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Commelinales Fossil range: 80 Ma PreЄ Є O S D C P T J K Pg N ↓ Late Cretaceous - Recent
Tradescantia
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Monocots
(unranked):	Commelinids
Order:	Commelinales Dumort.
Families
See text

Commelinales is the botanical name of an order of flowering plants. It's considered that the Commelinales together with Zingiberales evolved in the Late Cretaceous around 80 millions of years ago. Two of the best-known genera in the order are Commelina and Tradescantia.

In the APG II system, of 2003, the order is placed in the clade commelinids, in the monocots, and comprises the families Commelinaceae (the spiderwort family, about 650 species), Haemodoraceae (about 75 species of mostly southern hemisphere plants), Hanguanaceae (two species of tropical Asian plants), Philydraceae (five species of tropical Asian plants) and Pontederiaceae (about three dozen species of aquatic plants including water hyacinth). This represents a change from the APG system, of 1998, which had not included family Hanguanaceae in this order.

In the Cronquist system, of 1981, this order was placed in subclass Commelinidae of class Liliopsida and copmrised the families Commelinaceae, Mayacaceae, Rapateaceae and Xyridaceae.

[edit] External links

• NCBI Taxonomy Browser

• Media related to Commelinales at Wikimedia Commons