• Proposed
  • Under Assessment
  • ENPreliminary Assessed
  • 4Assessed
  • 5Published

Inonotus albertinii (Lloyd) P.K. Buchanan & Ryvarden

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Scientific name
Inonotus albertinii
(Lloyd) P.K. Buchanan & Ryvarden
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Preliminary Assessed
Preliminary Category
Proposed by
Patrick Leonard
Patrick Leonard
Comments etc.
Anders Dahlberg

Assessment Status Notes

Taxonomic notes

Inonotus albertinii (Lloyd) Buchanan P K & Ryvarden 1988
Phaeolus albertinii (Lloyd) Reid, comb.nov.(Fig. I 15, p. 2 72).
Polyporus albertinii Lloyd in ‘Synopsis of the stipitate polyporoids’: 160, fig.
460 (I g 12) in Mycological Writings 3.
Sporophores up to 12 cm. high, normally with a central stalk, and appearing
turbinate in longitudinal section. Pileus 70-170 mm. in diam., varying from
irregular to more or less circular in outline when well developed, and often
becoming somewhat depressed at the centre. The surface, which varies in
colour from ferruginous to dark brown, has a very variable texture. It may
be formed of a rather coarse felty tomentum or this tomentum may become
weathered and flattened. Yet again weathering may produce sporophores
in which the tomentum becomes matted together into a thin, light reddish brown, membranous, papery layer. In very old weathered specimens the
surface itself is often very irregularly pitted and ridged, and nearer the
margin may be ornamented with coarse, radiating, adpressed, spiculose
processes giving an almost scaly effect. In the majority of specimens, however, the surface is either even or thrown into a number of irregular gibbous
swellings. Stem 20-50 mm. thick at the base, but expanding gradually into the
pileus. The stipe is often ill defined since the tubes are strongly decurrent and
frequently descend almost to soil level. However in some fruitbodies there
may be a rather distinct swollen base to the stipe. Pores 1.5-3 per mm.
angular or with thin wavy dissepiments which appear concolorous with the
rest of the sporophore, at least in herbarium material. Tubes up to 18 mm.
long. Context ferruginous, soft and spongy, especially near the surface of the
fruitbody where it is easily compressed, but becoming firmer in the stipe.
fibrillose appearance. Hyphal structure monomitic. Hyphae on the context of
the pileus, branched, twisted, ribbon-like, and frequently collapsed. These
hyphae, which are up to 13 µm wide, have thin pale brown walls and lack
clamp-connexions at the septa. The hyphae in the dissepiments are similar
but narrower, reaching only 5 µm in diam. Setal hyphae are also present in the
dissepiments. These are very elongated, pointed bodies, with markedly
thickened, dark brown walls. They are up to 300 µm long and 8-11 µm wide,
and originate quite suddenly from rather broad (-8 µm), septate, thin-walled
hyphae in the tube walls. Normally these setal hyphae remain buried in the
tissue of the dissepiments but occasionally they may diverge slightly and
project into the tubes. Setae not seen and presumably absent. Basidia not
seen. Spores 7-9 × 4-5 (-5.5) µm, brown, with distinct walls; spore print
brown. The spores are elliptical in shape but they sometimes appear slightly
depressed on the inner surface.
Habitat: on the ground, usually arising from the roots of Eucalyptus spp.;
on living root of a Eucalyptus sp. (bloodwood group), Magnetic Island,
north Queensland, 12 July 1954, Miss J. V. Hunt 4713; on the ground
amongst grass, Magnetic Island, May 1958, Miss J. V. Hunt 6831; on
charred Eucalptus fastigiata, Coffs Harbour, New South Wales, 12 Jan. 1955,
H. J. Cann 5055.
Until the receipt of the three collections cited above, P. albertinii was known
from only two gatherings. The first from Endeavour River, Queensland, was
originally referred to P. schweinitzii Fr. by Cooke. Lloyd, however, recognized it as a distinct species and giving way to his sense of humour named it
P. albertinii to emphasize its similarity to P. schweinitzii, the two names
Albertini and Schweinitz being so closely linked in the minds of mycologists.
The second collection of Phaeolus albertinii from J. Burton Cleland, New
South Wales, was reported by Lloyd (1918).

