Observation 9637: Lecanora hagenii (Ach.) Ach.
When: 2008-08-18
Herbarium specimen reported

Notes: This is one of the most pollution tolerant lichens known. It is the only one that grows in quantity in urban Pasadena. I’ve had the ID verified by Curtis Bjork. Look for it at the base of certain species of trees (magnolia, date palm, camphor, shamel ash, but not oak) where misted regularly by sprinklers (look for the green stain of algae). The ash in the yard of 874 S Oakland, the camphors on the north side of Fillmore between Euclid and Los Robles, and the date palms east of the entrance to Huntington Hospital are all particularly good places to see it. The apothecia are generally less than 1 mm wide.

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Created: 2008-08-19 02:01:23 CDT (-0400)
Last modified: 2008-08-19 02:01:23 CDT (-0400)
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