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Concept
Mimosoideae
Summary
The Mimosoideae are a traditional subfamily of trees, herbs, lianas, and shrubs in the pea family (Fabaceae) that mostly grow in tropical and subtropical climates. They are typically characterized by having radially symmetric flowers, with petals that are twice divided (valvate) in bud and with numerous showy, prominent stamens.
Recent work on phylogenetic relationships has found that the Mimosoideae form a clade nested with subfamily Caesalpinioideae and the most recent classification by The Legume Phylogeny Working Group refer to them as the Mimosoid clade within subfamily Caesalpinioideae. The group includes about 40 genera and 2,500 species.
Some classification systems, for example the Cronquist system, treat the Fabaceae in a narrow sense, raising the Mimisoideae to the rank of family as Mimosaceae. The Angiosperm Phylogeny Group treats Fabaceae in the broad sense. The Mimosoideae were historically subdivided into four tribes (Acacieae, Ingeae, Mimoseae, and Mimozygantheae). However, modern molecular phylogenetics has shown that these groupings were artificial. Several informal subgroups have been proposed, but not yet described formally as tribes. Additionally, the genus Acacia was recently segregated into five genera (Acacia sensu stricto, Acaciella, Mariosousa, Senegalia, and Vachellia).
Adenanthera group
Adenanthera L.
Amblygonocarpus Harms
Calpocalyx Harms
Pseudoprosopis Harms
Tetrapleura Benth.
Xylia Benth.
Entada group
Elephantorrhiza Benth.
Entada Adans.
Piptadeniastrum Brenan
Newtonia group
Fillaeopsis Harms
Indopiptadenia Brenan
Lemurodendron Villiers & P. Guinet
Newtonia Baill.
Prosopis group
Prosopis L.
Xerocladia Harv.
Mimozyganthus group
Mimozyganthus Burkart
Piptadeniopsis Burkart
Prosopidastrum Burkart
Leucaena group
Desmanthus Willd.
Kanaloa Lorence & K.R.Wood
Leucaena Benth.
Schleinitzia Warb. ex Nevling & Niezgoda
Dichrostachys group
Alantsilodendron Villiers
Calliandropsis H.M.Hern. & P.Guinet
Dichrostachys (DC.) Wight & Arn.
Gagnebina Neck. ex DC.
Unassigned
Aubrevillea Pellegr.
Official source
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