Lycopodium hickeyi

Lycopodium hickeyi
Scientific classification
Kingdom: Plantae
Division: Lycopodiophyta
Class: Lycopodiopsida
Order: Lycopodiales
Family: Lycopodiaceae
Genus: Lycopodium
Species: L. hickeyi
Binomial name
Lycopodium hickeyi
W.H.Wagner, Beitel & R.C.Moran 1989
Synonyms[1][2]
  • Lycopodium obscurum var. isophyllum Hickey 1977
  • Dendrolycopodium hickeyi (W.H. Wagner, Beitel & R.C. Moran) A. Haine

Lycopodium hickeyi, Hickey's tree club-moss[2] or Pennsylvania clubmoss,[3] is North American a species of clubmoss in the family Lycopodiaceae. It is native to eastern and Central Canada (from Newfoundland to Ontario with isolated populations in Saskatchewan) and the eastern and north-central United States (from Maine west to Minnesota and south as far as Tennessee and North Carolina).[4]

Lycopodium hickeyi is very similar to L. obscurum except for a few minor but consistent features: side shoots round rather than flat in cross section, leaves all the same size.[2]

The oldest for the taxon is Lycopodium obscurum var. isophyllum.[5][6] In elevating the plants from varietal level to species level, Wagner et al. opted to forgo the common (but not mandatory) custom of using the old varietal epithet as the new species epithet. They chose instead the name Lycopodium hickeyi while acknowledging the old varietal name as synonym.[7]

References

  1. ↑ Tropicos, Lycopodium hickeyi W.H. Wagner, Beitel & R.C. Moran
  2. 1 2 3 Flora of North America, Lycopodium hickeyi W. H. Wagner, Beitel, & R. C. Moran, 1989. Hickey's tree club-moss, lycopode de Hickey
  3. ↑ "Lycopodium hickeyi". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 27 July 2015.
  4. ↑ Biota of North America Program 2014 state-level distribution map, Dendrolycopodium hickeyi
  5. ↑ Hickey, Ralph James. 1977. American Fern Journal 67: 47-48 diagnosis in Latin, description and figure captions in English
  6. ↑ Hickey, Ralph James. 1977. American Fern Journal 67: 46 line drawings, figures 4-6 in center
  7. ↑ Wagner, Warren Herbert, Beitel, Joseph M., & Moran, Robbin Craig. 1989. American Fern Journal 79: 119–121


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