Concise hierarchy

(Kingdom) Plantae - (Phylum) Tracheophyta - (Class) Magnoliopsida - (Order) Zygophyllales

Subsequent entries

Guajacum (Genus) L. (1753)

Current position

Zygophyllales (Order) Link (1829)

Ref: D.J. Mabberley, 2017: App. (p. 1002).

Alternative positions

eurosids I ([unranked])	Ref: APG II, 2003: 418.
rosids ([unranked])	Ref: APG, 1998: 540.
Sapindales (Order) Juss. ex Bercht. & J.Presl (1820)	Ref: A. Cronquist, 1982: 441.
Zygophyllineae (Suborder)	Ref: A. Takhtajan, 1997: 331.

Historical positions

Zygophyllales (Order) Link (1829)	Ref: D.J. Mabberley, 2017: App. (p. 1002).
Zygophyllales (Order) Link (1829)	Ref: APG IV, 2016: App. (p. 16).
Zygophyllales (Order) Link (1829)	Ref: APG III, 2009: 112.
Zygophyllales (Order) Link (1829)	Ref: D.J. Mabberley, 2008: 925, 934.
eurosids I ([unranked])	Ref: APG II, 2003: 418.
Zygophyllales (Order) Link (1829)	Ref: A.B. Doweld, 2001: XXXVIII.
rosids ([unranked])	Ref: APG, 1998: 540.
Zygophyllineae (Suborder)	Ref: A. Takhtajan, 1997: 331.
Geraniales (Order) Juss. ex Bercht. & J.Presl (1820)	Ref: G. Dahlgren, 1989a,b
Sapindales (Order) Juss. ex Bercht. & J.Presl (1820)	Ref: A. Cronquist, 1982: 441-442.
Angiospermae (Subdivision) J. Lindley (1830)	Ref: D.M. Moore, 1982: 117. [rough position]
Sapindales (Order) Juss. ex Bercht. & J.Presl (1820)	Ref: L.J. Audus & V. Heywood, 1981

Number of Subtaxa

2024	Available in Systema Naturae 2000	24g;9s
1989-present	Systema Naturae 2000	26g;280s
2010	Royal Botanic Gardens, Kew & Missouri Botanical Garden: 12 Aug 2011	21g;154s
2008	D.J. Mabberley: 925	26g;280s
1997	A. Takhtajan	25[22]g;240s
1982	A. Cronquist	30g250s