Caesalpinioideae
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Caesalpinioideae
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Caesalpinioideae is a botanical name at the rank of subfamily, placed in the large family Fabaceae or Leguminosae. Its name is formed from the generic name Caesalpinia. It is known also as the Peacock Flower family.[1]
The Caesalpinioideae are mainly trees distributed in the moist tropics, but includes such temperate species as the honeylocust (Gleditsia triacanthos), Kentucky coffeetree (Gymnocladus dioicus), and redbud (Cercis canadensis). Their flowers are zygomorphic, but are very variable. Nodulation is rare in this subfamily, and where it does occur nodules have a primitive structure.
Because the Papilionoideae and Mimosoideae arose from within the Caesalpinioideae,[1] the Caesalpinioideae is paraphyletic. Therefore, it is likely to be split into several subfamilies, although it is not yet clear what those subfamilies should be.[1]
In some classifications, for example the Cronquist system, the group is recognized at the rank of family, Caesalpiniaceae.
The subfamily may be classified in four tribes, Caesalpinieae, Cassieae, Cercideae and Detarieae. The tribe Cercideae has sometimes been included in the subfamily Faboideae (aka Papilionoideae) in the past.
Distinguishing characters:
- 1. Leaves usually paripinnate or binary.
- 2. Flowers slightly irregular, zygomorphic.
- 3. Ovary superior.
- 4. Fruits dehiscent or indehiscent.
- 5. Raceme inflorescence.
The subfamily Caesalpinioideae contains 180 genera in all over the world.
Floral formula - % ○+ K(5)or5 C5 A10 G_
Contents
Tribe Caesalpinieae
Tribe Cassieae
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Subtribe Dialiinae |
Subtribe CassiinaeSubtribe CeratoniinaeSubtribe Duparquetiinae |
Tribe Cercideae
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Subtribe Bauhiniinae
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Subtribe Cercidinae
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Tribe Detarieae
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About 81 genera of predominantly African distribution.
Phylogenetics
Caesalpinioideae, as traditionally circumscribed, is paraphyletic. Several molecular phylogenies have shown that the other two subfamilies of Fabaceae (Faboideae and Mimosoideae) are both nested within Caesalpinioideae.[3][4][5]
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Asterisks (*) indicate clades traditionally assigned to Caesalpinioideae.
References
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Wikimedia Commons has media related to [[commons:Lua error in Module:WikidataIB at line 506: attempt to index field 'wikibase' (a nil value).|Lua error in Module:WikidataIB at line 506: attempt to index field 'wikibase' (a nil value).]]. |
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Wikispecies has information related to: Caesalpinioideae |
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