• Proposed
  • Under Assessment
  • Preliminary Assessed
  • ENAssessed
  • Published

Aleurocystis gloeocystidiata Rajchenb. & Robledo

Go to another Suggested Species...

Scientific name
Aleurocystis gloeocystidiata
Rajchenb. & Robledo
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Proposed by
Francisco Kuhar
Francisco Kuhar, Donald Pfister, Camille Truong
Gerardo Robledo
Comments etc.
Anders Dahlberg, James Westrip
Gregory Mueller

Assessment Notes


This species has a restricted range in Argentina, associated with Polylepis australis forests on the Sierras Pampeanas range. Its Extent of Occurrence covers only c.3,000 km2, and the species is severely fragmented within this range. Ongoing threats due to agriculture, cattle farming, and invasive species are thought to be causing continuing declines, and thus the species is listed as Endangered.

Taxonomic notes

no further synonyms recorded

Why suggested for a Global Red List Assessment?

This is an endemic species from from the Polylepis australis forests (Argentina), an environment that is heavily invaded and whose surface has been reduced to a minimum of its original extension.

Geographic range

This species is endemic to central and northern Argentina. It is restricted to Polylepis australis forests on the Sierras Pampeanas range. Its Extent of Occurrence covers only c.3,000 km2, and the species is severely fragmented within this range.

Population and Trends

This species occurs in an area that was intensively researched for many years, but it is not abundant in this region. Since fruiting bodies are exposed and not hidden, we assume that they should be easy to find. The population is thought to be in decline due to fragmentation and a severe reduction of the habitat.

Population Trend: Decreasing

Habitat and Ecology

This species is restricted to small twig of living Polylepis australis trees, growing saprotrophically.

Subtropical/Tropical Dry Forest


This species is threatened by the fragmentation and severe reduction of its habitat (due to agriculture and cattle ranching) as well as invasion of the forest by non native trees and shrubs such as Ligustrum lucidum and Pyracantha coccinea. Gallo et al. (2015) intensively sampled these forests and showed that the occurrence of the species is inversely correlated with the degradation status of the forest.

Housing & urban areasSmall-holder farmingAgro-industry grazing, ranching or farmingNamed species

Conservation Actions

Research strategies focusing on the conservation of the environment are being developed as are political initiatives to stop the reduction of the natural range of its host. Some natural reserves constitute a reservoir of the species, however, fire and cattle still affect the recovery of the host tree population there and the invasions are still progressing.

Resource & habitat protectionInvasive/problematic species control

Research needed

Host specificity studies are needed as well as information on its occurrence in isolated populations of the host. The presence in other species of Polylepis would mean a lower risk status for the species, but it has not been detected yet. Research into how invasive plants may impact this species (via their impact on the host tree) is required.

Population size, distribution & trendsLife history & ecologyThreatsHabitat trends

Use and Trade

No uses have been recorded.


Renison, D., Cuyckens, G. A. E., Pacheco, S., Guzmán, G. F., Grau, H. R., Marcora, P. I., ... & Bellis, L. M. (2013). Distribución y estado de conservación de las poblaciones de árboles y arbustos del género Polylepis (Rosaceae) en las montañas de Argentina. Ecologia Austral 23(1):27-36

Gallo, A.L., Robledo, G.L., Landi, M. and Urcelay, C. (2015). Evaluación de la restauración de la diversidad fúngica en un área reforestada con Polylepis australis (Rosaceae): un estudio de caso. Ecología austral, 25(3), 192-203.

Known distribution - countries

Regional Population and Trends

Country Trend Redlisted