My Fascination with Poaceae: The Grass Family
As a plant enthusiast, I’ve always been captivated by the diversity and ubiquity of the Poaceae family, commonly known as grasses. From the vast grasslands that sustain countless herbivores to the humble lawn in your backyard, grasses play a vital role in our ecosystems and daily lives. In this article, I’ll share my fascination with this remarkable plant family, exploring its characteristics, ecological importance, and some of its most notable members.
The Characteristics of Poaceae
Grasses are flowering plants, but their flowers are often inconspicuous and wind-pollinated. They are characterized by their hollow stems, called culms, and their long, narrow leaves with parallel venation. The fruit of a grass is a caryopsis, commonly known as a grain, which is a dry, single-seeded fruit where the seed coat is fused to the pericarp. This unique fruit structure is one of the defining features of the Poaceae family.
Ecological Importance of Grasses
Grasses are the foundation of many terrestrial ecosystems, providing food and shelter for a wide range of animals. They are the primary food source for grazing animals like cattle, sheep, and bison, as well as for many insects and birds. Grasslands also play a crucial role in soil conservation, preventing erosion and promoting water infiltration.
Genera of Poaceae
The Poaceae family is incredibly diverse, comprising over 12,000 species in approximately 822 genera. Here are some of the most notable genera and their common representatives:
- Oryza: This genus includes the cultivated rice species, Oryza sativa, which is a staple food for billions of people worldwide. – 19 Species in Genus Oryza
- Triticum: This genus encompasses wheat species, such as Triticum aestivum (bread wheat), which is used to produce flour for bread, pasta, and other baked goods. – 6 Species in Genus Triticum
- Zea: The sole member of this genus is Zea mays, commonly known as maize or corn. It’s a versatile crop used for food, animal feed, and biofuel production. – 7 Species in Genus Zea
- Avena: This genus includes oats, such as Avena sativa, which are consumed as oatmeal or used in livestock feed. – 33 Species in Genus Avena
- Hordeum: This genus comprises barley species, like Hordeum vulgare, which is used for brewing beer, making malt, and animal feed.
- Saccharum: This genus includes sugarcane, Saccharum officinarum, which is the primary source of sugar worldwide. – 16 Species in Genus Saccharum
- Bambusa: This genus represents a group of woody bamboos, which are used for construction, furniture, and various other purposes. – 156 Species in Genus Bambusa
- Poa: This genus includes Kentucky bluegrass, Poa pratensis, which is a popular lawn grass in temperate regions. – 606 Species in Genus Poa
- Festuca: This genus comprises fescue grasses, such as Festuca arundinacea (tall fescue), which are used for lawns, pastures, and erosion control. – 680 Species in Genus Festuca
- Aakia J.R.Grande
- Achnatherum P.Beauv.
- Aciachne Benth.
- Acidosasa C.D.Chu & C.S.Chao
- Acostia Swallen
- Acrachne Wight & Arn. ex Chiov.
- Acritochaete Pilg.
- Acroceras Stapf
- Acrospelion Besser
- Actinocladum McClure ex Soderstr.
- Adenochloa Zuloaga
- Aegilops L.
- × Aegilotriticum P.Fourn.
- Aeluropus Trin.
- Afrotrichloris Chiov.
- Agenium Nees
- Agnesia Zuloaga & Judz.
- × Agroelymus A.Camus
- × Agropogon P.Fourn.
- Agropyron Gaertn.
- Agropyropsis (Batt. & Trab.) A.Camus
- Agrostis L. – 208 Species in Genus Agrostis
- Agrostopoa Davidse, Soreng & P.M.Peterson
- Agrostula P.M.Peterson, Romasch., Soreng & Sylvester
- Aira L. – 11 Species in Genus Aira
- Airopsis Desv.
- Alexfloydia B.K.Simon
- Alloeochaete C.E.Hubb.
- Allolepis Soderstr. & H.F.Decker
- Alloteropsis J.Presl
- Alopecurus L.
- Alpagrostis P.M.Peterson, Romasch., Soreng & Sylvester
- Altoparadisium Filg., Davidse, Zuloaga & Morrone
- Alvimia C.E.Calderón ex Soderstr. & Londoño
- Amelichloa Arriaga & Barkworth
- Ammochloa Boiss.
