taxonomic notes

SCIENTIFIC DESCRIPTION:
Cap: applanate; 50 – 100 mm diameter; dry, buff to pale greyish surface, with scattered patches of cream velar remains near centre; with pellucid striate margin, (Specimen rather insect eaten on surface)
Stipe: cylindrical with no basal bulb; approximately 80-150 × 10-15 mm, white, annular remnants only seen, large white saccate volva
Gills:  crowded, deep, pale pink, narrowly adnate, to free, 1 tier lamellulae.
Flesh: white
Taste: nil noted
Chemical reactions: nil
Spore print: white.
Spores: broadly ellipsoid to elongate; (10.04) 10.42 – 11.64 (12.14) × (7.04) 7.23 – 8.05 (8.15) μm, Q = 1.44; inamyloid. (Wood: 10-12 x 6-9 μm; Q 1.49-1.56 (1.71))
Basidia: 4 spored
Cheilocystidia: Infrequent balloon cells (24 μm) and large clavate cells (30-33 μm)
Velar Remnants on cap: Almost entirely filamentous hyphae, some clamp connections seen. (Wood: Clamps usually present, but may be absent)
Habitat: Sandy soil in Banksia, Scribbly gum heathland.
Notes: found on old fire trail. This was determined from A. Wood’s Key to Amanitas, 1997.
This specimen fits his description well, though the marginal cells (cheilocystidia) were not as large.
Collections examined: F2012030 single specimen in Great Sandy NP (Cooroibah Section), F. Guard, 3 Mar 2012.

There are two specimens in BRI from North Queensland that are labelled A. roseophylla (Jenkins 1985).  However, after one of us (F. Guard) examined these specimens, they were found to fit Wood’s (1997) description of A. roseolamellata. Amanita roseophylla is an American species restricted to Alabama and is in Sect. Amanita (Jenkins 1985). On the other hand, Am. roseolamellata fits into Sect. Caesarae (Wood 1997) which is supported with molecular data (Sánchez-Ramírez et al. 2015).
This potentially extends the distribution of this species by >1500 km, which is likely to be a separate sub-population (see Geographic Distribution).

Below is the differences between A. roseophylla (Jenkins) and A. roseolamellata (Wood) in morphology and putative hosts.
Cap size: 20-40mm diam. (A. roseophylla); 50-100mm diam. (A. roseolamellata)
Velar remains: Sparse, thin, disappear with age (A. roseophylla); If present, thick off-white patches (A. roseolamellata)
Stipe: 50 x 7-8mm, annulus disappearing with age, base swollen, sub-abrupt, egg shaped, volva often absent, if present (A. roseophylla); 50-100mm, persistent annulus, base not swollen, volva large white, saccate (A. roseolamellata)
Gills: floccose, pink (A. roseophylla); pink (A. roseolamellata)
Spores: Ellipsoid, inamyloid, 10.2-11.7 x 7-7.8 um (A. roseophylla); Ellipsoid to elongate, inamyloid 10-12.6 x 6.3-8 um (A. roseolamellata)
Associated species: Pinus taeda, Loblolly pine (USA)  (A. roseophylla); Allocasuarina littoralis, Eucalyptus racemosa etc (A. roseolamellata)


Why suggested for a Global Red List Assessment?

This species is a readily recognisable Amanita with few collections. The habitat of this species is highly fragmented and in decline. Many of these areas are small patches of forest surrounded by urban or agricultural land, with recent (within the last few decades) severe decline in forest extent and increasing pressure for urban development.
This species was written up by Pat Leonard, Fran Guard and Susan Nuske as part of a conservation initiative by the Queensland Mycological Society and Nigel Fechner. This species was flagged as a potentially threatened because it has few collections in Queensland and its habitat is in urban, built-up areas. As the investigation continued, it was found that this species has a wide distribution in Australia. Therefore, it is recommended by S. Nuske to be listed as Least Concern with continued monitoring in existing habitats and other likely habitats.


