Oxalidales

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids I
Ordo: Oxalidales
Familiae: Brunelliaceae - Cephalotaceae - Connaraceae - Cunoniaceae - Elaeocarpaceae - Huaceae - Oxalidaceae

Name

Oxalidales Bercht. & J. Presl
Synonyms

Cephalotales
Connarales
Cunoniales
Elaeocarpales
Huales Doweld, Prosyllabus Tracheoph.: xxx. 2001

References

Stevens, P.F. 2001 onwards. Angiosperm Phylogeny Website. Version 14, July 2017 [and more or less continuously updated since]. Online. Reference page.
Doweld, A.B. 2001. Prosyllabus Tracheophytorum. Tentamen systematis plantarum vascularium (Tracheophyta) [Prosyllabus Tracheophytorum. Опыт системы сосудистых растений]. LXXX + 110 pp. Moscow: Geos. ISBN 5-89118-283-1. DJVU Reference page.
Tropicos.org 2014. Oxalidales. Missouri Botanical Garden. Published on the internet. Accessed: 2014 Jan. 25.

Vernacular names
العربية: حماضيات
català: Oxalidal
čeština: šťavelotvaré
dansk: Surkløver-ordenen
Deutsch: Sauerkleeartige
فارسی: شبدرترشک‌سانان
magyar: Madársóska-virágúak
日本語: カタバミ目
한국어: 괭이밥목
kurdî: Koma tirşengan
македонски: Киселицовидни
polski: Szczawikowce
русский: Кисличноцветные
slovenčina: kysličkotvaré
svenska: Harsyreordningen
ไทย: อันดับกระทืบยอด
українська: Квасеницецвіті
Tiếng Việt: Bộ Chua me đất
中文: 酢浆草目

Oxalidales is an order of flowering plants, included within the rosid subgroup of eudicots. Compound leaves are common in Oxalidales and the majority of the species in this order have five or six sepals and petals. The following families are typically placed here:[2]

Family Brunelliaceae
Family Cephalotaceae (Cephalotus follicularis)
Family Connaraceae
Family Cunoniaceae
Family Elaeocarpaceae
Family Huaceae
Family Oxalidaceae (wood sorrel family)

The family Cephalotaceae contains a single species, a pitcher plant found in Southwest Australia.

Under the Cronquist system, most of the above families were placed in the Rosales. The Oxalidaceae were placed in the Geraniales, and the Elaeocarpaceae split between the Malvales and Polygalales, in the latter case being treated as the Tremandraceae.
Phylogeny

The phylogeny of the Oxalidales shown below is adapted from the Angiosperm Phylogeny Group website.
 
 

	Malpighiales (outgroup)   Oxalidales   Huaceae         Connaraceae     Oxalidaceae         Cunoniaceae         Brunelliaceae     Cephalotaceae       Elaeocarpaceae

 
References

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.
Stephens, P.F. (2001 onwards). Angiosperm Phylogeny Website. Version 9, June 2008. http://www.mobot.org/MOBOT/Research/APweb/