- Ampelocalamus S.L.Chen T.H.Wen & G.Y.Sheng
- Ampelodesmos Link
- Amphibromus Nees
- Amphicarpum Kunth
- Amphipogon R.Br.
- Anadelphia Hack.
- Ancistrachne S.T.Blake
- Ancistragrostis S.T.Blake
- Andropogon L. – 133 Species in Genus Andropogon
- Andropterum Stapf
- Anemanthele Veldkamp
- Aniselytron Merr.
- Anisopogon R.Br.
- Annamocalamus H.N.Nguyen, N.H.Xia & V.T.Tran
- Anomochloa Brongn.
- Anthaenantiopsis Mez ex Pilg.
- Anthenantia P.Beauv.
- Anthephora Schreb.
- Anthosachne Steud.
- Anthoxanthum L.
- Antinoria Parl.
- Apera Adans.
- Apluda L.
- Apochloa Zuloaga & Morrone
- Apoclada McClure
- Apocopis Nees
- Arberella Soderstr. & C.E.Calderón
- Arctagrostis Griseb.
- × Arctodupontia Tzvelev
- Arctohyalopoa Röser & Tkach
- Arctopoa (Griseb.) Prob.
- Aristida L.
- Arrhenatherum P.Beauv.
- Arthraxon P.Beauv.
- Arthropogon Nees
- Arthrostylidium Rupr.
- Arundinaria Michx. – 4 Species in Genus Arundinaria
- Arundinella Raddi
- Arundo L. – 5 Species in Genus Arundo
- Arundoclaytonia Davidse & R.P.Ellis
- Asthenochloa Buse
- Astrebla F.Muell.
- Athroostachys Benth.
- Atractantha McClure
- Aulonemia Goudot
- Aulonemiella L.G.Clark, Londoño, C.D.Tyrrell & Judz.
- Australopyrum (Tzvelev) Á.Löve
- Austrochloris Lazarides
- Austroderia N.P.Barker & H.P.Linder
- Austrostipa S.W.L.Jacobs & J.Everett
- Avellinia Parl.
- Avenella Bluff ex Drejer
- Avenula (Dumort.) Dumort.
- Axonopus P.Beauv.
- Baptorhachis Clayton & Renvoize
- Barkworthia Romasch., P.M.Peterson & Soreng
- Bashania Keng f. & T.P.Yi
- Batochloa Salariato & Zuloaga
- Beckmannia Host
- Bellardiochloa Chiov.
- Bergbambos Stapleton
- Bewsia Gooss.
- Bhidea Stapf ex Bor
- Blepharidachne Hack.
- Boldrinia L.N.Silva
- Bonia Balansa
- Borinda Stapleton
- Bothriochloa Kuntze
- Bouteloua Lag.
- Brachychloa S.M.Phillips
- Brachyelytrum P.Beauv.
- Brachypodium P.Beauv.
- Brachystachyum Keng
- Brasilochloa R.P.Oliveira & L.G.Clark
- Briza L. – 5 Species in Genus Briza
- Bromuniola Stapf & C.E.Hubb.
- Bromus L. – 174 Species in Genus Bromus
- Brylkinia F.Schmidt
- Buergersiochloa Pilg.
- Calamagrostis Adans. – 213 Species in Genus Calamagrostis
- Calamtrisetum Charit.
- Calotheca Desv.
- Calyptochloa C.E.Hubb.
- Cambajuva P.L.Viana, L.G.Clark & Filg.
- Campeiostachys Drobow
- × Campeyilia Sennikov
- Canastra Morrone, Zuloaga, Davidse & Filg.
- Capeochloa H.P.Linder & N.P.Barker
- Capillipedium Stapf
- Castellia Tineo
- Catabrosa P.Beauv.
- Catabrosella (Tzvelev) Tzvelev
- Catalepis Stapf & Stent
- × Catanellia L.J.Gillespie & Soreng
- Catapodium Link
- Cathariostachys S.Dransf.
