 |
Wollemi Pine (Popularity:  )
http://www.wollemipine.com/
Facts, photos, and news about the Wollemia.
|
 |
Arboretum de Villardebelle (Popularity: )
http://www.pinetum.org/
Includes photographs and information on conifers from around the world, gymnosperm taxonomy, and scientific articles.
|
 |
Gymnosperm Database (Popularity: )
http://www.conifers.org/
Basic information (sometimes only a name) for all species and higher-ranked taxa of the gymnosperms, including conifers, cycads, and their ...
|
 |
Crassulaceae.com (Popularity: )
http://www.crassulaceae.com/
Botanical database and photo gallery of the American Crassulaceae. In English and German.
|
 |
Passiflora Society International (Popularity: )
http://www.passiflora.org/
An organization for enthusiasts to exchange information, obtain help with plant identification, and to locate seeds and plants.
|
 |
University of Nijmegen: Botanical and Experimental Garden (Popularity: )
http://www.bgard.science.ru.nl/
Holds the Dutch national collection of plants in the Solanaceae family. Includes checklist and images.
|
 |
American Begonia Society (Popularity: )
http://www.begonias.org/
Includes a collection of images and descriptions.
|
 |
Lithops Info (Popularity: )
http://www.lithops.info/
tips, links, books, cultivation, gallery
|
 |
Peperomia.net (Popularity: )
http://www.peperomia.net/
Detailed information, photos, and horticulture of Peperomia species.
|
 |
Cactus Museum (Popularity: )
http://www.cactusmuseum.com/
Photos and notes for many species from a cactus grower in Tucson, Arizona.
|
 |
Cacti Guide (Popularity: )
http://cactiguide.com/
Images of many genera, mostly of small, planted specimens.
|
 |
Royal Paulownia Tree (Paulownia tomentosa) (Popularity: )
http://www.paulownia.org/
Site promoting the use of Paulownia.
|
 |
American Paulownia Association (Popularity: )
http://www.paulowniatrees.org/
Promotes the advancement of Paulownia as a forest crop in the United States. Photos, the tree's ecology and uses, organization ...
|
 |
Paulownia Worldwide (Popularity: )
http://www.paulowniatrees.com.au/
Australian plantation consultant provides extensive information on the tree, its history, cultivation, uses, and markets.
|
 |
The Genus Astrophytum (Popularity: )
http://www.astrobase.de
Monograph of the cactus genus Astrophytum. Contains information in English and Deutsch.
|
 |
Echinocereus Online (Popularity: )
http://www.echinocereus.de/
An electronic magazine about the genus, in German and English. Includes many images.
|
 |
Mammillarias.net (Popularity: )
http://www.mammillarias.net/
Forum, comprehensive photo gallery, and collection database. In French and English.
|
 |
Saving the American Elm (Popularity: )
http://www.elmpost.org/
Information about efforts to restore Ulmus americana to the landscape by developing and planting new disease resistant varieties. Includes photos ...
|
 |
Gesneriads (Popularity: )
http://www.gesneriads.com/
Small image gallery and horticultural information.
|
 |
Australian Native Hibiscus (Popularity: )
http://www.hibiscus.org
Information about some hibiscus and related plants.
|
|