Why suggested for a Global Red List Assessment?

Inonotus albertinii is a distinctive ectomycorrhizal species, easy to identify in the field. Distribution is limited to riverine habitats undergoing rapid change. Many of these habitats have been cleared and poached by farm and feral animals, and have experienced nutrient enrichment.
There have only ever been 10 functional individuals found from 6 different sites. Using the Dahlberg & Mueller (2011) methodology we estimate that, allowing for previously known and as yet undiscovered sites, there might be up to 24 sites and a population of up to 100 mature individuals.
But, it appears that the population for this species is very fragmented. We consider that there are two subpopulations separated by 1000 kms of possibly unsuitable (farmed or too dry) habitat and this reflected in the historical records.
This species is assessed as “endangered” on the basis of criteria B2a with only 6 known sites and a potential of 24 sites in an endangered ecosystem and D1 on account of the a very small estimated population of less than 100 mature individuals.
We have made our assessments on the basis of records made in the last 50 years. Calculating the area of occupancy (AOO) poses a problem in this species if it is limited to seasonally flooded river banks. Such habitats are themselves endangered in Queensland (Regional Ecosystem Globe)

Geographic range

Inonotus albertinii is only known from Queensland and northern New South Wales in Australia.

Population and Trends

Inonotus albertinii is known from sites which are either coastal and or creek/riverside, growing on the roots of mature trees and possibly linked to regularly inundated sites. Originally described from the Endeavour River north of Cooktown a century ago, there are 3 more collections from more than 50 years ago and 5 collections in the last 25 years.  No trends can be detected from this sparse data, but there have been no further collections from the four original collection sites. The habitat associated with this species has been in sharp decline due to land clearing and poaching by livestock and feral animals.
QLD Cols Au Cols 50+ Yr 25-50 Yr 0-24 Yr Nom
9 10 4 0 6 6

QLD Cols = Collections /records made in Queensland
Au Cols = Collections /records made in Australia
50+, 25-50 and 0-24 = the number of collection/records made in each period.
Nom = Number of localities sensu IUCN.

Population Trend: Deteriorating

Habitat and Ecology

Inonotus albertinii is a fungus forming ectomycorrhiza with on roots of Corymbia and Eucalyptus (E. tereticornis, E. siderophloia, E. fastiagata) and possibly associated with creek side locations that flood occasionally. It has been suggested to be be a parasite which fruits on mature trees when they start to die.

Subtropical/Tropical Moist Lowland Forest


It is vulnerable to urbanisation, fire events, cyclones and other climate change events. Littoral habitats on farms are vulnerable to land clearing and poaching where cattle grazing extends to creek edges and the composition of riverside vegetation has changed over the past century with both nutrient enrichment and weed species changing the vegetation mix. The recent arrival of Myrtle rust in Australia may also endanger the survival of the host tree species. It might also be vulnerable to collection by craft spinners and fabric makers if it is mistaken for Phaeolus schweinitzii, “the dyers polypore”.

Conservation Actions

Not protected. Threat listing would provide a first step to conservation action.

Research needed

.Work is needed to clarify the biology of this fungus including its host and habitat preferences and fruiting patterns.


Buchanan P K & Ryvarden, Mycotaxon 31: 12 (1988)
Cunningham G. H. (1965) The Polyporaceae of New Zealand. DSIR Bulletin 164: 199 (as Inonotus hispidans)
Dahlberg A. and Mueller G.M. (2011) Applying IUCN red-listing criteria for assessing and reporting on the conservation status of fungal species. Fungal Ecology 4: 147-162.
Hood I. (2003) An introduction to Fungi on Wood in Queensland.  University of         New England. (as Coltricia albertinii)
Keane P.J. et al. (2000) Diseases and Pathogens of Eucalypts. CSIRO
Min-Woong Lee (2008) Introduction to Distribution and Ecology of Sterile Conks of Inonotus obliquus.Micobiology 36(4): 199-202.
Reid D A (1963) Kew Bull. Vol 17 p. 277 (as Phaeolusalbertini)
Ryvarden L. (2005) The Genus Inonotus. Synopsis Fungorum 21.Fungiflora

Known distribution - countries

Regional Population and Trends

Country Trend Redlisted