Opuntiads of the USA

(by Joe Shaw and Dave Ferguson)

Mission

Opuntia Species

Opuntia Country No. 1
Opuntia Country No. 2
Opuntia Country No. 3
Opuntia Country No. 4
Opuntia Country No. 5

Opuntia Country with
Daiv Freeman

Opuntia County, Big Bend

World Opuntiads

Peru Cactus Trip

Northern Patagonia Cactus Trip

Northern Patagonia Sights

Notes from the Editors

Culture Notes

Literature

Editorial Board

News

WWW Links

Agave Photos

WWW Links of Interest

WWW links come and go. Efforts are made to keep the list updated, but sometimes links disappear. This list is current as of January, 2011.

Favorite Links

Argentine Cacti, Willy Smith (very nice photos of South American opuntiads)
Figenkaktus og besl�gtede arter (temporarily offline, Martin Ravn Tversted, Northern Nursery)
TephroWeb, (great photos)
Benny's Hardy Cacti Page, (great photos)
SagtaCactus (great photos from Hugo)
Opuntia Photos, A. and F. Lohmüller (great photos)

Opuntia (and releated) eMail Groups

The Genus Opuntia, Yahoo eMail Group
Opuntia and Kin, Yahoo eMail Group
Too Cold For Cactus, Yahoo eMail Group

Opuntia Information Pages

Opuntia species, a comprehensive list with author citations
The Opuntioideae, The Botanical System of Plants
Article by Peter Felker concerning Opuntia as forage
Opuntipedia, by Mats Rolfson (good taxonomic information)
Glossary of Terms Related to Cacti, by Mark Faint
Information from UC Davis, Prickly Pear Crop Cultivation
The Ressurection of Opuntiod Genera, S. Jankalski article (nice review)
Genus Opuntia, Arizona-Sonora Desert Museum article
The Renowned Cactus Moth, Cactoblatiss Cactorum...H.G. Zimmerman et al.
Expanding Range of Cactoblastis cactorum ...Florida Entomology
Journal for the Professional Association for Cactus Development
Introduced Opuntia spp. In Southern Madagascar ..., Swed. Univ. Acad. Sci.
Profiles of Opuntia species, Treatment of the genus by USDA, NRCS
Opuntia, Treatment of the genus by the Flora of North America at efloras.org
Cylindropuntia, Treatment of the genus by the Flora of North America at efloras.org
Grusonia, Treatment of the genus by the Flora of North America at efloras.org
Opuntia Page (No. 1)(nice photos)
Opuntia Page (No. 2), Interesting approach for trying to identify an Opuntia species
Ecology of Opuntia stricta, Global Invasive Species
Ecology of Opuntia fragilis, Eric Ribbens
Opuntia arenaria (New Mexico rare plants)
Opuntia paraguayensis (evalutation of the name)

General Cactus Links

Cactaceae, University of Hawaii (Dr. Carr)
Texas Cacti, by the Hibbits family, great habitat photos of Texas cacti
The Family ‘Cactaceae’ Mammillaria, Neolloydia, Parodia (100s of photos)
Evolution and Phylogeny of Cacti, Dalhousie University
CactiGuide, online guide to identification of many cacti, with a forum too!
Peru Cacti (Home) Nice photos of Peru and plants in habitat (beautiful photos)

Cactus names, what do they mean?

The Etymology of Cacti Species is a great place to find out what names mean, and where the names came from (Latin, Greek, etc.). The CactiGuide makes it pretty easy to figure out that macrorhiza means something like "large root," but what about other terms such as basilaris or acanthodes; you'll find the answers there.