Page author: Crow Vecchio
Caloplaca cerina

Distribution: Washington; Reported in all continental US states with the exceptions of Nevada, Louisiana and Florida; Canada.

Habitat: In open woodlands.

Substrate: Common on bark, esp. of poplar and elm.

Conservation Status: Not of concern


Thallus blue-grey to whitish, smooth to areolate. Apothecia bright yellow, to 2 mm in diameter, sometimes slightly pruinose, with raised grey margin.

Accepted Name:
Caloplaca cerina (Hedwig) Th. Fr.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Caloplaca cerina in the Consortium of Pacific Northwest Herbaria database.

CalPhotos: Caloplaca cerina photos.

USDA Plants: Caloplaca cerina information.

2 photographs:
Group by