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

Clitopilus tillii (Krisai & Noordel.) Noordel. & Co-David

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Scientific name
Clitopilus tillii
Author
(Krisai & Noordel.) Noordel. & Co-David
Common names
Clitopile rose pourpré
Rhodocybe de Till
IUCN Specialist Group
Mushroom, Bracket and Puffball
Kingdom
Fungi
Phylum
Basidiomycota
Class
Agaricomycetes
Order
Agaricales
Family
Entolomataceae
Assessment status
Preliminary Assessed
Preliminary Category
DD
Proposed by
Annabelle Langlois
Assessors
Annabelle Langlois
Comments etc.
Anders Dahlberg

Assessment Status Notes

Clitopilus tillii is a small but colorful wood-decaying fungus usually growing in wet areas. Despite its striking and characteristic purplish colors, this species is so small that it is probably often overlooked. More data is necessary to determine its distribution. It is known from only 8 sites in Austria (all in the same valley), 1 site in France, and 1 site in Quebec province, Canada. It has not been reported since 2002. In France and Quebec it was found with Sphagnum, which indicates a possible ecological restriction to wetlands and therefore a threat of habitat loss. However, the taxonomy of this species remains to be clarified, as the North American and European specimens might be different species after further genetic study. Therefore, Clitopilus tillii was categorized as Data Deficient (DD).

Taxonomic notes

= Rhodocybe tillii Krisai & Noordel.

Clitopilus tillii (Krisai & Noordel.) Noordel. & Co-David, Persoonia 23: 164 (2009).


Why suggested for a Global Red List Assessment?

Clitopilus tillii is a small but colorful wood-decaying fungus usually growing in wet areas. This species is so small that it is probably often overlooked. However, its striking colors should catch the attention of any mycologist. Its identification is also very easy: according to Lamoureux (2002), C. tillii cannot be mistaken for any other species. Yet, it is known from only 8 sites in Austria (all in the same valley), 1 site in France, and 1 site in Quebec province, Canada. It has not been reported since 2002. In France and Quebec it was found with Sphagnum, which indicates a possible ecological restriction to wetlands and therefore a threat of habitat loss. However, the taxonomy of this species remains to be clarified, as the North American and European specimens might be different species after further genetic study.


Geographic range

Clitopilus tillii has been described and mostly found in Austria (Geyergraben Valley; Krisai-Greilhuber and Noordeloos 1998), but has also been seen in France (from the Chartreuse Mountains in Haute-Savoie, identified by P.-A. Moreau in 2000) and Canada (southern Quebec, Lanaudiere region; first and only observation by Y. Lamoureux in 2002).


Population and Trends

Clitopilus tillii is known from only 10 sites worldwide and has not been reported since 2002. Clitopilus tillii is small, but has stricking and characteristic purple color. We believe that it is often overlooked, but that it is usually correctly identified when found. Data on its distribution is too sparse to estimate a number of mature individuals or evaluate a population trend.

Austria: 8 sites in Greyergaben Valley (collection dates unclear, at least 1992, 1993, 1994, 1995 and 1996). See Krisai-Greilhuber and Noordeloos 1998.
France: 1 site in Chartreuses Mountains, Haute-Savoie (2000). See Francini 2000. Also Deneyer, personal communication.
Canada: 1 site in Quebec province (2002). See Lamoureux 2002.

Population Trend: Uncertain


Habitat and Ecology

Clitopilus tillii is a wood-decaying fungus. In Austria, it was found single or in small groups on rotten wood of Pinus nigra, either on trunks covered with mosses or on buried wood, in mixed Picea abies - Pinus nigra forest. The climate was pannonic and the underground was dolomitic (Krisai-Greilhuber and Noordeloos 1998). In France, it was found in a wet depression. In Quebec province (Canada), C. tillii was found on Sphagnum surrounding a drying bog. Clitopilus tillii seems to be restricted to swampy areas, but a more complete description of the Austrian sites would be necessary to confirm this ecology.

Bogs, Marshes, Swamps, Fens, Peatlands [generally over 8 ha]

Threats

Clitopilus tillii is possibly restricted to wetlands, which are especially threatened ecosystems, and might therefore be at risk of habitat loss and habitat quality loss.


Conservation Actions

There is currently no conservation action taken to protect Clitopilus tillii. The sites where C. tillii is currently known to grow should be protected. Clitopilus tillii is easily recognize and amateur mycologists could be of great help in data collection after learning where to find and how to identify this species.

Land/water protectionEducation & awareness

Research needed

Potential habitats should be investigated in order to better specify Clitopilus tillii’s population size, distribution and trends.

Clitopilus tillii specimens from North America and from Europe should be sequenced and compared to confirm they are the same taxon.

Clitopilus tillii is an easily identified species due to its characteristic purple cap and gills. In northeastern North America and in Europe, where C. tillii is found, there are numerous groups of amateur mycologists. Members of these groups can be recruited and instructed where to find and how to identify this species so they can target it during forays. Data from amateur mycologists can be critical to help define Clitopilus tillii population size, distribution and trends.

TaxonomyPopulation size, distribution & trends

Use and Trade


Bibliography

Deneyer, Y. (2010). Rhodocybe tillii. Retrieved 19 April 2016 from users.skynet.be/deneyer.mycology.
Francini, L. (2000). Rhodocybe tillii Krisai & Noordel. Retrieved 19 April 2016 from francini-mycologie.fr.
Krisai-Greilhuber, I. and Noordelos, M. E. (1998). Rhodocybe tillii, a conchate new species found in Austria. Österreicische Zeitschrift für Pilzkunde 7: 263-268.
Lamoureux, Y. (2002). Clitopilus tillii (Krisai & Noordel.) Noordel. & Co-David / Clitopilus rose pourpré. Retrieved 19 April 2016 from flickr.com.
Rhodocybe tillii. (2015). Retrieved 19 April 2016 from mycoquebec.org.


Known distribution - countries

Regional Population and Trends

Country Trend Redlisted