Common Name: Blistered Rock Tripe
Brown smooth to verrucose umbilicate lichen on exposed rocks with raised black button-like apothecia.
Regularity: Regularly occurring
Northern temperate to boreal and Australia.
UPPER SURFACE: light to dark brown, smooth to strongly verrucose or blistered
LOWER SURFACE: brown to black, verrucose-papillate
APOTHECIA: black, roundish, raised or adnate, gyrose
CHEMISTRY: medulla C+ and KC+ red (gyrophoric, lecanoric and umbilicaric acids)
Only Umbilicaria species bear any resemblance to this species:
|U. phaea||apothecia are sunken or flush with surface and angular, thallus smoother|
|U. nylanderiana||with sooty black patches of single-celled thalloconidia on the otherwise smooth lower surface|
|U. polyphylla||apothecia rare, multi-cellular thalloconidia covering patches of the smooth to papillose lower surface|
|U. arctica||paler lower surface, primarily arctic|
Exposed siliceous rocks, that often become covered with snow during the winter. Higher elevation in lower latitudes, making it all the way into Mexico.
National NatureServe Conservation Status
Rounded National Status Rank: NNR - Unranked
NatureServe Conservation Status
Rounded Global Status Rank: G4 - Apparently Secure
Reasons: This lichen species is widespread and is the most common member of the genus in the Pacific Northwest. It occurs throughout the Pacific Northwest except on the coast (McCune and Geiser 1997).
EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.
To request an improvement, please leave a comment on the page. Thank you!