Garden Web Glossary of Botanical Terms contains 4400 terms relating to botany, and gardening
Hannelotte's Garden
Franz Hadacek's Alpines and Bulbs
Rock Garden Plant Database
Gentian Breeding at Tynebank - by Ian McNaughton
Tropicos® - Image list for gentianaceae
CalPhotos - Images from gentians
Jozef Lemmens
Botanik im Bild - Bild-Datenbank der Wildpflanzen Österreichs
Gentian Research Network - by Dr. Lena Struwe
Flora of China
Metagentiana, a new genus of Gentianaceae - by Ting Nong Ho, Shi Long Chen, and Shang Wu Liu
Planto: Gentianacea - by M. Kleikamp
Hela rotsplanten - by H. Laporte
Garden of Gunhild and Thorkild Poulsen
Enzian Böttger - Stollberg/E. - by Reinhard Böttger contains images from gentians and other alpines. He has also plants for sale.
Plantphoto - Chinese website about drawings from gentians and also interesting pictures
Galleria della Flora italiana
A Czech website about gentians.

Books

"Dem Enzian auf der Spur" von Helmut Halbmayr 1988 Wien

"Enzianen und Glockenblumen" von Fritz Köhlein 1986
    ISBN 3-8001-6187-7

"The Genus Gentians" by Josef Halda 1997
    ISBN 80-901846-6-9

"A Worldwide Monograph of Gentiana" by Ho Ting-nong and Lin Shang-wu 2001
    ISBN 7-03-009190-6

"Genziane d’Europa" by Egidio Anchisi, Andriano Bernini, Emanuela Piaggi and Francesco Polani. It is a book in Italien, 2nd rev. ed. 2010. 230 col. photogr. 33 col. figs. 13 distrib. maps. 7 tabs. 344 p. Paper bd.
As reviewed by Christopher Grey-Wilson in June 2011 The Alpine Gardener Bulletin -
"This attractive book, published in Italian ( but don't let that put you off) is a must for the alpine gardener's bookshelf...This rather a long review but this is an important work, deserving of such consideration. The text is detailed, informative and well presented and the book is lavishly illustrated by numerous good sized photographs of mostly good quality..."

Alpine Societies

The Alpine Garden Society
The Alpine Garden Society is England's premier club for enthusiasts of Alpine and Rock Garden Plants. Worth visiting.

The Scottish Rock Garden Club
The SRGC is the largest horticultural society in Scotland. The Scottish Rock Garden Club was founded in 1933 by a small group of enthusiasts who were interested in promoting the cultivation of alpine and rock garden plants.

The North American Rock Garden Society
The NARGS is for gardening enthusiasts interested in alpine, saxatile, and low-growing perennials.

Quebec Alpine & Rock Garden Society
The purpose of QARGS is to encourage Quebec gardeners, both novice or experienced, to become familiar with alpine flora and all that it encompasses.

NRV
Dutch Alpine Garden Society
The NRV is a society with members in The Netherlands as well as abroad. They have a great interest in small plants.

VRV
Dutch Alpine Society (Vlaamse Rotsplanten Vereniging)
The VRV is a society with members in Belgium as well as abroad.

Other Plant Genera

http://www.hepatica.eu
Welcome to our homepage for Hepatica. Here you can get seeds, read articles, get informations on growing, propagation, diseases etc.
The site is under construction and will be regularly updated. Wishes for seeds and questions may be directed to guth@webspeed.dk

http://www.alpines.be/androsaceworld/
This website has been designed for people who love Androsace species. It is far from complete: I hope to gradually build it up, adding photographs as they come along. Due to a busy schedule, I might not always manage as much time for the site as I'd want to. Thank you for taking patience with occasional slow-downs.
Many photographs shown here will be of Androsaces growing in the wild. Others will feature garden-grown specimens.
Jozef Lemmens

http://www.primulaworld.com
This website is for people interested in identifying species Primulas. In September, 2000 Pam Eveleigh started with a photo gallery showing plants growing in the wild and in cultivation. Now Pam is adding more pictures to help explain the key differences between species.

http://www.edgewoodgardens.net/articles/trillium.html
This website is for people interested in identifying species Trillium. The garden of John Lonsdale is approximately 1.7 acres in area in Exton (USA). There are a lot of interesting plants.

http://www.trilliums.co.uk
This website is designed for those with an interest in the trillium genus or even a passionate love of them. George Carlton Denton holds a Trillium Collection. It is held in Leeds, Yorkshire, England.

http://www.trilliumresearch.org/
Harold Homes and his wife Brenda are "Trillium lovers". On this website you will find a lot of information about Trillium.

http://www.per-bangsgaard.dk/trillium-prove.html
Per Bangsgaard has a big collection of Trillium, Cypripedium, Hepatica and Rhododendron.

http://www.kalle-k.dk/english1.htm
A beautiful garden in Denmark with a lot of interesting plants. Hepatica, Helleborus, Trillium, Lilium, Cypripedium, Adonis, Primula etc