Here are some sites to start with for Identifying of Plants, Fungi, Seaweed, etc.

http://www.eattheweeds.com/

http://northernbushcraft.com/

 http://americanmushrooms.com/

http://pendiva.com/seaweed/

 http://www.danielwinkler.com/

 http://www.wildcrafting.net/

http://www.natureskills.com/

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And another link for more localized general info:       http://mapofsaltspring.com/