LICHENS

In a 2009 survey, members of the California Lichen Society identified 81 lichen species in Claremont Canyon. Read their report in the History & Research section of this website. Most of the pictures in this album are of specimens collected during that survey. However, species names may have been updated to reflect current nomenclature. Species names used here are taken from the North American Lichen Checklist, Version 20, April 2015: http://www.ndsu.edu/pubweb/~esslinge/chcklst/chcklst7.htm. Viewers wanting more information about lichens may wish to contact the California Lichen Society (CALS): http://www.californialichens.org. Most of the specimens collected by Judith Robertson are now housed in the Herbarium at the University of California, Berkeley. In pictures where a ruler is shown for scale, the subdivisions are in millimeters.
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Acarospora socialis (CN: none) on Ridge Trail, Claremont Canyon, Oakland, CA on Sep. 26, 2009. Coll. and Det. by Judith Robertson. (No. 10413). Photo by Kay…
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Amandinea punctata (formerly Buellia punctata ) (CN: Tiny Button Lichen) on Drury Ct., Oakland, CA on June 14, 2009. Coll. and Det. by Judith Robertson…
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Arthonia atra (formerly Opegrapha atra ) (CN: none) in Garber Park, Oakland, CA on July 11, 2009. Coll. & Det. by Judith Robertson (#10330), CALS; photo by Kay…
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Aspicilia sp. in Claremont Canyon Regional Reserve, Oakland, CA on Sep. 26, 2009. Coll. and Genus Det. by Judith Robertson, CALS, #10414; photo by Kay Loughman.
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Aspicilia sp. in Claremont Canyon Regional Reserve, Oakland, CA on Sep. 26, 2009. Coll. and Genus Det. by Judith Robertson, CALS, #10418; photo by Kay Loughman
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Bacidia -type sp. on trail from Claremont Ave. to creek, Oakland, CA on Oct. 4, 2009. Coll. & Genus Det. by Judith Robertson, CALS, #10425; photo by Kay…
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Bacidia heterochroa (CN: none) on Ridge Trail above Claremont Canyon, Oakland, CA on Sep. 26, 2009. Coll. and Det. by Judith Robertson, CALS. (No. 10403); photo…
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Caloplaca sp. on Ridge Trail above Claremont Canyon, Oakland, CA on Sep. 26, 2012. Coll. & Genus Det. by Judith Robertson, CALS, #10412; photo by Kay Loughman.…
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Caloplaca sp. on Ridge Trail above Claremont Canyon, Oakland, CA on Sep. 26, 2009. Coll. & Genus Det. by Judith Robertson, CALS, #10416; photo by Kay Loughman.
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Caloplaca sp. on Ridge Trail above Claremont Canyon, Oakland, CA on Sep. 26, 2012. Coll. & Genus Det. by Judith Robertson, CALS, #10417; photo by Kay Loughman.…
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Caloplaca sp. on Ridge Trail above Claremont Canyon, Oakland, CA on Sep. 26, 2009. Coll. & Genus Det. by Judith Robertson, CALS, #10420; photo by Kay Loughman.…
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Caloplaca sp. on Ridge Trail above Claremont Canyon, Oakland, CA on Sep. 26, 2009. Coll. & Genus Det. by Judith Robertson, CALS, #10420; photo by Kay Loughman.…
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Caloplaca sp. on Ridge Trail above Claremont Canyon, Oakland, CA on Sep. 26, 2012. Coll. & Genus Det. by Judith Robertson, CALS, #10421; photo by Kay Loughman.…
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Candelaria concolor (CN: Candleflame lichen) on iron railing at Gravatt & Stephens, Oakland, CA on Dec. 6, 2009. Photo by Kay Loughman. ID supplied by Judy…
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Chrysothrix candelaris (CN: Gold Dust lichen) at entrance to Garber Park, Oakland, CA on Oct. 4, 2009. Coll. & Det. by J. Doell (No. CC 65); Photo by Kay…
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Cladonia chlorophaea (CN: Mealy pixie-cup), on Drury Ct. at Drury Rd., Oakland, CA on June 14, 2009. Coll. and Det. by Judith Robertson, CALS (#10297); photo by…
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Cladonia chlorophaea (CN: Mealy pixie-cup), on Drury Ct. at Drury Rd., Oakland, CA on June 14, 2009. Coll. and Det. by Judith Robertson, CALS (#10297); photo by…
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Cladonia coniocraea (CN: Common Powderhorn) on Drury Ct. at Drury Rd., Oakland, CA on June 14, 2009. Coll. and Det. by Judith Robertson, CALS, #10298; photo by…
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Cladonia macilenta (CN: Lipstick powderhorn) on Ridge Trail, Claremont Canyon, Oakland, CA on Sept. 12, 2009. Coll. by B. Hill; Det. by J. Doell (No. CC40);…
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Cladonia ochrochlora (CN: Smooth-footed Powderhorn) near Drury Court, Oakland, CA on June 13, 2009. Coll. and Det. by J. Doell (No.CC22); Photo by Kay Loughman.