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The Info List - Chloridoideae


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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
PACMAD clade
, their sister group are the Danthonioideae
Danthonioideae
. The subfamily includes widespread weeds such as Bermuda grass ( Cynodon dactylon
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 .

PHYLOGENY

Relationships of tribes in the Chloridoideae
Chloridoideae
according to a 2015 phylogenetic classification, also showing the Danthonioideae
Danthonioideae
as sister group:

Danthonioideae
Danthonioideae

CHLORIDOIDEAE

Centropodieae

Triraphideae
Triraphideae

Eragrostideae
Eragrostideae

Cynodonteae

Zoysieae
Zoysieae

REFERENCES

* ^ 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 (Gramineae)". Journal of Systematics and Evolution. 53 (2): 117–137. ISSN 1674-4918 . doi :10.1111/jse.12150 . * ^ Christin, Pascal-Antoine; Besnard, Guillaume; Samaritani, Emanuela; Duvall, Melvin R.; Hodkinson, Trevor R.; Savolainen, Vincent; Salamin, Nicolas (2008). " Oligocene CO2 Decline Promoted C4 Photosynthesis in Grasses". Current Biology. 18 (1): 37–43. ISSN 0960-9822 . doi :10.1016/j.cub.2007.11.058 .

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* v * t * e

Subfamilies and tribes of the grasses ( Poaceae )

EARLY CLADES

Anomochlooideae Pharoideae
Pharoideae
Puelioideae

* Anomochloeae * Streptochaeteae

* Phareae

* Atractocarpeae * Guaduellieae

BOP CLADE

Bamboos (Bambusoideae) Oryzoideae
Oryzoideae
Pooideae
Pooideae

* Arundinarieae
Arundinarieae
* Bambuseae * Olyreae
Olyreae

* Ehrharteae * Oryzeae
Oryzeae
* Phyllorachideae * Streptogyneae

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

PACMAD CLADE

Aristidoideae Arundinoideae
Arundinoideae
Chloridoideae Danthonioideae
Danthonioideae
Micrairoideae Panicoideae

* Aristideae

* Arundineae * Molinieae

* Centropodieae * Cynodonteae * Eragrostideae
Eragrostideae
* Triraphideae
Triraphideae
* Zoysieae
Zoysieae

* Danthonieae

* Eriach