- Celtica F.M.Vázquez & Barkworth – Celtica Gigantea in Genus Celtica
- Cenchrus L.
- Centotheca Desv.
- Centropodia Rchb.
- Cephalostachyum Munro
- Chaetium Nees
- Chaetobromus Nees
- Chaetopoa C.E.Hubb.
- Chamaeraphis R.Br.
- Chandrasekharania V.J.Nair, V.S.Ramach. & Sreek.
- Chascolytrum Desv.
- Chasechloa A.Camus
- Chasmanthium Link – 5 Species in Genus Chasmanthium
- Chasmopodium Stapf
- Chevalierella A.Camus
- Chikusichloa Koidz.
- Chimaerochloa H.P.Linder
- Chimonobambusa Makino
- Chimonocalamus Hsueh f. & T.P.Yi
- Chionochloa Zotov
- Chloothamnus Buse
- Chloris Sw. – 54 Species in Genus Chloris
- Chlorocalymma Clayton
- Chrysochloa Swallen
- Chrysopogon Trin.
- Chusquea Kunth
- Cinna L. – 3 Species in Genus Cinna
- Cinnagrostis Griseb.
- Cinnastrum E.Fourn.
- Cladoraphis Franch.
- Clausospicula Lazarides
- Cleistochloa C.E.Hubb.
- Cleistogenes Keng
- Cnidochloa Zuloaga
- Cochinchinochloa H.N.Nguyen & V.T.Tran
- Coelachne R.Br.
- Coelachyrum Hochst. & Nees
- Coix L.
- Colanthelia McClure & E.W.Sm.
- Coleanthus Seidel ex Roem. & Schult.
- Coleataenia Griseb.
- Colpodium Trin.
- Condilorachia P.M.Peterson, Romasch. & Soreng
- Cortaderia Stapf
- Corynephorus P.Beauv.
- Cottea Kunth
- Craspedorhachis Benth.
- Crinipes Hochst.
- Crithopsis Jaub. & Spach
- Cryptachne E.J.Thomps.
- Cryptochloa Swallen
- Ctenium Panz.
- Cutandia Willk.
- Cyathopus Stapf
- Cymbopogon Spreng. – 53 Species in Genus Cymbopogon
- × Cynochloris Clifford & Everist
- Cynodon Rich.
- Cynosurus L.
- Cyperochloa Lazarides & L.Watson
- Cyphochlaena Hack.
- Cyphonanthus Zuloaga & Morrone
- Cyrtochloa S.Dransf.
- Cyrtococcum Stapf
- Dactylis L.
- Dactyloctenium Willd.
- Daknopholis Clayton
- Danthonia DC. – 27 Species in Genus Danthonia
- Danthoniastrum (Holub) Holub
- Danthonidium C.E.Hubb.
- Danthoniopsis Stapf
- Dasypyrum (Coss. & Durieu) T.Durand
- Davidsea Soderstr. & R.P.Ellis
- Decaryella A.Camus
- Decaryochloa A.Camus
- Dendrocalamus Nees
- Deschampsia P.Beauv. – 64 Species in Genus Deschampsia
- Desmazeria Dumort.
- Desmostachya (Stapf) Stapf
- Diandrolyra Stapf
- Diarrhena P.Beauv.
- Dichaetaria Nees ex Steud.
- Dichanthelium (Hitchc. & Chase) Gould
- Dichanthium P.Willemet
- Didymogonyx (L.G.Clark & Londoño) C.D.Tyrrell, L.G.Clark & Londoño
- Diectomis Kunth
- Digitaria Haller
- Dignathia Stapf
- Diheteropogon Stapf
- Dilophotriche (C.E.Hubb.) Jacq.-Fél.
- Dimeria R.Br.
- Dimorphochloa S.T.Blake
- Dinebra Jacq.
- Dinochloa Buse
- Diplachne P.Beauv.
- Disakisperma Steud.
- Dissochondrus (Hillebr.) Kuntze
- Distichlis Raf. – 11 Species in Genus Distichlis
- Dregeochloa Conert
- Drepanostachyum Keng f.
- Dryopoa Vickery
- × Dupoa J.Cay. & Darbysh.
- Dupontia R.Br.
