Poeae

Poeae
silver hairgrass (Aira caryophyllea)
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Monocots
(unranked):	Commelinids
Order:	Poales
Family:	Poaceae
Subfamily:	Pooideae
Tribe:	Poeae R.Br. (1814)
Genera
118 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 2,800 species in 118 genera. 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 19 subtribes.

Reticulate evolution occurred repeatedly in the tribe.

Chloroplast group 1

Torreyochloinae

• Amphibromus
• Torreyochloa

Aveninae

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

Phalaridinae

• Phalaris

Anthoxanthinae

• Anthoxanthum (syn. Ataxia, Hierochloe)

Brizinae

• Airopsis
• Briza (syn. Macrobriza; excl. Brizochloa)

Calothecinae

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

Agrostidinae

• Agrostis
• Ammophila
• Ancistragrostis
• Bromidium
• Calamagrostis (syn. Deyeuxia)
• Chaetopogon
• Dichelachne
• Echinopogon
• Hypseochloa
• Gastridium
• Lachnagrostis
• Limnodea
• Pentapogon
• Podagrostis
• Polypogon
• Triplachne

Chloroplast group 2

incertae sedis

• Avenula (syn. Homalotrichon)

Scolochloinae

• Dryopoa
• Scolochloa

Sesleriinae

• Mibora
• Echinaria
• Oreochloa
• Sesleria
• Sesleriella

Coleanthinae

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

Miliinae

• Milium

Poinae

• Agrostopoa
• Alopecurus
• Aniselytron
• Apera
• Arctagrostis
• Arctophila
• Beckmannia
• Bellardiochloa
• Brizochloa
• Cinna
• Cornucopiae
• Cyathopus
• Dupontia
• Dupontiopsis
• Gaudiniopsis
• Hookerochloa (syn. Festucella)
• Limnas
• Nephelochloa
• Nicoraepoa
• Parvotrisetum
• Phleum (syn. Maillea)
• Pholiurus
• Poa (syn. – Anthochloa, Aphanelytrum, Austrofestuca, Dissanthelium, Eremopoa, Libyella, Lindbergella, Neuropoa, Oreopoa, Parodiochloa, Tovarochloa, Tzvelevia)
• Pseudophleum
• Rhizocephalus
• Saxipoa
• Simplicia
• Sylvipoa
• Ventenata

Airinae

• Aira
• Antinoria
• Avenella
• Corynephorus
• Helictochloa
• Molineriella
• Periballia

Holcinae

• Deschampsia (syn. Scribneria)
• Holcus
• Vahlodea

Loliinae

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

Dactylidinae

• Dactylis
• Lamarckia

Cynosurinae

• Cynosurus

Ammochloinae

• Ammochloa

Parapholiinae

• Agropyropsis
• Catapodium
• Cutandia
• Desmazeria
• Hainardia
• Parapholis
• Sphenopus
• Vulpiella