Select a marker on the map to view specimen label data or photo metadata, or click on a highlighted county to see all photos and specimens in that county. (Specimens and photos lacking coordinates are not displayed on the map but are included in the county list.)

Umbilicaria arctica is listed as Recommended for listing, under review in Washington (WANHP). For some taxa of conservation concern, the precise locations are redacted, with specimens and photos displayed on the map as generalized rectangles aligned to a fixed grid; their precise locations may fall anywhere within the rectangle.