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

Dioscoreaceae (sensu stricto)

• Borderea
• Dioscorea
• Epipetrum
• Rajania
• Stenomeris
• Tamus (often included in Dioscorea)

(Taccaceae)

• Tacca

(Trichopodaceae)

• Avetra
• Trichopus

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. 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. Magnolia Press. 261 (3): 201–217. doi:10.11646/phytotaxa.261.3.1.
5. Tropicos 2020.
6. Bouman 1995.

Bibliography

• Agardh, Carl Adolph (1825). "XI. Liliiflorae". Classes Plantarum (in Latin). Lund: Literis Berlingianis. p. 8.CS1 maint: ref=harv (link)
• 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.CS1 maint: ref=harv (link)
• 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, Taccaceae, Trichopodaceae in L. Watson and M. J. Dallwitz (1992 onwards), The families of flowering plants
• Monocot families (USDA)
• NCBI Taxonomy Browser
• Dioscoreaceae links, Taccaceae links, Trichopodaceae links at CSDL, Texas
• Dioscoreaceae Scratchpad in eMonocot