Dioscoreaceae

Dioscoreaceae (/ˌdaɪəˌskɔːriˈeɪsii/) is a family of monocotyledonous flowering plants, with about 715 known species in nine genera.^[4] The best-known member of the family is the yam (some species of Dioscorea).

Dioscoreaceae
Dioscorea balcanica
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Order:	Dioscoreales
Family:	Dioscoreaceae R.Br.[1][2]
Genera
See text
Synonyms
Dioscoreae R.Br.[1] Dioscorinae[3]

The APG system (1998) and APG II system (2003) both place it in the order Dioscoreales, in the clade monocots. However, the circumscription changed in the APG II system, with the 2003 system expanded to include the plants that in the 1998 system were treated in the families Taccaceae and Trichopodaceae.

Taxonomy

The Dioscoreaceae were first described by Brown in 1810 as Dioscoreae,^[1][5] and alternatively referred to as Dioscorinae.^[3]

Subdivision

The circumscription of Dioscoreaceae has expanded over the years. For instance when Stenomeridaceae, as Stenomeris was also included in Dioscoreaceae as subfamily Stenomeridoideae together with Avetra, the remaining four genera were grouped in subfamily Dioscoreoideae, the two being distinguished by the presence of bisexual and unisexual flowers respectively.^[6]

Genera

As of September 2022^[update], Plants of the World Online accepted four genera in the family:^[7]

Dioscoreaceae	Dioscorea Plum. ex L. (including Epipetrum Phil., Rajania L.) Stenomeris Planch. Tacca J.R.Forst. & G.Forst. Trichopus Gaertn.

References

1. Brown 1810, p. 294.
2. Angiosperm Phylogeny Group (2009). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III". Botanical Journal of the Linnean Society. 161 (2): 105–121. doi:10.1111/j.1095-8339.2009.00996.x. hdl:10654/18083. Archived from the original (PDF) on 2017-05-25. Retrieved 2013-06-26.
3. Agardh 1825.
4. Christenhusz, M. J. M.; Byng, J. W. (2016). "The number of known plants species in the world and its annual increase". Phytotaxa. 261 (3). Magnolia Press: 201–217. doi:10.11646/phytotaxa.261.3.1.
5. Tropicos 2020.
6. Bouman 1995.
7. "Dioscoreaceae R.Br". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2022-09-22.

Bibliography

• Agardh, Carl Adolph (1825). "XI. Liliiflorae". Classes Plantarum (in Latin). Lund: Literis Berlingianis. p. 8.
• Bouman, F. Seed Structure and Systematics in Dioscoreales. pp. 139–156., In Rudall et al (1995)
• Brown, Robert (1810). Prodromus Florae Novae Hollandiae et Insulae Van Diemen (in Latin). London: Richard Taylor & Son.
• Rudall, P.J.; Cribb, P.J.; Cutler, D.F.; Humphries, C.J., eds. (1995). Monocotyledons: systematics and evolution (Proceedings of the International Symposium on Monocotyledons: Systematics and Evolution, Kew 1993). Kew: Royal Botanic Gardens. ISBN 978-0-947643-85-0. Retrieved 14 January 2014.
• "Dioscoreaceae R. Br". Tropicos. Missouri Botanical Garden. 2020. Retrieved 5 January 2020.

External links

• Dioscoreaceae Archived 2007-10-13 at the Wayback Machine, Taccaceae Archived 2016-03-03 at the Wayback Machine, Trichopodaceae in L. Watson and M. J. Dallwitz (1992 onwards), The families of flowering plants
• Monocot families (USDA)
• NCBI Taxonomy Browser
• Dioscoreaceae links Archived 2008-10-12 at the Wayback Machine, Taccaceae links Archived 2008-05-13 at the Wayback Machine, Trichopodaceae links Archived 2008-05-13 at the Wayback Machine at CSDL, Texas
• Dioscoreaceae Scratchpad in eMonocot Archived 2019-10-06 at the Wayback Machine
• Media related to Dioscoreaceae at Wikimedia Commons
• Data related to Dioscoreaceae at Wikispecies