Commelinales
You can help expand this article with text translated from the corresponding article in español. (December 2009) Click [show] for important translation instructions.
|
| Commelinales Temporal range: Late Cretaceous - Recent
| |
|---|---|
| File:Flor - Quintana Roo - México.jpg | |
| Tradescantia pallida | |
| Scientific classification Edit this classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Commelinales Mirb. ex Bercht. & J.Presl[1] |
| Families | |
|
Commelinaceae | |
| Synonyms | |
|
Haemodorales | |
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]
Taxonomy
[edit | edit source]According to the most recent classification scheme, the APG IV of 2016, the order includes five families:[3]
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.
Previous classification systems
[edit | edit source]The older Cronquist system of 1981, which was based purely on morphological data, placed the order in subclass Commelinidae of class Liliopsida and included the families Commelinaceae, Mayacaceae, Rapateaceae and Xyridaceae. These families are now known to be only distantly related.[4][1] In the classification system of Dahlgren the Commelinales were one of four orders in the superorder Commeliniflorae (also called Commelinanae), and contained five families, of which only Commelinaceae has been retained by the Angiosperm Phylogeny Group.
References
[edit | edit source]- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 9, November 2011.
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ The Angiosperm Phylogeny Group. 2003 An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II. Botanical Journal of the Linnean Society 141: 399–436.
- File:Wikispecies-logo.svg Data related to Commelinales at Wikispecies
- Error creating thumbnail: File missing Media related to Lua error in Module:Commons_link at line 62: attempt to index field 'wikibase' (a nil value). at Wikimedia Commons
Lua error in Module:Taxonbar at line 165: attempt to index field 'wikibase' (a nil value). Lua error in Module:Authority_control at line 153: attempt to index field 'wikibase' (a nil value).