Hornwort

Ceratophyllum demersum

Hornworts are small, ancient plants that grow in damp places like soil, rocks, or tree bark. They don't have roots but help enrich the soil where they live.

Habitat: Wetlands

Appearance

The Hornwort is a small, flat plant, often appearing as a dark green, irregularly shaped patch clinging to moist soil or rocks. It distinguishes itself with slender, horn-like capsules (sporophytes) that grow upright from its base, releasing tiny spores.

KingdomPlantaePhylumAnthocerotophytaClassAnthocerotopsidaOrderAnthocerotalesFamilyAnthocerotaceaeGenusAnthoceros

Hornwort

Interesting facts

Hornworts are among Earth's oldest land plants, dating back over 400 million years!

Hornworts have unique internal cavities within their plant body, sometimes filled with helpful microscopic algae!

Their horn-shaped capsules can grow for weeks or even months, slowly releasing countless tiny spores!

Unlike most plants, each hornwort cell usually contains just one large, bowl-shaped chloroplast!

Special abilities

Hornwort can partner with tiny cyanobacteria living inside its body, which helps it capture vital nitrogen from the air for growth.

Hornwort has a single large chloroplast in each cell, unlike most plants, which efficiently captures sunlight for energy.

Hornwort can release its spores from a unique horn-shaped capsule that continuously grows, allowing it to spread offspring widely.

Measurements & details

Height: 1-5 cm
Spread: 2-10 cm
Edible: No
Toxicity: None
Lifecycle: Perennial

Ecological connections

symbiotic with

Nostoc cyanobacterium

Nostoc punctiforme

Fixes nitrogen for hornwort's growth.

eaten by

Spanish slug

Arion vulgaris

Feeds on hornwort thalli.

eaten by

Green springtail

Isotoma viridis

Grazes on hornwort surfaces.

Traits

Nonvascular

This trait characterizes plants lacking specialized vascular tissues (xylem and phloem) for transporting water and nutrients.

Spore Producing

Spore-producing organisms reproduce by releasing small, often single-celled, reproductive units called spores.

Ancient Lineage

This trait signifies organisms belonging to a very old evolutionary group with ancestors dating back millions of years.

Wetland

This habitat trait identifies species found in wetlands, which are areas of land saturated with water, either permanently or seasonally, including marshes, swamps, and bogs.