If you know of any other sites which would fit here, please email me with the details.
PalmWeb - the authoritative source of technical information about palms.
E-Monocot - an online resource for monocot plants.
The Cycad Pages - the definitive cycad site.
Trebrown - complete list of the world's palms [Arecaceae].
Trebrown - complete list of all the world's cycads [Cycadae].
Palm and Cycad Societies
The Virtual Palm and Cycad Encyclopedia (Palm & Cycad Societies of Florida) A massive collection of images, and articles.
The Palm Society Of Antilles and Guyana - French only but it has a huge collection of images of rarely seen South American palms.
The Cycad Society of South Africa A very professional site, and the place to find out about South African cycads.
Lundkvist Palm Garden in Hawai (USA) - a website dedicated to a spectacular 5 acre garden with more than 5000 individual palms representing approximately 625 different species.
Lynn McKamey's Gateway to Unusual Palms & Exotic Plants (USA) - comprehensive articles about Rhapis palms, and Cycas revoluta.
Cold Climate Palm Sites
Cool Climate Palms and Ferns (Australia)
The Cool Tropics - THE site for cold tolerance information.
Cold-Rating DataBase - Minimum temperatures for palms, cycads, and tropicals.
Highland Palms (USA)
Plant a Tropical Island Paradise - an excellent site for British palm enthusiasts. (UK)
The Cycad Pages (The definitive cycad site).
Cycad Talk A Cycad Forum and Exchange
Cycad Friends A South African-based non-profit organization dedicated to cycad propagation.
Cycad Gardens (Qld) - Australia's finest collection of cycads, specialising in Encephalartos.
Palms for Brisbane (Qld) - a retail palm nursery with a very wide range, and developing a library of usefull articles on sub-tropical palms
Utopia Palms and Cycads (Qld) - specializing in New Guinea and Irian Jaya palms - mostly wholesale rare palms and cycads, seeds and plants - very informative with photographs.
Price's Palm Plantation - wholesale grower of palms and cycads.
Eastern Nurseries (Qld) - wholesale nursery dealing in Cycads, Rhapis excelsa, and limited numbers of a variety of rare Japanese Miniature Green and variegated Rhapis Palms.
Palm Plantations Of Australia - specialising in the Oil Palm (Elaeis guineensis).
Impact Plants (NSW) - specialising in tropical plants at Empire Bay on the NSW Central Coast.
Cycad International (NT) - Australia's largest cycad nursery.
Gary's Nursery (NC) - grower of Cold Hardy Palms in the Central Coastal Plain of NC
Nickel Palm Nursery (California)
South Coast Palms (California)
Doug Eckel's Palms, Cycads, And Platyceriums (California)
Jungle Music Palms & Cycads (Southern California)
Deluca Farms (Florida)
MB Palms (Florida) - rare palms and cycads.
The Cycad Jungle (Florida)
Floribunda Palms & Exotics (Hawai)
South Seas Palm Company - specialising in Kentia Palms (Michigan)
Rare Palm Seeds (UK)
Trebrown Nurseries (UK) - Palm trees, exotic plants and seeds.
Athelas Plants (UK)
Palme Per Paket (Germany)
La Palmeraie (Holland)
Garden Palms (Holland)
Prince Of Palms (Spain) - specialising in rare and exotic palms (plants and seeds)
Deluca Farms (Italy)
Golden Lotus (Thailand)
Palms and Tropicals Online (South Africa)
Azafady - a charitable organisation working on a combination of environmental and humanitarian projects in Madagascar.
Permaculture Plants Sustainable Agriculture Research Institute - (Australia)
Tours for Garden, Nature and Botany Enthusiasts - (Australia)
Lyon Arboretum at the University of Hawaii