Web Directory

» Cactaceae
   Botanical characteristics of this family of plants with technical drawings of a number of species.
   http://delta-intkey.com/angio/www/cactacea.htm

» Cacti Guide
   Images of many cactus genera as planted specimens in collections or in natural habitat, with horticultural advice and a discussion forum.
   http://cactiguide.com/

» Cacti and Other Succulents
   Provides an overview of these drought tolerant plants and the convergent evolution which has resulted in there being similar looking plants from very different plant families.
   http://www.biology.ed.ac.uk/research/groups/jdeacon/desertecology/cacti.htm#top

» Cacti and Succulent Forum of Israel: Gallery
   Images of a large number of species.
   http://www.cacti.co.il/Gallery.aspx

» Cacti of Chile
   Photographs of several species including Austrocactus, Capiapoa, Echinopsis and Opuntia.
   http://www.chileflora.com/Florachilena/FloraEnglish/B_CACTUS_PLANTS.htm

» Cactus Museum
   Photos and notes for many species from a cactus grower in Tucson, Arizona.
   http://www.cactusmuseum.com

» Chihuahuan Desert Cacti
   Information and photographs of several species found in this region: Ariocarpus fissuratus, Epithelantha bokei, Echinocactus horizonthalonius, Ancistrocactus uncinatus, Echinocereus pectinatus and species of Echinocereus.
   http://www.biology.ed.ac.uk/research/groups/jdeacon/desertecology/chicacti.htm#top

» Close-up View of Several Cacti
   Photographic study by Brian Johnston of these plants, with many fine images of flowers and spines, both macroscopic and microscopic.
   http://www.microscopy-uk.org.uk/mag/artjan07/bj-cacti.html

» Keir Morse: Cactaceae
   Images of plants in the cactus family growing in the wild and in botanical gardens, taken by Keir Morse, botanist and photographer.
   http://www.keiriosity.com/gallery/main.php/v/plants/Cactaceae/

» Mark Faint's Cactus Page
   Detailed information on Neolloydia, Notocactus, and Turbinicarpus.
   http://www.mfaint.demon.co.uk/cactus/

» Plants of the Cactaceae Family
   Large image gallery of cacti cultivated in Phoenix, Arizona.
   http://www.desert-tropicals.com/Plants/Cactaceae/

» Pterocactus National Plant Collection
   List of the nine species, endemic to southwestern Argentina, with images and brief descriptions of four.
   http://www.manntaylor.com/ptero.html

» Rhipsalis, Lepismium, Hatiora, Schlumbergera
   Information on plants in these four genera, including species lists with photos, cultivation and propagation details, and links to vendors and collections.
   http://www.rhipsalis.com/

» The Cactaceae
   Description of the cactus family, with photos and short profiles of several representative species.
   http://www.botany.hawaii.edu/faculty/carr/cact.htm