Public Description of Umbilicaria hyperborea (Ach.) Hoffm.

Title: Public Description (Default)
Name: Umbilicaria hyperborea (Ach.) Hoffm.
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Description status: Reviewed
 (Latest review: 2010-04-14 18:15:32 PDT (-0700) by nathan)

Taxonomic Classification:

Domain: Eukarya
Kingdom: Fungi
Phylum: Ascomycota
Class: Lecanoromycetes
Order: Umbilicariales
Family: Umbilicariaceae

General Description:

Common Name: Blistered Rock Tripe

Brown smooth to verrucose umbilicate lichen on exposed rocks with raised black button-like apothecia.

Diagnostic Description:

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)


Northern temperate to boreal and Australia.


Exposed siliceous rocks, that often become covered with snow during the winter. Higher elevation in lower latitudes, making it all the way into Mexico.

Look Alikes:

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

Description author: Jason Hollinger (Request Authorship Credit)
Description editor: Nathan Wilson

Created: 2008-10-23 15:33:07 PDT (-0700) by Jason Hollinger (jason)
Last modified: 2010-04-14 18:15:32 PDT (-0700) by Nathan Wilson (nathan)
Viewed: 91 times, last viewed: 2017-03-12 16:15:43 PDT (-0700)