logo to home
climate
Climate
adapting
Adapt
plants
Plants
animals
Animals
resources
Links
Home > Plants > Cacti
Species List | Site Map | Email | Copyright
MAJOR TYPES OF CACTI
Cactus Family | Cactus Types | Opuntia
 
columnar cactusesCOLUMNAR CACTI: Have cylindrical stems, with ribs (see pleats) running from bottom to top, that are at least 10x taller than wide. Includes species in the genera Carnegiea (Saguaro), Lophocereus (Senita), Packycereus (Cardon), Stenocereus (Organpipe Cactus), and others).
barrel cactusBARREL CACTI: Have cylindrical stems, with ribs (see pleats) running from bottom to top, that are less than 10x taller than wide and a have a diameter that is greater than about 5". Flowers grow from top of stem. Includes species in the following genera Ferocactus (Fishhook Barrel) and Echinocactus (Many-headed Barrel).
hedgehog cactusHEDGEHOG CACTI: Have cylindrical stems, with ribs (see pleats) running from bottom to top, that are less than 10x taller than wide and have a diameter that is less than about 5". Species occuring here are generally less than 12" tall. Flowers grow from sides of stem. Spines are not hooked (as are many pincushion cactuses). Includes species in the genus Echinocereus (Hedgehog Cactus).
pincushion cactusPINCUSHION CACTI: Have unbranched cylindrical stems, without ribs (see pleats) running from bottom to top. Species occuring here are less than 6" tall. Central spines are often hooked (unlike hedgehog cactuses). Includes species in the genus Mammillaria (Fishhook Pincushion Cactus).
cholla cactusCHOLLA CACTI: Have branched, cylindrical stems with jointed segments. Includes species in the genus Opuntia (Chainfruit, Christmas, Staghorn, and Teddybear Cholla). See The Opuntia Difference for more.
prickly pearPRICKLY PEAR CACTI: Have flattened, pad-like stems. Includes species in the genus Opuntia (Prickly Pear). See The Opuntia Difference for more.