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Chloridoideae
Chloridoideae
is one of the largest subfamilies of grasses, with roughly 130 genera and 1,600 species, mainly found in arid tropical or subtropical grasslands. Within the PACMAD clade, their sister group are the Danthonioideae.[1] The subfamily includes widespread weeds such as Bermuda grass (Cynodon dactylon) or goosegrass (Eleusine indica), but also millet species grown in some tropical regions, namely finger millet (Eleusine coracana) and teff (Eragrostis tef). With the exception of some species in Ellisochloa, most of the subfamily's species use the C4 photosynthetic pathway. The first evolutionary transition from C3 to C4 photosynthesis in the grasses probably occurred in this subfamily, around 32 to 25 million years ago in the Oligocene.[2] Phylogeny[edit] Relationships of tribes in the Chloridoideae
Chloridoideae
according to a 2015 phylogenetic classification, also showing the Danthonioideae
Danthonioideae
as sister group:[1]

Danthonioideae

Chloridoideae

Centropodieae

Triraphideae

Eragrostideae

Cynodonteae

Zoysieae

References[edit]

^ a b Soreng, Robert J.; Peterson, Paul M.; Romschenko, Konstantin; Davidse, Gerrit; Zuloaga, Fernando O.; Judziewicz, Emmet J.; Filgueiras, Tarciso S.; Davis, Jerrold I.; Morrone, Osvaldo (2015). "A worldwide phylogenetic classification of the Poaceae
Poaceae
(Gramineae)". Journal of Systematics and Evolution. 53 (2): 117–137. doi:10.1111/jse.12150. ISSN 1674-4918.  ^ Christin, Pascal-Antoine; Besnard, Guillaume; Samaritani, Emanuela; Duvall, Melvin R.; Hodkinson, Trevor R.; Savolainen, Vincent; Salamin, Nicolas (2008). " Oligocene
Oligocene
CO2 Decline Promoted C4 Photosynthesis in Grasses". Current Biology. 18 (1): 37–43. doi:10.1016/j.cub.2007.11.058. ISSN 0960-9822. 

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Wikispecies
Wikispecies
has information related to Chloridoideae

v t e

Subfamilies and tribes of the grasses (Poaceae)

early clades

Anomochlooideae Pharoideae Puelioideae

Anomochloeae Streptochaeteae

Phareae

Atractocarpeae Guaduellieae

BOP clade

Bamboos (Bambusoideae) Oryzoideae Pooideae

Arundinarieae Bambuseae Olyreae

Ehrharteae Oryzeae Phyllorachideae Streptogyneae

Ampelodesmeae Brachyelytreae Brachypodieae Bromeae Brylkinieae Diarrheneae Littledaleae Lygeeae Meliceae Phaenospermateae Poeae Nardeae Stipeae Triticeae

PACMAD clade

Aristidoideae Arundinoideae Chloridoideae Danthonioideae Micrairoideae Panicoideae

Aristideae

Arundineae Molinieae

Centropodieae Cynodonteae Eragrostideae Triraphideae Zoysieae

Danthonieae

Eriachneae Hubbardieae Isachneae Micraireae

Andropogoneae Arundinelleae Centotheceae Chasmanthieae Cyperochloeae Gynerieae Lecomtelleae Paniceae Paspaleae Steyermarkochloeae Thysanolaeneae Tristachyideae Zeugiteae

see also: List of Poaceae
Poaceae
genera

Taxon identifiers

Wd: Q133804 EoL: 11573738 GRIN: 1467 NCBI: 147371 VASCAN: 294

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Poaceae
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