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Lycopodium (from Ancient Greek lykos, wolf and podion, diminutive of pous, foot) [2] is a genus of clubmosses, also known as ground pines or creeping cedars, [3] in the family Lycopodiaceae. Two very different circumscriptions of the genus are in use.
Lycopodium powder is a yellow-tan dust-like powder, consisting of the dry spores of clubmoss plants, or various fern relatives. When it is mixed with air, the spores are highly flammable and are used to create dust explosions as theatrical special effects.
Lycopodium flabelliforme var. ambiguum Victorin Diphasiastrum digitatum is known as groundcedar, running cedar or crowsfoot , along with other members of its genus, but the common name fan clubmoss can be used to refer to it specifically.
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Lycopodium complanatum L. Stachygynandrum complanatum (L.) C. Presl Diphasiastrum complanatum , [ 4 ] common names groundcedar , [ 5 ] creeping jenny , or northern running-pine , is a species of clubmoss native to dry coniferous forests in colder northerly parts of the world.
Lycopodium L. sensu Øllgaard (1987) Lycopodioideae is a subfamily in the family Lycopodiaceae in the Pteridophyte Phylogeny Group classification of 2016 (PPG I). [ 1 ] It is equivalent to a broad circumscription of the genus Lycopodium in other classifications.
The species was first described in 1807 by Jacques Labillardière, as Lycopodium densum. However, the name had already been used for a different species, so this name is illegitimate. [2] Hence when Werner Rothmaler in 1944 placed the species in the genus Lepidotis as Lepidotis densa, this was the first legitimate use of the epithet. [8]