Home/Species/ Treepelt Lichen

Leioderma sorediatum

D. Galloway & P. Jørg.

Treepelt Lichen

G4Apparently Secure Found in 1 roadless area NatureServe Explorer →

G4Apparently SecureGlobal Rank

Identity

Unique IDELEMENT_GLOBAL.2.124371

Element CodeNLLEC06010

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryFungus

KingdomFungi

PhylumAscomycota

ClassLecanoromycetes

OrderPeltigerales

FamilyPannariaceae

GenusLeioderma

Other Common Names

Mouse Ears (EN)

Concept Reference

Esslinger, T.L. and R.S. Egan. 1995. A sixth checklist of the lichen-forming, lichenicolous, and allied fungi of the continental United States and Canada. The Bryologist 98(4): 467-549.

Conservation Status

Review Date2005-07-04

Change Date2004-05-14

Edition Date2001-08-31

Edition AuthorsD. Gries; rev. L. McDonald, J. Christy (2002, major revision)

Range Extent>2,500,000 square km (greater than 1,000,000 square miles)

Rank Reasons

Even though Leioderma sorediatum is nationally rare in the United States, only occurring in the Pacific Northwest and Hawaii, it is not equally rare in the other countries in which it occurs. Primarily, an Australasian distribution with trans-Pacific outliers in Hawaii and Packifc Northwest. Also, L. sorediatum has a somewhat broad habitat tolerance and can grow in disturbed areas. Its global distribution is restricted as it is not ubiquitous in the countries in which it occurs. Total estimated number of individuals is 3,000-10,000. Totasl estimated size of habitat is 10,000-50,000 acres. Populations and habitats likely stable, given variety of forest age classesin various parts of range. Several protected locations. Presumably not very threatened worldwide, given variety of forest age classes in various parts of range. Individuals not paricularly fragile, shrubby habitat not particularly fragile except for catastrophic disturbance.

Range Extent Comments

Leioderma sorediatum has a paleotropical distribution, and is most commonly found in New Zealand and Australia, but is absent from the southern Indian Ocean. It is also found in Sri Lanka and mainland India and further east in Asia. It also occurs in Malaya and Japan. In the Pacific it occurs in Hawaii and disjunctly in the Pacific Northwest of the United States, Canada and Ecuador (Galloway and Jorgensen 1987). It is most abundant in disturbed areas and forest edges, and has been found from sea level to 2600m.

Occurrences Comments

Total number of global occurrences unknown. Known occurrences in northern spotted owl region: 2 [FSEIS vol. 2: 91]; 3 [FSEIS vol. 1: 264].

Threat Impact Comments

Presumably not very threatened worldwide, given varietyof forest age classes in various parts of range.

Ecology & Habitat

Habitat

Is most frequent on a thin layer of bryophytes over stems of ericaceous shrubs (Vaccinium, Rhododenron); also grows on conifer and alder branches. Found in semi-open habitats on the coast, most often in dune woodlands and deflation plains. Always found within a few km of the ocean (McCune and Geiser 1997).

Leioderma sorediatum inhabits damp, humid areas such as rainforests and swamps. Of the seven species in this genus, L. sorediatum is the most tolerant of drought and low temperatures. It is most commonly found as an epiphyte on trees in moderate light, but it also grows on pumice on clay banks or mossy rocks (Galloway and Jorgensen 1987). This lichen species is most abundant in disturbed areas and occurs often on roadside trees or near the edges of secondary growth forests. It also occurs at a wide range of elevations, from sea level to 2600m (Galloway and Jorgensen 1987).

Terrestrial Habitats

Forest/WoodlandWoodland - MixedShrubland/chaparralSand/dune

Palustrine Habitats

FORESTED WETLAND

Other Nations (2)

CanadaN2

Province	Rank	Native
British Columbia	S2	Yes

United StatesNNR

Province	Rank	Native
Washington	S1	Yes
Alaska	S1	Yes
Oregon	S1	Yes

Plant Characteristics

Economic Value (Genus)No

Roadless Areas (1)

Oregon (1)

Area	Forest	Acres
Tenmile	Siuslaw National Forest	10,818

References (6)

Esslinger, T. L. 2018. A cumulative checklist for the lichen-forming, lichenicolous and allied fungi of the continental United States and Canada, Version 22. Opuscula Philolichenum 17:6-268. [http://sweetgum.nybg.org/philolichenum/]
Esslinger, T.L. and R.S. Egan. 1995. A sixth checklist of the lichen-forming, lichenicolous, and allied fungi of the continental United States and Canada. The Bryologist 98(4): 467-549.
Galloway, D. J. and P.M. Jorgensen, 1987. Studies in the lichen family Pannariaceae II. The genus Leioderma. Lichenologist 19(4): 345-400
Glavich, D. A. , L. H. Geiser, and A. G. Mikulin. 2005. The distributions of some rare coastal lichens in the Pacific Northwest and their association with the late-seral and federally-protected forests. The Bryologist 108(2): 241-254.
Goward, T., B. McCune, and D. Meidinger. 1994. The Lichens of British Columbia Illustrated Keys, Part 1- Foliose and Squamulose Species. Ministry of Forests Research Program, Victoria, British Columbia. 181 pp.
McCune, B. and L. Geiser. 1997. Macrolichens of the Pacific Northwest. Oregon State University Press, Corvallis, Oregon. A co-publication with the U.S. Department of Agriculture Forest Service. 386 pp.