Welcome to the CALS website!

The California Lichen Society (CALS) seeks to promote the appreciation, conservation, and study of lichens. The focus of the Society is on California, but its interests include the entire western part of the continent. Anyone interested in California lichens may join the Society.


Find CALS here too:

  • Like bryophytes? Join in some fun -- SO BE FREE is March 27 - 30 in the San Bernardino Mountains of Southern California!

    Have questions, email Paul at paul.wilson@csun.edu.

    Posted By California Lichen Society

    March 02

  • Check out the silly lichen oratory video! Have one to share?

    Performed at Studio One in January 2014. Performers include Brenda Hillman, Evelyn Reilly, Frances Richard, Terry Taplin, Nick Cuzzi and Angie Hume

    Posted By California Lichen Society

    February 25

  • Annual meeting hike! Up close and personal with some amazing lichen and beautiful people.

    Posted By Elisha Dawn Hoyt

    February 01

  • HELP SPREAD THE WORD! Opportunities for Botanical and Conservation-based Workshops with the California Native Plant Society

    CNPS 2015 Conservation Conference: Celebrating 50 Years of Progress and Promise
    January 13-17, 2015 at the DoubleTree by Hilton San Jose

    Gain valuable skills and experience by attending pre-conference workshops. With 22 half-, full-, and two-day sessions covering a range of topics from plant surveying and restoration to digital resources and more, workshops are a great way to simultaneously build your resume and your professional network! You can sign up just for a workshop or a field trip, and you can receive a discount by being a CNPS member or by registering for the full conference. Botanical workshops of interest include: Intro to Rare Plant Surveys; Botanizing with Calflora; and CNDDB, RareFind 5, BIOS.

    Join over 1,000 conservation and native plant enthusiasts in San Jose! Attendees include scientists, conservationists, CNPS chapters, university professors and students, policymakers, professional and amateur botanists, landscaping professionals, and land-use planners from California and beyond.

    Posted By California Lichen Society

    December 25

  • Learn a little about lichens found in the canopy at Muir Woods National Monument.

    Lichens contribute such beautiful colors to our redwood forests, growing elegantly on trees, fallen logs, and rocks. Each lichen you see is actually a symbiotic partnership — algae or cyanobacteria wrapped up in a fungal package. Thanks to canopy biologists Rikke Reese Næsborg, Cameron Williams, Mar…

    Posted By California Lichen Society

    October 31

  • For my new lichen friends:


    You can download or view Macroscopic Solutions’ images in more detail by selecting any image and clicking the downward facing arrow in the lower-right corner of the image display screen. Three individuals of Macroscopic Solutions, LLC captured the images in this database collaboratively. Contact inf…

    Posted By Danny Newman

    October 21

  • There is still space...come explore lichens with CALS and David Arora! http://californialichens.org/2014/arorafieldtrip/

    David Arora, www.davidarora.com , has invited CALS members to his North Coast home the weekend of October 18/19 to explore, collect and ID lichens on his 40+ acre property overlooking the Pacific Ocean in Gualala, CA. He would like to end up with an inventory of the lichens on his property. The habi…

    Posted By California Lichen Society

    October 02

  • http://www.boredpanda.com/artist-uses-real-lichens-in-paintings/

    Kristina Zimbakova is an artist from Macedonia creating mixed-media paintings and drawings, wherein she applies real lichens, obtained from dry collections or harvested during personal forays. Lichens are a symbiotic association between a fungus and algae or cyanobacteria. In her artistic endeavors,…

    Posted By California Lichen Society

    September 22

  • FYI ! Thanks

    Posted By Joana Lage

    September 08

  • East Bay Science Cafe talks lichens!

    Informing and engaging the public about the diversity and depth of science at Cal & the resulting contributions to society.

    Posted By California Lichen Society

    August 26

  • This species looks familiar! It was the star of Febuary on our CALS 2014 calendar. http://phenomena.nationalgeographic.com/2014/06/30/one-lichen-species-is-actually-126-and-probably-more/

    One of the best ways of finding new species is to sequence the genes of existing ones. Often, scientists discover genetically distinct populations that count as species in their own right, hiding i...

