Poeae

Poeae
	Silver hairgrass (Aira caryophyllea)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Clade:	Commelinids
Order:	Poales
Family:	Poaceae
Clade:	BOP clade
Subfamily:	Pooideae
Supertribe:	Poodae; L.Liu
Tribe:	Poeae; R.Br. (1814)
Genera
	121 genera, see text
Synonyms
	Agrostideae Martinov (1820); Agrostidieae Dumort. (1824); Airopsideae Gren. & Godr. (1855); Alopecureae W.D.J. Koch (1837); Anthoxantheae Link ex Endl. (1830); Aveneae Dumort. (1824); Beckmannieae Nevski (1937); Calamagrostideae Trin. (1824); Cinneae Ohwi (1941); Coleantheae Husn. (1896); Cynosureae Dumort. (1824); Dupontieae A. Löve & D. Löve (1961, nom. nud.); Festuceae Dumort. (1824); Gaudinieae Rouy (1913); Graphephoreae (Asch. & Graebn.) Hyl. (1953); Hainardieae Greuter (1967); Holceae J. Presl (1846); Lolieae Link ex Endl. (1830); Koelerieae Schur (1866, nom. nud.); Milieae Link ex Endl. (1830); Phalarideae Kunth (1829); Phleeae Dumort. (1824); Scolochloeae Tzvelev (1968); Seslerieae W.D.J. Koch (1837); Triseteae Gren. & Godr. (1855); Vilfeae Trin. (1824);

The Poeae are the largest tribe of the grasses, with around 2,500 species in 121 genera.^[1] The tribe includes many lawn and pasture grasses.

Taxonomy

Two separate tribes, Poeae and Aveneae, used to be distinguished based on morphology, but phylogenetic analysis showed that they are intermingled. Poeae now includes the former Aveneae. Phylogenetic analyses identified two lineages based on chloroplast genomes. The genera are classified in 25 subtribes.^[1]

Reticulate evolution occurred repeatedly in the tribe.^[1]

Chloroplast group 1

Torreyochloinae

Amphibromus
Torreyochloa

Aveninae

Acrospelion
Arrhenatherum
Avellinia
Avena
Cinnagrostis (syn. Leptophyllochloa)
Gaudinia (syn. Trichaeta)
Graphephorum
Helictotrichon (syn. Pseudarrhenatherum; excl. Avenula, Helictochloa)
Koeleria (syn. Parafestuca)
Lagurus
Leptophyllochloa
Peyritschia
Rostraria
Sphenopholis
Tricholemma
Trisetaria
Trisetopsis
Trisetum
Tzeleviochloa

Phalaridinae

Phalaris (syn. Baldingera, Phalaroides, Typhoides)

Anthoxanthinae

Anthoxanthum (syn. Ataxia, Hierochloe)

Supersubtribe Agrostidodinae

Brizinae

Airopsis
Briza (syn. Macrobriza; excl. Brizochloa)

Echinopogoninae

Calothecinae

Chascolytrum (syn. Calotheca, Erianthecium, Gymnachne, Lombardochloa, Microbriza, Poidium, Rhombolytrum)

Agrostidinae

Agrostis (syn. Chaetopogon, Neoschischkinia, Notonema)
Bromidium
Calamagrostis (syn. Ammophila, Deyeuxia)
Chaetotropis
Gastridium
Hypseochloa
Lachnagrostis
Limnodea
Podagrostis
Polypogon
Triplachne

Chloroplast group 2

Scolochloinae

Dryopoa
Scolochloa

Sesleriinae

Airinae

Holcinae

Holcus
Vahlodea

Aristaveninae

Deschampsia (syn. Aristavena, Scribneria, Stylagrostis)

Supersubtribe Loliodinae

Loliinae

Castellia
Drymochloa
Festuca (syn. Ctenopsis, Dielsiochloa, Helleria, Hellerochloa, Loliolum, Micropyrum, Narduroides, Psilurus, Vulpia, Wangenheimia)
Leucopoa (syn. Xanthochloa)
Lolium (syns Micropyropsis, Schedonorus)
Megalachne
Patzkea
Podophorus
Pseudobromus

Dactylidinae

Dactylis
Lamarckia

Cynosurinae

Cynosurus

Ammochloinae

Ammochloa

Parapholiinae

PPAM Clade (including Poodinae)

subtribe incertae sedis

Avenula (syn. Homalotrichon, Neoholubia)

Coleanthinae

Catabrosa
Catabrosella
Coleanthus
Colpodium (syn. Keniochloa)
Hyalopoa
Paracolpodium
Phippsia
Puccinellia (syn. Pseudosclerochloa)
Sclerochloa
Zingeria

Supersubtribe Poodinae

subtribe incertae sedis

Poinae

Poa (syn. Anthochloa, Aphanelytrum, Austrofestuca, Dissanthelium, Eremopoa, Libyella, Lindbergella, Neuropoa, Ochlopoa, Oreopoa, Parodiochloa, Raimundochloa, Tovarochloa, Tzvelevia)