This search feature groups cacti species by their growth habit (or form). If you are trying to
identify a particular cactus plant without knowing which genera to check, this will help you
narrow your search based on the way your cactus plant looks. Unfortunately, this is still only a rough guide and some
forms are typical of hundreds of species. Additionally, young plants often look quite different once they
are mature. Keep in mind, the forms below represent the mature habit of the cacti species they represent.
Remember also: All cacti are succulents, but not all succulents are cacti. If you are having a hard time identifying your
"cactus" plant, be sure to use the Cacti or Not? page to rule out
other succulents. You might be surprised when you find out that your very cactus-looking plant turns out not to be a
cactus at all.
Click on one of the growth forms below for more info.