Lycopodium clavatum
common club-moss, elk-moss, lycopode à massue, running club-moss, running-pine, stag's horn clubmoss
on substrate surface.
clustered, 0.6–1.2 cm diam., dominant main shoot with 3–6 branches mostly in lower 1/2.
few and like upright shoots;
annual bud constrictions abrupt, branchlets mostly spreading.
spreading, often somewhat ascending in distal 1/3 of branches, medium green, linear, 4–6 × 0.4–0.8 mm;
margins entire;
apex with narrow hair tip 2.5–4 mm.
3.5–12.5 cm, with remote pseudowhorls of appressed leaves, loosely branched into 2–5 alternate stalks, 0.5–0.8 cm.
2–5 on alternate stalks (if double, usually with stalks 5–8 mm), 15–25 × 3–6 mm.
1.5–2.5 mm, apex abruptly reduced to hair tip.
= 68.
Lycopodium clavatum
Plants found in eastern North America have been called Lycopodium clavatum var. clavatum; those in the western part of the range, which have been called L. clavatum var. integrifolium Goldie, are distinguished by early shedding of the characteristic hairs on the leaf tips.
Lycopodium dendroideum group
(Discussion copyrighted by Flora of North America; reprinted with permission.)
- Local floras:
BC, 
CA, 
OR, 
WA - Local Web sites: CalFlora, CalPhotos,
Flora NW, 
Go Botany, 
IL Wildflowers, 
MD Biodiversity, 
MI Flora, 
MN Wildflowers, 
PNW Herbaria 
WildflowerSearch
iNaturalist (observations)
USDA Plants Database- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