- Dupontiopsis Soreng, L.J.Gillespie & Koba
- Duthiea Hack. ex Procop.
- Eccoptocarpha Launert
- Echinaria Desf.
- Echinochloa P.Beauv.
- Echinolaena Desv.
- Echinopogon P.Beauv.
- Ehrharta Thunb.
- Ekmanochloa Hitchc.
- Eleusine Gaertn.
- Elionurus Humb. & Bonpl. ex Willd.
- Ellisochloa P.M.Peterson & N.P.Barker
- × Elyhordeum Mansf.
- × Elyleymus B.R.Baum
- Elymandra Stapf
- × Elymostachys Tzvelev
- Elymus L.
- Elytrophorus P.Beauv.
- Elytrostachys McClure
- Enneapogon Desv. ex P.Beauv.
- Enteropogon Nees
- Entolasia Stapf
- Entoplocamia Stapf
- Eragrostiella Bor
- Eragrostis Wolf – 425 Species in Genus Eragrostis
- Eremitis Döll
- Eremocaulon Soderstr. & Londoño
- Eremochloa Buse
- Eremopyrum (Ledeb.) Jaub. & Spach
- Eriachne R.Br.
- Erianthecium Parodi
- Erianthus Michx.
- Eriochloa Kunth
- Eriochrysis P.Beauv.
- Eriocoma Nutt.
- Erioneuron Nash
- × Eriosella Romasch.
- Euclasta Franch.
- Eulalia Kunth
- Eulaliopsis Honda
- Eustachys Desv.
- Exotheca Andersson
- Fargesia Franch. – 49 Species in Genus Fargesia
- Farrago Clayton
- Ferrocalamus Hsueh & Keng f.
- Festucopsis (C.E.Hubb.) Melderis
- × Festulolium Asch. & Graebn.
- Filgueirasia Guala
- Fimbribambusa Widjaja
- Fingerhuthia Lehm.
- Froesiochloa G.A.Black
- Gaoligongshania D.Z.Li, Hsueh & N.H.Xia
- Garnotia Brongn.
- Gastridium P.Beauv.
- Gaudinia P.Beauv.
- Gelidocalamus T.H.Wen
- Geochloa H.P.Linder & N.P.Barker
- Germainia Balansa & Poitr.
- Gerritea Zuloaga, Morrone & Killeen
- × Gigantocalamus K.M.Wong
- Gigantochloa Kurz ex Munro
- Gilgiochloa Pilg.
- Glaziophyton Franch.
- Glyceria R.Br.
- Glyphochloa Clayton
- Gouinia E.Fourn. ex Benth. & Hook.f.
- Graphephorum Desv.
- Greeneochloa P.M.Peterson, Soreng, Romasch. & Barberá
- Greslania Balansa
- Guadua Kunth – 34 Species in Genus Guadua
- Guaduella Franch.
- Gymnopogon P.Beauv.
- Gynerium Willd. ex P.Beauv.
- Habrochloa C.E.Hubb.
- Hackelochloa Kuntze
- Hakonechloa Makino ex Honda – Hakonechloa Macra in Genus Hakonechloa
- Halopyrum Stapf
- Harpachne Hochst. ex A.Rich.
- Harpochloa Kunth
- Helictochloa Romero Zarco
- Helictotrichon Besser
- Hemarthria R.Br.
- Hemisorghum C.E.Hubb.
- Henrardia C.E.Hubb.
- Hesperostipa (Elias) Barkworth
- Heteranthelium Hochst. ex Jaub. & Spach
- Heteranthoecia Stapf
- Heteropholis C.E.Hubb.
- Heteropogon Pers.
- Hickelia A.Camus
- Hilaria Kunth – 10 Species in Genus Hilaria
- Himalayacalamus Keng f.
- Hitchcockella A.Camus
- Holcolemma Stapf & C.E.Hubb.
- Holcus L.
- Holttumochloa K.M.Wong
- Homolepis Chase
- Homopholis C.E.Hubb.
