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San Francisco Bay Estuary: A Key to Identifying the Seeds of Wetland Species
Contains photographs of seeds of common vascular plants found in the tidal marshes of the San Francisco Bay Estuary. Includes "both fresh and saltwater plants. ... Species are grouped alphabetically by family and can be viewed individually or as family." Many entries include a brief description of morphology, distribution, and habitat. From the Department of Geography, University of California, Berkeley.
http://geography.berkeley.edu/ProjectsResources/SF_Estuary/Main_Page.html

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