Rickenella swartzii

Primarily found in the northwest United States and northern Europe. It is unknown how many individual organisms are located at each site of occurrence and there is no estimation as to how large each organism is and how many fruiting bodies it has. Estimated range is greater than 1,000,000 square miles worldwide. Long-term and short-term trends unknown. Moderate and imminent threat. The ISMS database notes 2 protected occurrences in Washington. Estimated number of occurrences is 21-80. Moderately vulnerable. Narrow environmental specificity. Because of a lack of collections and information about this species and the widespread possible habitat for this species, the guide for ranking poorly known species was used to assign the Grank.

Estimated range greater than 1,000,000 square miles worldwide. Primarily found in the Northwest United States (including Montana) and northern Europe.

Estimated number of occurrences is 21-80. The ISMS database contains 18 records: 2 in California, 5 in Washington, the rest unspecified. The University of Michigan Fungal Bioinformatics Project database documents 1 site in California and 2 in Washington. It is unknown whether any of these sites is identical. Other areas where this species has been noted include Montana and many places in Europe: The Czech Republic, England, Finland, France, Germany, The Netherlands and possibly Italy.

Moderate and imminent threat. Widespread logging, road and trail construction, or other activities that destroy the mossy substrate in late successional forests where this species occurs are threats. Because this species prefers late-successional forest, destruction of its habitat indicates that harmed populations would require a long recovery time.