- Homozeugos Stapf
- Hookerochloa E.B.Alexeev
- Hopia Zuloaga & Morrone
- Hordelymus (Jess.) Harz
- Hsuehochloa D.Z.Li & Y.X.Zhang
- Hubbardia Bor
- Hubbardochloa Auquier
- Humbertochloa A.Camus & Stapf
- Hyalopoa (Tzvelev) Tzvelev
- Hyalopodium Röser & Tkach
- Hydrothauma C.E.Hubb.
- Hygrochloa Lazarides
- Hygroryza Nees
- Hylebates Chippind.
- Hymenachne P.Beauv.
- Hyparrhenia Andersson ex E.Fourn.
- Hyperthelia Clayton
- Hypseochloa C.E.Hubb.
- Ichnanthus P.Beauv.
- Imperata Cirillo
- Indocalamus Nakai
- Indopoa Bor
- Indosasa McClure
- Isachne R.Br.
- Ischaemum L.
- Iseilema Andersson
- Ixophorus Schltdl.
- Janochloa Zuloaga & Delfini
- Jansenella Bor
- Jarava Ruiz & Pav.
- Jouvea E.Fourn.
- Kalinia H.L.Bell & Columbus
- Kampochloa Clayton
- Kaokochloa De Winter
- Kellochloa Lizarazu, Nicola & Scataglini
- × Kengdoroegneria Olshanskyi
- Kengiochloa Y.H.Tong & N.H.Xia
- Kengyilia C.Yen & J.L.Yang
- Keratochlaena Morrone & Zuloaga
- Kerriochloa C.E.Hubb.
- Khoonmengia N.H.Xia, Y.H.Tong & X.R.Zheng
- Kinabaluchloa K.M.Wong
- Koeleria Pers.
- Koordersiochloa Merr.
- Kuruna Attigala, Kaththr. & L.G.Clark
- Lachnagrostis Trin.
- Laegaardia P.M.Peterson, Soreng, Romasch. & Barberá
- Lagurus L. – Lagurus Ovatus in Genus Lagurus
- Lamarckia Moench
- Laobambos Haev., Lamxay & D.Z.Li
- Lasiacis (Griseb.) Hitchc.
- Lasiorhachis (Hack.) Stapf
- Lasiurus Boiss.
- Lecomtella A.Camus
- Leersia Sw.
- Leptagrostis C.E.Hubb.
- Leptaspis R.Br.
- Leptocarydion Hochst. ex Stapf
- Leptochloa P.Beauv.
- Leptothrium Kunth
- Lepturidium Hitchc. & Ekman
- Lepturopetium Morat
- Lepturus R.Br.
- × Leydeum Barkworth
- × Leymostachys Tzvelev
- Leymus Hochst.
- Limnas Trin.
- Limnodea L.H.Dewey
- Limnopoa C.E.Hubb.
- Lithachne P.Beauv.
- Littledalea Hemsl.
- Locajonoa Soreng
- Lolium L.
- Lombardochloa Roseng. & B.R.Arrill.
- Lophacme Stapf
- Lophatherum Brongn.
- Lophopogon Hack.
- Lorenzochloa Reeder & C.Reeder
- Loudetia Hochst. ex Steud.
- Loudetiopsis Conert
- Louisiella C.E.Hubb. & J.Léonard
- Loxodera Launert
- Luziola Juss.
- Lycochloa Sam.
- Lygeum Loefl. ex L.
- Maclurochloa K.M.Wong
- Maclurolyra C.E.Calderón ex Soderstr.
- Macrochloa Kunth
- Maltebrunia Kunth
- Manisuris L.
- Mayariochloa Salariato, Morrone & Zuloaga
- Megalachne Steud.
- Megastachya P.Beauv.
- Megathyrsus (Pilg.) B.K.Simon & S.W.L.Jacobs
- Melanocenchris Nees
- Melica L.
- Melinis P.Beauv. – 23 Species in Genus Melinis
- Melocalamus Benth.
- Melocanna Trin.
- Merostachys Spreng.
- Merxmuellera Conert
- Mesosetum Steud.
- Metcalfia Conert
- Mibora Adans.
- Micrachne P.M.Peterson, Romasch. & Y.Herrera
- Micraira F.Muell.
- Microbriza Parodi ex Nicora & Rúgolo
- Microcalamus Franch.
