Epiphyte

Epiphyte is a type of plant that grows on another plant, but unlike parasites, epiphytes derive their moisture and nutrients from the air, rain, and sometimes from debris accumulating around it. Epiphytes are not directly harmful to the plants they grow on. They are found in the temperate zone (e.g., many mosses, liverworts, lichens, and algae) and in the tropics (e.g., many ferns, cacti, orchids, and bromeliads).

Characteristics

Epiphytes are characterized by their ability to grow on other plants for physical support. They are not rooted in soil and do not take nutrients from their host plants. Instead, they have specialized structures for obtaining water and nutrients from the air and rain. Some epiphytes have roots that cling to the host plant, while others have structures called holdfasts that grip the host.

Types of Epiphytes

There are several types of epiphytes, including:

• Bromeliads: These are a family of monocot flowering plants native to the tropical Americas. Many bromeliads are able to store water in a structure formed by their tightly-overlapping leaf bases.

• Orchids: Orchids are a diverse and widespread family of flowering plants, with blooms that are often colorful and fragrant. Many orchids are epiphytes, particularly those native to tropical regions.

• Ferns: Some ferns are epiphytes, growing on the surface of other plants. They are particularly common in tropical rainforests.

• Mosses: Mosses are small, non-vascular plants that typically form dense green clumps or mats, often in damp or shady locations. Some mosses are epiphytes, growing on the bark of trees.

• Lichens: Lichens are composite organisms consisting of a fungus and a photosynthetic partner growing together in a symbiotic relationship. Many lichens are epiphytes.

Ecological Importance

Epiphytes play an important role in the ecosystem. They provide food and habitat for a variety of animals. In tropical rainforests, epiphytes provide a significant proportion of the canopy foliage and are important for the cycling of nutrients within the forest.

See Also

• Parasitic plant
• Symbiosis
• Tropical rainforest

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  Tillandsia bourgaei
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  Epiphytes in Dominica
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  Epiphytic orchid
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  Clinging root of epiphyte
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  Heavy epiphyte growth on kelp stipe
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  Notheia on Hormosira
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  Cyanobacteria in symbiosis with a diatom
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  Pyrophyllon cross-section