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Stiff clubmoss

Lycopodium annotinum

Also called Interrupted clubmoss, Bristly Clubmoss, Stiff Ground Pine

Stiff clubmoss
Photo: Bernd Haynold, CC BY 2.5

Stiff clubmoss is a low, evergreen clubmoss that creeps along the ground on horizontal stems, native to cold forests of North America, Asia and Europe. It is a spore plant, not a flowering plant, and is usually grown in cool, moist woodland conditions.

Family
Lycopodiaceae (Lycopodi family)
Grows as
Perennial
Light
Part shade, Shade
Water
Keep the soil consistently moist but not waterlogged, as it naturally grows in damp forest floors.
Soil
Acidic, humus-rich, moist woodland soil or a peaty mix.
Temperature
Tolerates cold climates well; suited to cool temperate conditions and hardy in cold winters.
How easy
Hard
Native range
Europe to Russian Far East, N. America
Climate
temperate

About

Spinulum annotinum, synonym Lycopodium annotinum, known as interrupted club-moss, or stiff clubmoss, is a species of clubmoss native to forests of the colder parts of North America (Greenland, Saint Pierre and Miquelon, all 10 provinces and all 3 territories of Canada, Alaska, and mountains of the contiguous United States), as well as Asia (China, Russia, Japan, Korea, Nepal, Assam), and most of Europe. It is an evergreen perennial pteridophyte. The genus Spinulum is accepted in the Pteridophyte Phylogeny Group classification of 2016 (PPG I), but not in other classifications, which submerge the genus in Lycopodium.

Uses

In Finnish traditional medicine Spinulum annotinum has been used as a remedy for rickets. The plant's spore dust has also been used as medicine for rashes and inflammation. The spore dust or lycopodium powder has also been used as 'fly gunpowder' (kärpäsruuti in Finnish) due to the oily and easily flammable nature of the spores.

Text excerpted from the Wikipedia article Lycopodium annotinum by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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