General:
Common Name: The Rock-olive Lichens. Describes the habitat and colour of the upper surface.
Minute, stratified foliose lichens (in BC), umbilicate, rotund to subrotund, corticate above and below, sorediate (in BC), usually without distinct lobes, thallus averaging to 3–10 mm across, rather thick. Upper surface pale olivegrey, with down-rolled margins. Lower surface pale brown, lacking rhizines. Photobiont blue-green.
Apothecia are unknown in the B.C. material.
Over vertical rock.
Notes: Peltula, with approximately 18 species worldwide, occurs primarily at temperate latitudes in arid regions. Of the 15 species reported for North America, only one is known to occur in B.C.

Reactions:
All spot tests negative.

Contents:
No lichen substances reported.

Source:  Lichens of British Columbia

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Illustration By:  Trevor Goward

Synonyms and Alternate Names:
Heppia euploca (Ach.) Vain.
Heppia guepinii (Delise) Nyl.
Heppia polyphylla de Lesd.