Inverted repeat-lacking clade | |
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Galega officinalis | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Fabales |
Family: | Fabaceae |
Subfamily: | Faboideae |
Clade: | Meso-Papilionoideae |
Clade: | Non-protein amino acid-accumulating clade |
Clade: | Hologalegina |
Clade: | Inverted repeat-lacking clade (Wojciechowski et al. 2000,[1] 2004[2]) Wojciechowski 2013[3] |
Tribes[1][5] | |
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Synonyms | |
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The inverted repeat-lacking clade (IRLC) is a monophyletic clade of the flowering plant subfamily Faboideae (or Papilionaceae). Faboideae includes the majority of agriculturally-cultivated legumes. The name of this clade is informal and is not assumed to have any particular taxonomic rank like the names authorized by the ICBN or the ICPN.[3] The clade is characterized by the loss of one of the two 25-kb inverted repeats in the plastid genome that are found in most land plants.[6] It is consistently resolved in molecular phylogenies.[1][2][5][6][7][8][9][10][11][12][13] The clade is predicted to have diverged from the other legume lineages 39.0±2.4 million years ago (in the Eocene).[14] It includes several large, temperate genera such as Astragalus, Hedysarum, Medicago, Oxytropis, Swainsona, and Trifolium.
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