Cactus

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Cacti
Scientific classification
Kingdom Plantae Division Magnoliophyta Class Magnoliopsida Order Caryophyllales Family Cactaceae
[[Genus ]]
Many, see text

Cacti or cactuses are succulent plants, well-known natives of desert areas in the Americas. They have also become naturalized to similar environments in other areas. An individual plant is called a cactus.

Like other succulents, cacti are well-adapted to life with little precipitation. Their leaves have evolved into needles, which in addition to allowing less water to evaporate than regular leaves, also defend the cactus against water-seeking animals. Their photosynthesis is carried out by their enlarged stems, which also store water. Unlike other succulents, the stem is the only part where this takes place.

Cacti come in many varieties in a wide range of shapes and sizes. Some grow to great heights. Some cactuses produce beautiful flowers, which like spines and branches arise from areoles. Many cactus species are night-blooming, as they are pollinated by nocturnal insects or small animals, principally moths and bats.

A number of cactus species are cultivated for use as houseplants, as well as for ornamental gardens. They often form part of xerophilic (dry) gardens in arid regions. Some cacti bear edible fruit.

Examples of cacti

• Barrel cactus
• Apple cactus
• Old man cactus
• Prickly pear
• Cholla
• Saguaro
• Holiday Cactus
• Night-blooming cereus (Selenicereus grandiflorus)
• Night blooming cereus
• Peyote
• Bird's-nest cactus
• Mammillaria

External link

• Cactus portal