Commelinales is an order of flowering plants. It comprises five families: Commelinaceae, Haemodoraceae, Hanguanaceae, Philydraceae, and Pontederiaceae. All the families combined contain over 885 species in about 70 genera; the majority of species are in the Commelinaceae. Plants in the order share a number of synapomorphies that tie them together, such as a lack of mycorrhizal associations and tapetal raphides. Estimates differ as to when the Commelinales evolved, but most suggest an origin and diversification sometime during the mid- to late Cretaceous. Depending on the methods used, studies suggest a range of origin between 123 and 73 million years, with diversification occurring within the group 110 to 66 million years ago. The order's closest relatives are in the Zingiberales, which includes ginger, bananas, cardamom, and others.^[2]

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Quick Facts Scientific classification, Families ...

Commelinales Temporal range: 80–0 Ma PreꞒ Ꞓ O S D C P T J K Pg N Late Cretaceous - Recent
Tradescantia pallida
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Clade:	Commelinids
Order:	Commelinales Mirb. ex Bercht. & J.Presl[1]
Families
Commelinaceae Haemodoraceae Hanguanaceae Philydraceae Pontederiaceae
Synonyms
Haemodorales

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According to the most recent classification scheme, the APG IV of 2016, the order includes five families:^[3]

• Commelinaceae
• Haemodoraceae
• Hanguanaceae
• Philydraceae
• Pontederiaceae

This is unchanged from the APG III of 2009 and the APG II of 2003, but different from the older APG system of 1998, which did not include Hanguanaceae.