SafePlants

Microsorum pteropus: The Versatile Java Fern

Microsorum pteropus, commonly known as Java fern, is a popular and adaptable aquatic fern prized for its ease of care and distinctive appearance.

Considerations for Pets

• Java fern is often described as a "safe plant," suggesting it is generally considered non-toxic to aquatic life.

Nomenclature and Taxonomy

• Scientific Name: Microsorum pteropus
• Common Name: Java fern
• Synonyms: Polypodium pteropus, Colysis pteropus (Blume) Bosman, Colysis tridactyla (Wall. ex Hook.)
• Family: Polypodiaceae

Distribution and Habitat

• Native to tropical and subtropical regions of Asia.
• Found in various environments, including growing on rocks or wood in rivers and streams.

Morphological Characteristics

• Grows to a height of 15-30 cm.
• Characterized by rhizomes instead of roots, from which it grows.
• Highly variable plant with several geographic varieties and cultivated selections.
• Some varieties have narrow leaves (e.g., Microsorum pteropus 'Narrow', also sold as Microsorum "Minor").

Cultivation and Varieties

• Prefers not to be buried in the substrate; best attached to wood or rocks.
• Easy to grow and undemanding, making it suitable for beginners.
• Several cultivated varieties exist, including:
  • 'Trident': A green, narrow-leaved, smaller form.
  • 'Windelov': A variety with finely branched, flared leaf tips, named after the founder of Tropica.

Aquarium Use

• A popular aquarium plant known for its ability to withstand a wide range of water parameters.
• Suitable for low-tech setups with low light, CO2, and fertilizer requirements.
• Often used in midground and background arrangements.

Quirky Facts

• The genus name "Microsorum" means "small sori," referring to the small clusters of sporangia (sori) on the underside of the fronds.