    Posted By California Lichen Society

    August 17

  • I'd like to know if the new book "A Field Guide to California Lichens" would be very useful to a Washington state resident. I'll probably get it eventually, but my budget forces me to prioritize. I know there can be wide latitudinal distribution and am curious whether the book describes range outside of California.

    Posted By Craig Sondergaard

    June 05

  • Did you know you could use lichens to dye fibers interesting colors?! Learn more at this field trip:

    10:00 – 2:00, May 3, 2014. Meet at Bear Valley in front of the Point Reyes National Seashore Visitor Center for a walk led by CALS President Shelly Benson and CALS Secretary Sarah Minnick that will focus on distinguishing dye lichens. We will review the basics about lichens and how to use them as d…

    Posted By California Lichen Society

    April 27

  • And stay for CAL Day on Saturday, April 12 where you'll find the CALS display in the Jepson Herbarium and wonderful talks, presentations, and interactivities throughout the campus. http://calday.berkeley.edu/

    Posted By California Lichen Society

    April 10

  • Friday, April 11 the Botany Lunch series at the Jepson Herbarium on the UC Berkeley campus will feature Kerry Knudsen and the Lichens of Joshua Tree National Park, details are here: http://ucjeps.berkeley.edu/news/botanylunch/

    Jan. 24 Nancy Morin (Vice President for Business and Development, Flora of North America; Research Associate, University & Jepson Herbaria)Quandaries in Campanulaceae phylogenies

    Posted By California Lichen Society

    April 10

  • BioBlitzers learn about the central cord in Usnea, the rubber band lichen.

    Posted By California Lichen Society

    March 30

  • Check out this fantastic workshop by Dr. Peter Nelson on Pannariaceae!

    A few seats left for Pannariaceae workshop with Dr. Peter Nelson at SOU in Ashland, Oregon April 17-19 see link here: http://home.comcast.net/~nwlichens/events.htm

    Posted By Hanaa Misurata

    March 27

  • Bioblitz SF is this Friday and Saturday! Scientists and citizens unite to document the biodiversity of the Golden Gate National Recreation area and educate the students about its incredible range. CALS could use your help, message us here to volunteer!

    Posted By California Lichen Society

    March 24

  • Peltigera gowardii, a fantastic hydro lichen that is worth conserving!

    Poulsen, B. and T. Carlberg. 2007. Peltigera hydrothyrea, sponsorship for the CALS Conservation Committee. Bulletin of the California Lichen Society 14(1): 15-18.

    Posted By Hanaa Misurata

    March 06

  • Volunteers needed for Bioblitz 2014 in the Golden Gate National Recreation Area! Message us here or email christine at californialichens dot com to be part of an incredible collaboration. http://www.nationalgeographic.com/explorers/projects/bioblitz/golden-gate-california-2014/

    Join the California Lichen Society at this two-day event where volunteer scientists, naturalists, families, and students work together to explore, discover, and document the living creatures in the park. *We’re seeking volunteers* to staff our booth at BioBlitz base camp at 1199 East Beach at Crissy Field in San Francisco where the young audience can earn their degree at the “Biodiversity University”! Meanwhile, our own Shelly Benson and Tom Carlberg will be leading groups around the Golden Gate National Recreation Area to appreciate and document the lichen diversity.

    Posted By California Lichen Society

    February 20

  • The 19th Annual SoBeFree is happening March 28 ‐ 31, 2014 at the Santa Cruz Mountains near Boulder Creek! Come join the fun!

    Posted By Hanaa Misurata

    February 11

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    Posted By Eric Peterson

    January 25

  • Save the Date - Lichen Celebration! Jan. 25, 2014

    Posted By California Lichen Society

    January 24

  • Save the Date - Lichen Celebration! Jan. 25, 2014

    Posted By California Lichen Society

    January 11

  • Can you recommend a book for ID-ing lichen in the San Bernardino mountains?

    Posted By Nancy Lightowler Caruso

    September 26

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