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cactus
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saguaro cacti coastal cacti fishhook cactus organ-pipe cactus rose cactus peyote Dutchman's pipe cactus Santa Fe Island desert ecosystem prickly pear
For Students
Golden rainbow cactus (Echinocereus dasyacanthus), a hedgehog cactus, growing in the desert of southwestern Texas.
cactus summary
Quizzes
Venus's-flytrap. Venus's-flytrap (Dionaea muscipula) one of the best known of the meat-eating plants. Carnivorous plant, Venus flytrap, Venus fly trap
Plants: From Cute to Carnivorous
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Frost. Frost point. Hoarfrost. Winter. Ice. Blackberry plant. Thorn. Hoarfrost on blackberry thorns.
Botanical Barbarity: 9 Plant Defense Mechanisms
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Leaves are silhouetted against an orange and yellow sky with twilight. (plants, petioles, nature)
Do Plants Emit Oxygen and Carbon Dioxide at Night?
Plant seedlings emerging from rich fertile soil
Do Plants Feel Pain?
Saguaro cacti dot the Sonoran Desert landscape at Saguaro National Park, Arizona. Formerly Saguaro National Monument cactus
Can You Drink Water from a Cactus?
Discover
Shah Jahan. Taj Mahal. Mughal architecture. Emperor Shah Jahan fifth Mughal Emperor (reigned 1628-1658) India, Himachal Pradesh, Basohli or Jammu and Kashmir, Mankot, circa 1690 Drawings; Opaque watercolor, gold, and ink on paper (see notes)
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Chapter 4 pg 42 - Chapter header of The Adventures of Tom Sawyer by Mark Twain. Published in 1884 by The American Publishing Company
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Ice Sledge Hockey, Hockey Canada Cup, USA (left) vs Canada, 2009. UBC Thunderbird Arena, Vancouver, BC, competition site for Olympic ice hockey and Paralympic ice sledge hockey. Vancouver 2010 Olympic and Paralympic Winter Games, Vancouver Olympics
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bird. mourning dove. pigeon and dove. Mourning Dove (Zenaida macroura) family Columbidae.
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Small, white rat (genus Rattus) on a glass table. (rodent, laboratory, experiment)
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King Cobra snake in Malaysia. (reptile)
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cactus: Facts & Related Content

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Facts

Also Known As cacti • cactuses • Cactaceae

Photos and Videos

saguaro cacti
coastal cacti
fishhook cactus
organ-pipe cactus
rose cactus
peyote
Dutchman's pipe cactus
Santa Fe Island
desert ecosystem
prickly pear
Study how desert plants adapt and survive harsh conditions and how cacti provide sustenance for desert animals
How leaves are adapted to their environments
Behold Saguaro National Park plant life. such as the saguaro cactus, unique to the Sonoran Desert
See All Videos and Images →

Related Topics and References

Topics
Dig Deeper: More Articles That Discuss This Topic

Key People

George Engelmann
German botanist and physician

Related Quizzes and Features

Quiz
Venus's-flytrap. Venus's-flytrap (Dionaea muscipula) one of the best known of the meat-eating plants. Carnivorous plant, Venus flytrap, Venus fly trap
Plants: From Cute to Carnivorous
Demystified
Plant seedlings emerging from rich fertile soil
Do Plants Feel Pain?
Saguaro cacti dot the Sonoran Desert landscape at Saguaro National Park, Arizona. Formerly Saguaro National Monument cactus
Can You Drink Water from a Cactus?