• Proposed
  • Under Assessment
  • Preliminary Assessed
  • Assessed
  • CRPublished

Erioderma pedicellatum (Hue) P.M. Jørg.

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Scientific name
Erioderma pedicellatum
(Hue) P.M. Jørg.
Common names
IUCN Specialist Group
Assessment status
IUCN Red List Category
CR A2c+4c
Proposed by
Christoph Scheidegger
Christoph Scheidegger
Christoph Scheidegger

Assessment Notes

Assessed and published 2003-04-30. Needs updating: http://www.iucnredlist.org/details/43995/0

Assessor: Scheidegger, C. (Lichen Specialist Group)
Reviewer: Wolseley, P.A. & Smith, C. (Lichen Red List Authority)

Taxonomic notes

Why suggested for a Global Red List Assessment?

The Boreal Felt Lichen has declined in Europe and Atlantic Canada in recent times, mainly as a result of
air pollution and habitat loss. In addition to its sensitivity to atmospheric pollutants such as
acid rain, this species is threatened by logging of its forest habitat, which removes the trees on
which the lichen grows, and also alters the microclimate of the forest.
The tiny Nova Scotian population of the Boreal Felt Lichen is protected under the Federal Species at Risk Act (SARA), and is the focus of ongoing recovery efforts. Measures are also underway to try and formally protect the species’ habitat, and to encourage forest managers to implement management plans to prevent further habitat loss, hopefully giving the Boreal Felt
Lichen a brighter future

Geographic range

The species is known from small areas in Newfoundland and Nova Scotia (Canada) Alaska (United States of America) and Kamchatka (Russian Federation)

Population and Trends

Population Trend:

Habitat and Ecology

Erioderma pedicellatum is an epiphytic species with narrow habitat requirements (primarily old growth, highly oceanic coniferous forests). In Sweden and Norway the species grew on twigs of Norway Spruce (Picea abies) in a unique type of temperate rainforest. In Newfoundland this lichen grows predominantly on the trunks of Abies balsamea and rarely on trunks or twigs of Picea mariana.

The species has very low growth and reproductive rates.

Boreal Forest


industrial logging, forest stand thinning and air pollution are the major threats. In newfoundland it looks like E. pdeicellatum would establish on relatively young trees and then develop very slowly. High growth rates and reproduction are limited to overmature trees when more light is available at the trunk where E. pedicellatum is usually growing in Newfoundland. In Scandinavia and Alaska E. pedicellatum often grows on twigs and small branches.

Intentional use: large scale (species being assessed is the target) [harvest]

Conservation Actions

Transplantation of thallus fragments is an option for conservation translocations.

Site/area protection

Research needed

Ongoing research on genetic differentiation of the regional populations will show if the four populations can be redlisted together or if some should be considered separately.

Population trends

Use and Trade


CAMERON, R., I. GOUDIE, and D. RICHARDSON. 2013. Habitat loss exceeds habitat regeneration for an IUCN flagship lichen epiphyte: Erioderma pedicellatum. Canadian Journal of Forest Research 43: 1075-1080.
GOUDIE, I., C. SCHEIDEGGER, C. HANEL, A. MUNIER, and E. CONWAY. 2011. New population model help explain declines in the globally rare boreal felt lichen Erioderma pedicellatum in Newfoundland. Endangered Species Research 13: 181-189.
MAASS, W., and D. YETMAN. 2002. COSEWIC status report on Erioderma pedicellatum in Canada. Committee on the Status of Endangered Wildlife in Canada, Ottawa.
SCHEIDEGGER, C. 2003. The IUCN Red List of threatened species. Erioderma pedicellatum - critically endangered. IUCN SSC.
STEHN, S. E., P. R. NELSON, C. A. ROLAND, and J. R. JONES. 2013. Patterns in the occupancy and abundance of the globally rare lichen Erioderma pedicellatum in Denali National Park and Preserve, Alaska. The Bryologist 116: 2-4.
STEPANCHIKOVA, I. S., and D. E. HIMELBRANT. 2012. Lichen diversity hotspot in Kronotsky Nature Reserve, Kamchatka. Poster Session at the 7th International Association for Lichenology Symposium,
Bangkok, Thailand, January 9–13th 2012.
TØNSBERG, T., Y. GAUSLAA, R. HAUGAN, H. HOLIEN, and E. TIMDAL. 1996. The threatened macrolichens of Norway. Sommerfeltia 23: 1-258.

Known distribution - countries

Regional Population and Trends

Country Trend Redlisted