A.  Fern and Cycad Societies

• AMERICAN FERN SOCIETY
• BRITISH PTERIDOLOGICAL SOCIETY
• THE CYCAD SOCIETY
• AUSTIN FERN AND CYCAD SOCIETY
• SOUTHWESTERN FERN SOCIETY
• SAN DIEGO FERN SOCIETY
• L. A. INTERNATIONAL FERN SOCIETY
• PALM AND CYCAD SOCIETY OF FLORIDA
• INTERNATIONAL DIRECTORY OF BOTANICAL SOCIETIES
• FERN SOCIETY OF VICTORIA
• FERN SOCIETY OF SOUTH AUSTRALIA

B. Botanical  Gardens
FAIRCHILD TROPICAL GARDENS

• MISSOURI BOTANICAL GARDEN
• SAN ANTONIO BOTANICAL GARDEN
• MARIE SELBY BOTANICAL GARDEN
• ZILKER BOTANICAL GARDEN

• FOLIAGE GARDENS
• PALM HAMMOCK ORCHID ESTATE
• PLANT DELIGHTS NURSERY
• CLASSIC GROUNDCOVERS
• FERNS garden and landscape design centre
• Rhapsis Gardens
• Rare Plants

• ALTAVISTA
• DOGPILE*
• GOOGLE
• HOTBOT
• INFOSEEK
• IXQUICK
• METACRAWLER*
• NORTHERN LIGHTS
• SAVVY SEARCH*

• UNIVERSITY OF HAWAII CAMPUS PLANTS
• TEXAS A & M  IMAGE GALLERY

• ASCOG FERNERY
• BOTANICAL LATIN TRANSLATOR
• BOTANY.COM
• Gartentechnik  Katalog
• CENTER FOR PLANT DIVERSITY RESEARCH
• FERNS OF THE CANBERRA REGION
• GARDENING LAUNCH PAD
• HARDY TREE FERNS PAGE
• THE ISOETES PAGE
• KNOUSE'S FERN SITE
• PETER RICHARDSON'S PAGE
• CYCADS:ENDANGERED LIVING FOSSILS
• VERCORS(IN FRENCH)
• GENUSTOR
• KEITH'S FERN PAGE