Iceland Moss

Identity

Common Name

Iceland Moss

Scientific Name

Cetraria islandica

Botanical Family

Parmeliaceae

Native Region

Arctic and subarctic regions of Europe and North America

Cultivation Regions

Iceland, Scandinavia, Northern regions (wild-harvested)

Plant Parts Used

Whole lichen (thallus)

Synonyms

Iceland Lichen, Cetraria

Caffeine Level

Caffeine Free

Not a moss but a fruticose lichen: a low clump of branching strap-like lobes with curled edges, grayish-green above with brownish undersides. Bitter and demulcent, long brewed for chest and stomach.

Historical Background

A survival food and medicine of Iceland, Scandinavia, and northern peoples, used for cough, chest complaints, and weak digestion; later adopted into European pharmacy as a demulcent and bitter tonic.

Earliest recorded uses: Cough, sore throat, loss of appetite, and as a nourishing food in scarcity.

Cultural significance: A symbol of northern resilience; ground into flour and brewed as a sustaining tea in times of famine.

1. Medieval

   Northern Europeans use Iceland moss for chest and digestive complaints.

2. Modern

   Listed in European pharmacopeias as a demulcent and bitter tonic.

Traditional Uses

These uses document historical traditions and do not imply proven effectiveness.

Flavor & Aroma

Aroma: Earthy, mineral, faintly green

Tea Information

Research Summary

Mucilage (lichenin) gives demulcent effects; usnic and other lichen acids have antimicrobial interest. Clinical evidence is limited.

Evidence levels reflect the currently available scientific literature and may change as new research emerges. Where evidence is limited or conflicting, this is stated plainly.

References & Sources