Geographic range

Australia in states/territories Queensland, New South Wales, the Australian Capital Territory and Northern Territory (***plus another, yet to be confirmed record from northern Kimberley Theda Station, northern Western Australia - Matt Barrett***)
Extent of Occurrence (EOO): 2,239,754 km2
Area of Occupancy (AOO): 68 km2

Locations were defined as recorded sites that are within a continuous forest or forest that is close in proximity that still stands today where a single event could affect all individuals within a population (e.g. fire or cyclone). Subpopulations were defined as locations that are < 500km from each other (Dahlberg and Mueller 2011).
Subpopulation 1 New South Wales and Australian Capital Territory
EOO: 67,406 km2
AOO: 36 km2
Location 1: Canberra Botanic Gardens (ACT) where it was found twice (1995 & 2003, H. Lepp).
Location 2: Genaren Hill Sanctuary in Parkes Shire (NSW) (2000, J.M. Trappe).
Location 3: Blue Mountains NP (2000, N.A. Sawyer, 33°43´S, 150°26´E); Little Hartley, Lithgow, Blue Mountains (2011, 2012 L. Albertella; sequenced by Tulloss et al.  Accession numbers: KP866166, KP866165, KP866164); Wentworth Falls (1980’s A.M. Young within (Wood 1997)); Mt Wilson (1980’s A.M. Young within (Wood 1997)); Wyong, Watagan State Forest (1980’s A.M. Young et al. within (Wood 1997)).
Location 4: Lane Cove National Park either 1999 or 2000, 33°47´S, 151°08´E (Sawyer et al. 2003a, 2003b).
Location 5: Dungog, Chichester State Forest 1980’s (A.M. Young et al. within (Wood 1997)).

Subpopulation 2 South East Queensland and Northern New South Wales
EOO: 12,068 km2
AOO: 20 km2
Location 6: Lake Cooroibah Section, Great Sandy NP (3/3/12 and 23/4/16, F. Guard) and Coolum Section Noosa NP (2013, P. Leonard).
Location 7: Maroochy Bushland Botanic Gardens (12/3/16, F. Guard).
Location 8: Blackbutt, Benarkin State Forest (1980’s A.M. Young within Wood 1997).
Location 9: Mullumbimby, Nullum State Forest (NSW, 1980’s J.J. Bruhl within Wood 1997).

Subpopulation 3 North Queensland
EOO: n/a
AOO: 8 km2
Location 10: Mt Baldy, Atherton, north Qld (Booth, R., Young, A.M. 2001, mislabelled Amanita roseophylla; see above discussion).
Location 11: Mt Zero*, near Paluma (ITS2 environmental sequence data, S. J. Nuske unpublished data (Nuske et al. 2018, report to WWF-Australia), 2014, 19° 2’14.17"S, 146° 6’38.20"E, OTU matching Accession number KP866164, e-value: 6.32E-133, percent identity match: 97%, percent coverage match: 100%, sequence length: 341. OTU occurred in 3/3 subsamples from one plot in the late dry season (November 2014) at 2-3.4% relative abundance of all sequences per sample).
*sites detected by DNA sequencing only may not represent viable populations with mature individuals.

Subpopulation 4: Northern Terriotry
Location 12: Litchfield National Park, NT (Barrett, M.D.; Bonito, G.M.; Lebel, T., 2014). MEL2382706A


Population and Trends

This species was originally described from 7 collections from 4 locations made in the 1980s (Wood 1997). It is a readily recognisable species and has been recorded at 8 new locations since then, with 4 new locations being in the last 5 years. As several new locations have been found, this suggests we are far from knowing the true distribution of this species, let alone any population trends.
However, the habitat in which it has been found has declined dramatically in extent since European settlement, mainly due to coastal and urban development and agriculture. Clearing of potential host trees in the Douglas-Daly region where the Northern Territory specimen was found, increased dramatically in the last two decades with over 35 000 ha cleared by the end of 2009, and 18% of the area cleared by 2011 (Lawes et al. 2015). Northern New South Wales and South-East Queensland have experienced the highest rates of clearing of Australia (Bradshaw 2012). The cleared forest in Queensland is equivalent to ~ 50% of the state’s total land surface and most of this clearing has happened in the last 50 years and in the South-East. In the wet tropics of North Queensland, where this fungus is found, ~52% is cleared for pasture. In Northern New South Wales, where subpopulation 1 is found, between 50-67% of Eucalypt forests have been cleared. Therefore, many locations where this species is found have degraded or have been highly fragmented which has implied population losses for this species.

