Pteris ensiformis
Species of fern
Pteris ensiformis, commonly known as the silver lace fern or sword brake, is a species of fern in the family Pteridaceae. It is native to tropical and subtropical regions of Asia and the Pacific, where it grows in a variety of habitats, including forests and rocky areas.
Description[edit | edit source]
Pteris ensiformis is a medium-sized fern characterized by its distinctive fronds, which can grow up to 60 cm in length. The fronds are pinnate, with a central rachis and numerous leaflets arranged on either side. The leaflets are typically lanceolate and have a silvery-white variegation, which gives the plant its common name, silver lace fern.
The plant has a creeping rhizome, which allows it to spread and form dense clumps. The sori, or spore-producing structures, are located on the underside of the leaflets and are covered by a false indusium formed by the reflexed margin of the leaflet.
Distribution and habitat[edit | edit source]
Pteris ensiformis is widely distributed across Southeast Asia, including countries such as India, China, Indonesia, and the Philippines. It is also found in the Pacific Islands. The species thrives in humid, shaded environments, often growing on forest floors, along stream banks, and in rocky crevices.
Cultivation[edit | edit source]
Pteris ensiformis is a popular ornamental plant, valued for its attractive foliage. It is commonly grown indoors as a houseplant or in shaded garden areas. The plant prefers well-drained soil and high humidity, making it suitable for terrariums and greenhouses.
Propagation is typically achieved through division of the rhizomes or by spores. When grown indoors, it is important to maintain consistent moisture levels and avoid direct sunlight, which can scorch the delicate fronds.
Varieties[edit | edit source]
Several cultivars of Pteris ensiformis have been developed, with variations in leaf color and pattern. One notable cultivar is Pteris ensiformis 'Victoriae', which features more pronounced variegation and is often used in decorative plantings.
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External links[edit | edit source]
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Contributors: Prab R. Tumpati, MD
