They grow in a nest-like clump with a lingulate leaf rosette and are usually epiphytic, growing in trees. An epiphyte is an organism that grows on the surface of a plant and derives its moisture and nutrients from the air, rain, or from debris accumulating around it.
Asplenium nidus forms large simple fronds that are light green, often crinkled, with a black midrib and exhibit circinate vernation.
"Circinate vernation is the manner in which a fern frond emerges. As the fern frond is formed, it is tightly curled so that the tender growing tip of the frond (and each subdivision of the frond) is protected within a coil." - Wikipedia
The nest traps fallen leaves and other debris, which eventually decompose to become humus. When it rains, large quantities of water are absorbed by the sponge of roots. In this way, the plant is self-sufficient in acquiring its food and water, so much so that it provides a habitat for the growth of other ferns and mosses, and even home for small animals. They are self sufficient, so they do not need nutrients from the host plants. Thus, the host plants are not harmed by their presence.
Bird's nest ferns thrives in warm, humid areas in partial to full shade. It dislikes direct sunlight. Hence, you usually find them 'sitting' on the nodes of branches. It is commonly seen here due to the high humidity in the weather.
Bird's nest ferns can thrive on the ground too. You can also grow them as house plants. They are inexpensive and easy to cultivate. But since their leaves are quite long and large, you need to have a big place.I read that bird nest ferns have been used in folk medicine for asthma, sores, and weakness. That would be handy as there are plenty of them around. Unfortunately, the article didn't say how they are used, or if there is any scientific proof to it.
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