Microsorum Linguiforme

The Tongue Leaf Fern

What Is Microsorum linguiforme?

Microsorum linguiforme is a tropical fern known for its long, narrow fronds that resemble the shape of a tongue. The name linguiforme means “tongue-shaped,” describing its simple and elongated leaf form.

This fern grows naturally in warm, humid forest environments, often as an epiphyte attached to trees or rocks. It is not a true aquatic plant and should not be fully submerged long-term. It grows best in moist, well-draining media with good airflow and humidity.

Its clean, strap-like fronds give it a minimal and structured look compared to finely divided ferns.

Simple and elegant, Microsorum linguiforme is ideal for collectors who prefer bold, narrow foliage.

How It Grows

This fern grows from a creeping rhizome that spreads across the surface of the pot or mount. The rhizome should remain above the soil and not be buried.

Growth is moderate under warm and humid conditions.

The Leaves (Fronds)

The fronds are long and strap-like.

• Color: medium to deep green

• Surface: smooth with slight natural gloss

• Shape: narrow and elongated, tongue-shaped

The simple leaf form gives it a clean, modern appearance.

Light Needs

Prefers low to medium indirect light.

• Avoid direct sunlight

• Soft light supports healthy frond growth

Too much light may cause leaf damage.

Water & Growing Conditions

• Keep the growing medium lightly moist

• Use airy, well-draining mix (bark, moss, or fern mix)

• Prefers moderate to high humidity

• Ideal temperature: 20–28°C

Avoid waterlogging and do not bury the rhizome.

Growing Environment

Best suited for:

• Terrariums

• Mounted displays

• Indoor tropical collections

• Humid greenhouse setups

Not suitable for long-term submerged aquarium use.

Care Level

Low to medium care.

• Suitable for growers with basic experience

• Fairly adaptable

• Moderate growth rate

Handling Note

Keep the rhizome exposed and ensure good airflow. With stable humidity and consistent moisture, Microsorum linguiforme will maintain its long, elegant fronds and structured forest appearance.