Cacti
This gallery contains 168 pictures of plants in the Cactaceae family; these plants are commonly referred to as cacti. The majority of cacti are succulent (water-retaining) plants with numerous, sharp spines. Click on the sub-galleries to see pictures of and to learn more about specific types of cacti.
Individual Pictures (114)
![Echinopsis formosa](https://etc.usf.edu/clippix/pix/echinopsis-formosa_thumb.jpg)
![Espostoa nana (Cactus)](https://etc.usf.edu/clippix/pix/espostoa-nana-cactus_thumb.jpg)
![Expanse of Seagrass](https://etc.usf.edu/clippix/pix/expanse-of-seagrass_thumb.jpg)
![Feather Cactus](https://etc.usf.edu/clippix/pix/feather-cactus_thumb.jpg)
![Ferocactus piliferus](https://etc.usf.edu/clippix/pix/ferocactus-piliferus_thumb.jpg)
![Flowering Cacti with Multiple Spines](https://etc.usf.edu/clippix/pix/flowering-cacti-with-multiple-spines_thumb.jpg)
![Golden Barrel Cactus](https://etc.usf.edu/clippix/pix/golden-barrel-cactus-2_thumb.jpg)
![Golden Barrel Cactus Detail](https://etc.usf.edu/clippix/pix/golden-barrel-cactus-detail_thumb.jpg)
![Growth of Seagrass](https://etc.usf.edu/clippix/pix/growth-of-seagrass_thumb.jpg)
![Hairy Cactus in a Pot](https://etc.usf.edu/clippix/pix/hairy-cactus-in-a-pot_thumb.jpg)
![Hairy Cactus with Long Thorns](https://etc.usf.edu/clippix/pix/hairy-cactus-with-long-thorns_thumb.jpg)
![Hedge Cactus](https://etc.usf.edu/clippix/pix/hedge-cactus_thumb.jpg)
![Hexaedrop cactus](https://etc.usf.edu/clippix/pix/hexaedrop-cactus_thumb.jpg)
![Large Cactus in the Alamo Convento Garden](https://etc.usf.edu/clippix/pix/large-cactus-in-the-alamo-convento-garden_thumb.jpg)
![Low-Lying Cactus with Multiple Thorns](https://etc.usf.edu/clippix/pix/low-lying-cactus-with-multiple-thorns_thumb.jpg)
![Mamilliari vallenis](https://etc.usf.edu/clippix/pix/mamilliari-vallenis_thumb.jpg)
![`Matucana aureiflora`](https://etc.usf.edu/clippix/pix/matucana-aureiflora_thumb.jpg)
![Mexican Cactus](https://etc.usf.edu/clippix/pix/mexican-cactus_thumb.jpg)
![Notocactus Magnificus](https://etc.usf.edu/clippix/pix/notocactus-magnificus-2_thumb.jpg)
![Numerous Cacti in the Convento Courtyard of the Alamo Mission](https://etc.usf.edu/clippix/pix/numerous-cacti-in-the-convento-courtyard-of-the-alamo-mission_thumb.jpg)
![Old Man Cactus](https://etc.usf.edu/clippix/pix/old-man-cactus_thumb.jpg)
![Opuntia molesta](https://etc.usf.edu/clippix/pix/opuntia-molesta_thumb.jpg)
![Oreocereus trollii](https://etc.usf.edu/clippix/pix/oreocereus-trollii_thumb.jpg)
![Pachycereus](https://etc.usf.edu/clippix/pix/pachycereus_thumb.jpg)
![Pachycereus Close-Up](https://etc.usf.edu/clippix/pix/pachycereus-close-up_thumb.jpg)
![Pachycereus Detail](https://etc.usf.edu/clippix/pix/pachycereus-detail_thumb.jpg)
![Pachyphytum oviferum](https://etc.usf.edu/clippix/pix/pachyphytum-oviferum_thumb.jpg)
