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Fern Diversity in San Diego County

with Dr. Jon Rebman, Curator of Botany at the San Diego Natural History Museum

With approximately 50 different fern and fern ally taxa documented to occur in San Diego County, this group is well represented locally, but not well known. Come join Dr. Jon Rebman as he presents this fern diversity and goes into depth on many of the taxa that grow in our region. He will also be showing various ferns that might possibly occur in our County, but have not yet been discovered here.

Jon P. Rebman, Ph.D. has been the Mary and Dallas Clark Endowed Chair/Curator of Botany at the San Diego Natural History Museum (SDNHM) since 1996. Dr. Rebman is a plant taxonomist and conducts extensive floristic research on the Baja California peninsula and in San Diego and Imperial Counties of California. He leads various field classes and botanical expeditions each year and is actively naming new plant species from the region. His primary research interests have centered on the systematics of the Cactus family in Baja California, especially the genera Cylindropuntia (chollas) and Opuntia (prickly-pears). However, Dr. Rebman also does a lot of general floristic research and he has co-published the new Annotated Checklist of the Vascular Plants of Baja California, Mexico and the most recent edition of the Checklist of the Vascular Plants of San Diego County.

He has over 25 years of field experience with surveying and documenting plants including rare and endangered species. As a field botanist, he is a very active collector of scientific specimens with his personal collections numbering over 35,000. He is the director of the San Diego County Plant Atlas project ( and identifies/verifies all of the new specimens (currently over 69,000) coming into the herbarium through this scientific endeavor. As the curator of the SD Herbarium at the SDNHM, he is in charge of this dried plant specimen collection that contains over 270,000 specimens dating back to the 1870s. Rebman published the newest edition of the Baja California Plant Field Guide with co-author Norman Roberts in 2012, and is working on a new bilingual, plant field guide for the Cape region of Baja California Sur. 


San Diego County Plant Atlas website: / Baja Flora website:

We will host our annual holiday potluck at the December meeting. Bring a dish to share.

6:30pm-7pm: There will be no NATIVES FOR NOVICES presentation this evening. Share and enjoy the potluck beginning at 6:30.

7:00pm-7:30pm: A time for discussion, camaraderie, visiting, and enjoying the sales table.


Earlier Event: December 12
Garden Committee Meeting
Later Event: January 2
Board Meeting