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Cyclostigma

{{Short description|Extinct genus of spore-bearing plants}}

{{About|the genus of extinct lycophytes|other plant genera|#Taxonomy}}

{{Automatic taxobox

|fossil_range = {{Geological range/linked|Emsian}}

|taxon = Cyclostigma

|authority = Haught., nom. cons.

}}

Cyclostigma is a genus of extinct plants belonging to the Lycopodiopsida (lycopsids).

Taxonomy

Cyclostigma Haught. was first used by Samuel Haughton in 1859 for the type species C. kiltorkense. The name Cyclostigma has been used for a genus no fewer than four times. Three are synonyms:

  • Cyclostigma Hochst. ex Endl. is a synonym of Voacanga Thouars. This is the oldest name, dating from 1842, and so would normally have priority but Cyclostigma Haught. has been conserved against it.
  • Cyclostigma Klotzsch is a synonym of Croton L.
  • Cyclostigma Phil. is a synonym of Leptoglossis Benth.

Hao and Xue in 2013 listed Cyclostigma as a lycopsid.

References

{{Reflist|refs=

{{Citation |last1=Hao |first1=Shougang |last2=Xue |first2=Jinzhuang |date=2013 |title=The early Devonian Posongchong flora of Yunnan: a contribution to an understanding of the evolution and early diversification of vascular plants |location=Beijing |publisher=Science Press |isbn=978-7-03-036616-0 |url=https://www.researchgate.net/publication/269875285 |accessdate=2019-10-25 |page=329 |name-list-style=amp }}

{{Citation |title=Search for 'Cyclostigma' |website=International Code of Nomenclature for algae, fungi, and plants: Appendices I–VII |publisher=Smithsonian National Museum of Natural History |url=https://naturalhistory2.si.edu/botany/codes-proposals/ |accessdate=2019-10-31 }}

{{citation |title=Cyclostigma Phil. |work=Plants of the World Online |publisher=Royal Botanic Gardens, Kew |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:38331-1 |accessdate=2019-10-31 }}

{{citation |title=Cyclostigma Klotzsch |work=Plants of the World Online |publisher=Royal Botanic Gardens, Kew |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:322019-2 |accessdate=2019-10-31 }}

{{citation |title=Cyclostigma Hochst. ex Endl. |work=Plants of the World Online |publisher=Royal Botanic Gardens, Kew |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:30078353-2 |accessdate=2019-10-31 }}

}}

{{Taxonbar|from=Q85754904}}

Category:Prehistoric lycophytes

Category:Prehistoric lycophyte genera

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