- Heliconia Society
- Learn about the activities and mission of this Puerto Rico based organization.
- North American Native Plant Society
- Information about the Society's plant rescues, upcoming events, affiliates, and seed exchanges. With a photo album and a message board.
- Plantlife
- Profile of an international wild plant conservation charity organization that works to protect wild plants and fungi.
- Useful Wild Plants, Inc.
- Features the Useful Wild Plants Project - an initiative that lays out a set of standards for studying plant uses throughout the world.
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