Crossosomatales

Crossosomatales
Staphylea colchica
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Rosids
Order:	Crossosomatales
Families
Aphloiaceae Crossosomataceae Geissolomataceae Guamatelaceae Stachyuraceae Staphyleaceae Strasburgeriaceae

The Crossosomatales are an order, newly recognized by the AGP II, of flowering plants, included within the Rosids, which are part of the eudicots. The following three families are placed here:

• Family Crossosomataceae
• Family Stachyuraceae
• Family Staphyleaceae

The APG III system of 2009 includes more families in this order:

• Family Aphloiaceae
• Family Crossosomataceae
• Family Geissolomataceae
• Family Guamatelaceae
• Family Stachyuraceae
• Family Staphyleaceae
• Family Strasburgeriaceae (including the former Ixerbaceae)

Under the Cronquist system these were placed in the Rosales, Violales, and Sapindales, respectively.

In addition there are four genera, each placed within its own family, that are placed in this order by some researchers (see Matthews et al., below). These are Aphloia, Geissoloma, Ixerba, and Strasburgeria.

• Family Aphloiaceae
• Family Geissolomataceae
• Family Ixerbaceae
• Family Strasburgeriaceae

References

• Angiosperm Phylogeny website
• Matthews M.R, Endress P.K (2005). "Comparative floral structure and systematics in Crossosomatales (Crossosomataceae, Stachyuraceae, Staphyleaceae, Aphloiaceae, Geissolomataceae, Ixerbaceae, Strasburgeriaceae)". Botanical Journal of the Linnean Society 147 (1): 1–46. doi:10.1111/j.1095-8339.2005.00347.x.  (Abstract)