Pseudolycopodium

Pseudolycopodium is a genus of lycophyte in the family Lycopodiaceae with only one species, Pseudolycopodium densum, known as the bushy clubmoss. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the genus is placed in the subfamily Lycopodioideae.[4] Some sources do not recognize the genus, sinking it into Lycopodium.[5] Pseudolycopodium densum is native to Australia, the North Island of New Zealand and New Caledonia.[1][2] It is a spore-bearing vascular plant and grows up to a metre high. It is found in a wide variety of situations, often in high rainfall areas on sandy soils.[6][7]

Pseudolycopodium
Growing near the Gloucester River, Barrington Tops, Australia
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Lycophytes
Class: Lycopodiopsida
Order: Lycopodiales
Family: Lycopodiaceae
Genus: Pseudolycopodium
Holub[1]
Species:
P. densum
Binomial name
Pseudolycopodium densum
(Rothm.) Holub[1]
Synonyms[2]
  • Lepidotis densa Rothm.
  • Lycopodium densum Labill., nom. illeg.[3]
  • Lycopodium deuterodensum Herter

Taxonomy

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.[3] 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] In 1983, Josef Holub placed the species in his genus Pseudolycopodium. This placement is accepted in the Pteridophyte Phylogeny Group classification of 2016 (PPG I),[4] and by the Checklist of Ferns and Lycophytes of the World as of December 2019.[1] Other sources retain the species in its original genus, Lycopodium, where the legitimate name is Lycopodium deuterodensum Herter.[2]

References
  1. Hassler, Michael & Schmitt, Bernd (November 2019), "Pseudolycopodium densum", Checklist of Ferns and Lycophytes of the World, 8.11, retrieved 8 December 2019
  2. "Lycopodium deuterodensum Herter", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 8 December 2019
  3. "Lycopodium densum Labill.", The International Plant Names Index, retrieved 8 December 2019
  4. PPG I (2016), "A community-derived classification for extant lycophytes and ferns", Journal of Systematics and Evolution, 54 (6): 563–603, doi:10.1111/jse.12229
  5. "Pseudodiphasium Holub", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 8 December 2019
  6. "Lycopodium deuterodensum Herter". PlantNet - New South Wales Flora Online. Retrieved 9 December 2019.
  7. "Lycopodium deuterodensum Herter". Atlas of Living Australia. Retrieved 9 December 2019.
  8. "Lepidotis densa Rothm.", The International Plant Names Index, retrieved 8 December 2019
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