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Pustulate Tarpaper Lichen - Collema curtisporum
State Rank Reason (see State Rank above)
In Montana this lichen occurs in a few locations and is not always present where habitat appears to be suitable.
General Description
Thallus foliose, to 2(4) cm broad, black, gelatinous when wet, with broadly rounded lobes; isidia and soredia lacking; spores 4-septate, hyaline, 20-40 by 3-4.5 microns, with blunt ends, straight or curved; apothecia generally present
McCune and Geiser 2009. Chemistry: Spot tests are negative
McCune and Geiser 2009.
Species Range
Montana Range
Range Descriptions
Native
Range Comments
Eastern Washington, northern Idaho, western Montana, and northeastern Oregon (McCune and Geiser 1997); also reported from Sweden. In Montana it has been found on both sides of the Continental Divide, mostly between 900 and 100 meters.
Observations in Montana Natural Heritage Program Database
Number of Observations: 35
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Map Help and Descriptions
Relative Density
Recency
(Observations spanning multiple months or years are excluded from time charts)
Habitat
Habitat: Moist riparian forests, often in narrow sheltered valleys. Substate: Trunk (bark) of Populus trichocarpa; occasionally on conifer twigs.
Reproductive Characteristics
Reproduces sexually by spores from the apothecium.
Stewardship Responsibility
Threats or Limiting Factors
None identified.
References
- Web Search Engines for Articles on "Pustulate Tarpaper Lichen"