![Parodia Maassii](https://etc.usf.edu/clippix/pix/parodia-maassii_thumb.jpg)
![Parodia schwebsiana](https://etc.usf.edu/clippix/pix/parodia-schwebsiana_thumb.jpg)
![Parodia warasii](https://etc.usf.edu/clippix/pix/parodia-warasii_thumb.jpg)
![Partially Sunlit Barbed-Wire Cactus](https://etc.usf.edu/clippix/pix/partially-sunlit-barbed-wire-cactus_thumb.jpg)
!["Peruvian Old Man" Cactus](https://etc.usf.edu/clippix/pix/peruvian-old-man-cactus_thumb.jpg)
![Philosocereus Fulvilanatus](https://etc.usf.edu/clippix/pix/philosocereus-fulvilanatus_thumb.jpg)
![Philosocereus Fulvilanatus Side](https://etc.usf.edu/clippix/pix/philosocereus-fulvilanatus-side_thumb.jpg)
![Portion of a Cactus with Numerous Spine Clusters](https://etc.usf.edu/clippix/pix/portion-of-a-cactus-with-numerous-spine-clusters_thumb.jpg)
![Prickly Apple Growing in Front of a Rock](https://etc.usf.edu/clippix/pix/prickly-apple-growing-in-front-of-a-rock_thumb.jpg)
![Prickly Apple Spines Close-Up](https://etc.usf.edu/clippix/pix/prickly-apple-spines-close-up_thumb.jpg)
![Saguaro Cactus](https://etc.usf.edu/clippix/pix/saguaro-cactus_thumb.jpg)
![Saguaro Cactus Signpost](https://etc.usf.edu/clippix/pix/saguaro-cactus-signpost_thumb.jpg)
![Semaphore Cactus Buds](https://etc.usf.edu/clippix/pix/semaphore-cactus-buds_thumb.jpg)
![Short Cactus with Long, Ridged Spines](https://etc.usf.edu/clippix/pix/short-cactus-with-long-ridged-spines_thumb.jpg)
![Short Cactus with Prickly Paddles and a Yellow Flower](https://etc.usf.edu/clippix/pix/short-cactus-with-prickly-paddles-and-a-yellow-flower-2_thumb.jpg)
![Small Cactus Growing in Black Soil at the Rancho Los Alamitos Historic Ranch and Gardens](https://etc.usf.edu/clippix/pix/small-cactus-growing-in-black-soil-at-the-rancho-los-alamitos-historic-ranch-and-gardens_thumb.jpg)
![Small Cactus Studded with Thorns Growing Amongst Rocks at the Rancho Los Alamitos Historic Ranch and Gardens](https://etc.usf.edu/clippix/pix/small-cactus-studded-with-thorns-growing-amongst-rocks-at-the-rancho-los-alamitos-historic-ranch-and-gardens_thumb.jpg)
![Small Cactus with Long Thorns Along the Chihuanhuan Desert Trail of Big Bend National Park](https://etc.usf.edu/clippix/pix/small-cactus-with-long-thorns-along-the-chihuanhuan-desert-trail-of-big-bend-national-park_thumb.jpg)
![Small Cactus with Many Spines](https://etc.usf.edu/clippix/pix/small-cactus-with-many-spines_thumb.jpg)
![Small Cactus with Multiple, Long Thorns](https://etc.usf.edu/clippix/pix/small-cactus-with-multiple-long-thorns_thumb.jpg)
![Small Pink and Green Cacti with Long Spines](https://etc.usf.edu/clippix/pix/small-pink-and-green-cacti-with-long-spines_thumb.jpg)
![Small, Potted, Rounded Cacti with Many Prickles](https://etc.usf.edu/clippix/pix/small-potted-rounded-cacti-with-many-prickles_thumb.jpg)
![Snowball Cactus](https://etc.usf.edu/clippix/pix/snowball-cactus_thumb.jpg)