• Proposed
  • 2Under Assessment
  • 3Preliminary Assessed
  • 4Assessed
  • 5Published

Calicium corynellum (Ach.) Ach.

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Scientific name
Calicium corynellum
Author
(Ach.) Ach.
Common names
 
IUCN Specialist Group
Lichens
Kingdom
Fungi
Phylum
Ascomycota
Class
Lecanoromycetes
Order
Teloschistales
Family
Caliciaceae
Assessment status
Proposed
Proposed by
Daphne Stone
Assessors
Daphne Stone
Contributors
Rebecca Yahr

Assessment Notes

Taxonomic notes

Calicium corynellum was downlisted from England after Yahr (2015) determined the specimens from England were actually C. viride. However, Prieto et al (2020) determined that it is genetically different and show that it occurs scattered in Europe and North America.


Why suggested for a Global Red List Assessment?

New article by Prieto et al. (2020) assessed this sp. vs. C. viride and determined that it is not all C. viride as found by Yahr 2015 in England.
A new site was found in WA state.


Geographic range


Population and Trends

Widespread but rare throughout temperate and hemi-boreal Europe, and also recorded from western North America. Easily overlooked and maybe under recorded. Apparently declining in Europe.

Population Trend:


Habitat and Ecology

Siliceous rocks, steep or vertical and protected from direct rainfall, but in humid situations


Threats

In the UK, changing management of churchyards affects humidity. In North America logging impacts sites by changing humidity and temperature regimes.

Unintentional effects: large scale (species being assessed is not the target) [harvest]

Conservation Actions

Site/area protectionAwareness & communications

Research needed

Taxonomic status uncertain in the UK. Possibly confused with the similar but common and typically epiphytic C. viride.
Taxonomic issues addressed by Prieto et al. 2020, who determined that C. viride and C. corynellum are distinct phylogenetically and morphologically.
Found twice in Oregon Cascades by Rikkinen (2003) and once by Hardman and Stone in Ferry Co., (Colville NF) WA (unpublished, specimen Stone herbarium.)


Use and Trade


Bibliography

Simkin, J. 2003. Calicium corynellum. Plantlife Back from the Brink dossier. 216, 28 pp.


Known distribution - countries

Regional Population and Trends

Country Trend Redlisted