Below is data on the number of locations recorded per decade:
decade list of known locations (numbers correspond to locations above) Cumulative known locations new locations locations per decade
1981-1990 3, 5, 8, 9 4 0 4
1991-2000 1, 2, 3, 4 7 3 4
2001-2010 1, 10 8 1 2
2011-2016 3, 6, 7, 11*,12 12 4 5

Population Trend: Uncertain


Habitat and Ecology

This species is ectomycorrhizal found in sclerophyll forest and wallum woodland. There are a number of potential ECM hosts in the various locations where the species is found, including Eucalyptus, Allocasuarina, Acacia and Melaleuca species.
There is no published information on the longevity of this species in natural conditions or other described species of this Section (Am. pallidofumosa, Am. egregia, Am. egreginus). This species is readily culturable (Sawyer et al. 2003a, 2003b).


Threats

The habitat in which this species is found has declined rapidly as it is much in demand for urban development and for agricultural production (particularly the locations within South East Queensland, Subpopulation 2). The sites in which these collections have been made are almost all managed by burning and have varying degrees of pollution, which could pose a threat for this species.

Residential & commercial developmentTourism & recreation areasAgriculture & aquacultureLogging & wood harvestingAgricultural & forestry effluents

Conservation Actions

Continued monitoring of known populations. Surveys of areas with potential populations. Public awareness of this species for monitoring.

Land/water protectionEducation & awareness

Research needed

Basic research on the mycorrhizal hosts, habitat preference and other ‘suitable’ habitat between the three sub-populations that haven’t been sampled extensively. Genetic research is needed to verify these populations are disparate.
We lack other basic ecological knowledge for this species. For instance, research on tolerance to fire, grazing by farm animals and invasive of weeds are needed to make more accurate conservation management plans.


Use and Trade


Bibliography

Bradshaw, C. J. A. 2012. Little left to lose: Deforestation and forest degradation in Australia since European colonization. Journal of Plant Ecology 5:109–120.
Dahlberg, A., and G. M. Mueller. 2011. Applying IUCN red-listing criteria for assessing and reporting on the conservation status of fungal species. Fungal Ecology 4:147–162.
Jenkins, D. T. 1985. A new species of Amanita VII. Mycotaxon 24:283–286.
Lawes, M. J., R. Greiner, I. A. Leiper, R. Ninnis, D. Pearson, and G. Boggs. 2015. The effects of a moratorium on land-clearing in the Douglas-Daly region, Northern Territory, Australia. Rangeland Journal 37:399–408.
Nuske, S. J., Anslan, S., Tedersoo, L., Krockenberger, A., Congdon, B., Abell, S. E. 2018. Final MERIT Report: Monitoring trial burning in marginal habitat at AWC property: fire and thinning and the effect on soil fungi. Report to WWF-Australia.
Sánchez-Ramírez, S., R. E. Tulloss, M. Amalfi, and J.-M. Moncalvo. 2015. Palaeotropical origins, boreotropical distribution and increased rates of diversification in a clade of edible ectomycorrhizal mushrooms (Amanita section Caesareae). Journal of Biogeography 42:351–363.
Sawyer, N. A., S. M. Chambers, and J. W. G. Cairney. 2003a. Utilisation of inorganic and organic phosphorus sources by isolates of Amanita muscaria and Amanita species native to temperate eastern Australia. Australian Journal of Botany 51:151–158.
Sawyer, N. A., S. M. Chambers, and J. W. G. Cairney. 2003b. Utilisation of inorganic and organic nitrogen sources by Amanita species native to temperate eastern Australia. Mycological research 107:413–420.
Wood, A. E. 1997. Studies in the Genus Amanita (Agaricales) in Australia. Australian Systematic Botany 10:723–854.


Known distribution - countries

Regional Population and Trends

Country Trend Redlisted