Canada

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

Global Range: P. crocata is a circumglobal species. In North America, it occurs in the Appalachian Mountains northeast to Labrador; in the northern Lake Superior region; and from the Pacific Northwest north to Alaska.

Comments: Pseudocyphellaria crocata occurs primarily on deciduous trees, less-frequently on conifers, and occasionally over mossy rocks. It generally occurs in humid microsites in moist, mature forests.

Note: For many non-migratory species, occurrences are roughly equivalent to populations.

Estimated Number of Occurrences: 21 to >300

Canada

Rounded National Status Rank: NNR - Unranked

United States

Rounded National Status Rank: NNR - Unranked

Rounded Global Status Rank: G4 - Apparently Secure

Reasons: Pseudocyphellaria crocata occurs in moist forests across a broad range. It has declined considerably in the last century because of air pollution, development, and deforestation.

Global Short Term Trend: Decline of 10-30%

Comments: Because of its sensitivity to air pollution, logging, and development, P. crocata has likely declined in North America and Europe during the last century (McCune 1995).

Comments: The principal threats to Pseudocyphellaria crocata are air pollution, development, habitat loss through deforestation, and short timber rotations in forestry practice (McCune pers. comm. 1995).

Biological Research Needs: McCune (pers. comm. 1995) is currently studying the relationships between lichens and forest management practices in the Pacific Northwest.

Needs: Protect mature forest habitats from deforestation.

Comments: (See element files for ecology and distribution information).