Haircap Moss

Polytrichum commune

Haircap moss is a soft, green plant that grows in damp places like forests and wetlands. It looks like a tiny forest on the ground, providing homes for small insects and creatures.

Habitat: Forests, Wetlands

Appearance

The Haircap Moss has stiff, upright stems covered in tiny, needle-like deep green leaves. It often forms dense, carpet-like mats from which reddish-brown, boxy spore capsules rise on thin stalks, making it stand taller than many other mosses.

KingdomPlantaePhylumBryophytaClassPolytrichopsidaOrderPolytrichalesFamilyPolytrichaceaeGenusPolytrichum

Haircap Moss

Interesting facts

Early settlers sometimes used its strong stems to make small brooms!

Haircap moss can grow much taller than most other mosses, sometimes over a foot!

Its tiny rhizoids anchor it, unlike true roots of bigger plants!

Look closely! Its tiny leaves have ribs that boost sunlight capture.

Special abilities

Haircap Moss can move water internally using specialized cells, like tiny straws, helping it stay hydrated in dry conditions.

Haircap Moss produces spore capsules on stalks that launch tiny spores into the wind for reproduction and spreading.

Haircap Moss has dense, interwoven mats that bind soil particles, helping prevent erosion and stabilize the ground.

Measurements & details

Height: 5-30 cm
Spread: 10-50 cm
Edible: No
Toxicity: None
Lifecycle: Perennial
Pollination Method: Wind

Ecological connections

eaten by

Leopard Slug

Limax maximus

Slugs graze on its green leaves.

shelters

Banded Springtail

Orchesella cincta

Springtails hide and feed within its dense mat.

symbiotic with

Star Jelly Cyanobacterium

Nostoc commune

Cyanobacteria fix nitrogen, benefiting the moss.

Traits

Nonvascular

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

Evergreen

Evergreen plants retain their foliage throughout the year, never shedding all their leaves at once.

Medicinal

Medicinal plants possess chemical compounds that can be used for therapeutic purposes to treat illnesses or maintain health.

Forest

Forest habitats are terrestrial environments dominated by dense tree cover, supporting a high diversity of plant and animal life.

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.