Useful Links

Cacti and succulent identification -- www.desert-tropicals.com
 
Cacti identification -- cactiguide.com

Cactus and succulent plant picture gallery (what is Mammillaria huitzilopochtli?)-- www.cactus-art.biz/gallery/Photo_gallery_abc_cactus.htm

Major types of cactus -- wc.pima.edu/~bfiero/tucsonecology/plants/cactus_types.htm
 
Common names of cacti -- https://cactiguide.com/name_search

Shmuelo Matityahu cactus adventure -- www.maticacti.com

Cacti & Succulent Blog from Australia -- https://blog.plantsacrossmelbourne.com.au/cacti-succulents-beginners/

Central Arizona CSS -- www.centralarizonacactus.org
 
Chihuahuan Desert Plants -- museum2.utep.edu/chih/gardens/list/species.htm

Cactus Museum -- www.cactusmuseum.com
 
Cactus Museum links to cactus-related websites  -- www.cactusmuseum.com/links.asp
 
Euphorbias -- https://www.euphorbia-international.org/news/news.htm
 
 Info on cactus moth -- www.invasivespeciesinfo.gov/terrestrial/invertebrates/cactus-moth