Werkgroep Masdevallia
- Study group in the Netherlands for South American genuses Dracula and Masdevallia. Listing of species with native altitude ranges, and information on native habitat and culture. [Dutch/English]
- http://www.orchidnet.nl/masgroep/indexgb.html

Orchidaceae at the Nationaal Herbarium Nederland
- Orchid related publications of the NHN including CD-ROMs and photographs of over 200 species found in Malesia.
- http://www.nationaalherbarium.nl/pubs/orchidweb/

The World of Orchid
- Here you can read regularly updated articles written by orchid enthusiasts on the taxonomy and culture of these interesting plants.
- http://orchidtip.blogspot.com/

Terrestrial Orchids of North America
- In situ photographs of by Gordon Bowbrick.
- http://www.canada-gardens.com/northamericanorchids/

Description of Orchidaceae
- Habit and leaf form; Anatomy; Morphology; Physiology; Biochemistry; Geography.
- http://delta-intkey.com/angio/www/orchidac.htm

Native Orchid Conservation - Manitoba
- A non-profit organization whose purpose is to protect unique mini-ecosystems and their plant communities. Includes photo gallery of orchids in Manitoba, Canada.
- http://www.nativeorchid.org/

Orchid Research Newsletter
- Twice-yearly newsletter published by the Kew Royal Botanic Gardens, available on the web in Word and PDF formats. Upcoming conferences, recent nomenclature references, book reviews, and news from correspondents.
- http://www.rbgkew.org.uk/herbarium/orchid/

The Sobralia Pages
- Resource for sobralia and related genuses, including taxonomical references, photos and description of species, distribution maps, and bibliography.
- http://sobralia.autrevie.com/

Estonian Orchids
- Features list of species with photos and descriptions as well as their distribution in this country. Includes information on the Estonian Orchid Protection Club.
- http://www.orhidee.ee/

Taxonomy of the Orchid Family
- Follows the classification system of Robert Louis Dressler, which is widely accepted by botanists and growers.
- http://www.wordiq.com/definition/Taxonomy_of_the_orchid_family

Bibliorchidea
- Online subscriber database with thousands of references to orchidacaea literature. The service also offers ordering of hardcopies of selected texts.
- http://www.bibliorchidea.net/

Orchid Species Photographs
- A large alphabetized photo gallery by Eric Hunt.
- http://www.orchidphotos.org/

Orchids of the United States
- Information, images, and range maps for all species native to the US. Arranged by state and scientific name.
- http://www.orchids.org/ooc/na_orchids/us_orchids_java.shtml

OrchidMania: Orchid Species of the World
- Online orchid encyclopedia with information and images arranged by genus and species.
- http://www.orchids.org/species/

Knapp's Orchid Pictures
- Large collection of photographs of many different species. [Javascript required]
- http://www.orchid-focus.de/orchid_e.htm

Keir's Botanical Photo Archive - Orchidaceae
- Images from the US.
- http://www.keiriosity.com/orchidaceae/orchidaceae.html

Orchids of Cilento (Southern Italy)
- More than 200 photographs of the wild orchids of Cilento National Park in southern Italy.
- http://digilander.libero.it/robomont/

Spider Orchids
- Links to photographs of the genus Caladenia.
- http://spiderorchid.com/caladenia/

NativeOrchids
- Email list covering wild native orchids, especially in the Northern Hemisphere.
- http://groups.yahoo.com/group/NativeOrchids/

Papua New Guinea Orchid News
- Includes genus descriptions, drawings, photos, and links.
- http://www.orchidspng.com/

Native Orchids
- Information on wild orchids in Denmark and links.
- http://www.nativeorchid.net/

The Orchidaceae
- Brief details of the family, and descriptions and photographs of a range of its members.
- http://www.botany.hawaii.edu/faculty/carr/orchid.htm