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American Fern Society
Group of people interested in studying, growing, and preserving fern and fern-allies.
http://www.amerfernsoc.org/
Diagnosis for Crop Problems
Offered for sale. A multimedia software package that aids in teaching the process of diagnosing crop problems. Download a range of free disease scenarios.
http://www.diagnosis.co.nz/
Hardy Fern Foundation
Established to provide a comprehensive collection of the world's hardy ferns for display, evaluation, public education, and introduction to the horticultural community.
http://www.hardyferns.org/
Plant Hormones
A comprehensive site on plant hormones from the University of Bristol, UK.
http://www.plant-hormones.info/
Plant Physiology Online
An online companion to 'Plant Physiology, Third Edition' by Lincoln Taiz and Eduardo Zeiger. Includes Essays, Topics in Plant Physiology, Study Questions and Further Readings.
http://www.plantphys.net
Trees for Life Canada
Children's environmental education program for teachers and leaders. Teaches children about the importance of trees through the 'Grow-A-Tree' program.
http://www.trees4life.ca/