Prickly Tree-Clubmoss

Dendrolycopodium dendroideum

''Dendrolycopodium dendroideum'', synonym ''Lycopodium dendroideum'', known as tree groundpine, is a North American species of clubmoss. It is part of a complex of species colloquially known as groundpine, which taxa were formerly lumped into the species ''Lycopodium obscurum''. The species is native to Russia and also to the colder parts of North America . The genus ''Dendrolycopodium'' is accepted in the Pteridophyte Phylogeny Group classification of 2016 , but not in other classifications, which submerge the genus in ''Lycopodium''.

''Dendrolycopodium dendroideum'' prefers humus-rich, sandy, moist but not completely saturated soils. It is very similar to ''D. obscurum'' except for side shoots that are round in cross-section rather than flat, and having leaves all the same size.
Prickly Tree-Clubmoss (Dendrolycopodium dendroideum) Growing at the forested edge of a brook.
https://www.jungledragon.com/image/124799/prickly_tree-clubmoss_dendrolycopodium_dendroideum.html
 Dendrolycopodium dendroideum,Fall,Geotagged,United States

Uses

Historically, this and other related clubmosses had been collected for decorative Christmas greenery. Overharvesting clubmosses destroys the slow growing, increasingly rare plant. The spore of this species was also collected as Lycopodium powder for use in early photography, although this was not the preferred species for the purpose.

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Status: Unknown
EX EW CR EN VU NT LC
Taxonomy
KingdomPlantae
DivisionLycopodiophyta
ClassLycopodiopsida
OrderLycopodiales
FamilyLycopodiaceae
GenusDendrolycopodium
SpeciesD. dendroideum