- Microchloa R.Br.
- Microlaena R.Br.
- Microstegium Nees – 24 Species in Genus Microstegium
- Milium L. – 6 Species in Genus Milium
- Miscanthidium Stapf
- Miscanthus Andersson – 15 Species in Genus Miscanthus
- Mnesithea Kunth
- Mniochloa Chase
- Molineriella Rouy
- Molinia Schrank
- Moliniopsis Hayata
- Monachather Steud.
- Monelytrum Hack.
- Monocymbium Stapf
- Moorochloa Veldkamp
- Morronea Zuloaga & Scataglini
- Mosdenia Stent
- Muhlenbergia Schreb. – 176 Species in Genus Muhlenbergia
- Mullerochloa K.M.Wong
- Munroa Torr.
- Myriocladus Swallen
- Myriostachya (Benth.) Hook.f.
- Nanooravia Kiran Raj & Sivad.
- Nardus L.
- Narenga Bor
- Nassella (Trin.) É.Desv.
- Nastus Juss.
- Neesiochloa Pilg.
- Nematopoa C.E.Hubb.
- Neobouteloua Gould
- Neololeba Widjaja
- Neomicrocalamus Keng f.
- Neostapfia Burtt Davy
- Neostapfiella A.Camus
- Neotrinia (Tzvelev) M.Nobis, P.D.Gudkova & A.Nowak
- Nephelochloa Boiss.
- Neurachne R.Br.
- Neyraudia Hook.f.
- Nianhochloa H.N.Nguyen & V.T.Tran
- Nicoraepoa Soreng & L.J.Gillespie
- Notochloe Domin
- Ocellochloa Zuloaga & Morrone
- Ochlandra Thwaites
- Odyssea Stapf
- Oedochloa C.Silva & R.P.Oliveira
- Oldeania Stapleton
- Oligostachyum Z.P.Wang & G.H.Ye
- Olmeca Soderstr.
- Oloptum Röser & Hamasha
- Olyra L.
- Oncorachis Morrone & Zuloaga
- Ophiuros C.F.Gaertn.
- Oplismenopsis Parodi
- Oplismenus P.Beauv.
- Orcuttia Vasey
- Oreobambos K.Schum.
- Oreochloa Link
- Oreopoa H.Scholz & Parolly
- Orinus Hitchc.
- Oropetium Trin.
- Ortachne Nees ex Steud.
- Orthacanthus P.M.Peterson & Romasch.
- Orthoclada P.Beauv.
- Orthoraphium Nees
- Oryzidium C.E.Hubbard & Schweick.
- Oryzopsis Michx.
- Osvaldoa J.R.Grande
- Otachyrium Nees
- Otatea (McClure & E.W.Sm.) C.E.Calderón ex Soderstr.
- Ottochloa Dandy
- Oxychloris Lazarides
- Oxyrhachis Pilg.
- Oxytenanthera Munro
- Panicum L. – 264 Species in Genus Panicum
- Pappagrostis Roshev.
- Pappophorum Schreb.
- Pappostipa (Speg.) Romasch., P.M.Peterson & Soreng
- Parabambusa Widjaja
- Paracolpodium (Tzvelev) Tzvelev
- Paractaenum P.Beauv.
- Parafestuca E.B.Alexeev
- Parahyparrhenia A.Camus
- Paramochloa P.M.Peterson, Soreng, Romasch. & Barberá
- Parapholis C.E.Hubb.
- Paratheria Griseb.
- Pariana Aubl.
- Parianella Hollowell, F.M.Ferreira & R.P.Oliveira
- Parodiolyra Soderstr. & Zuloaga
- Parodiophyllochloa Zuloaga & Morrone
- Parvotrisetum Chrtek
- Paspalum L. – 356 Species in Genus Paspalum
- Patis Ohwi
- Patzkea G.H.Loos
- Pentameris P.Beauv.
- Pentapogon R.Br.
- Periballia Trin.
- Peridictyon Seberg, Fred. & Baden
- Perotis Aiton
- Perrierbambus A.Camus
- Peyritschia E.Fourn.
- Phacelurus Griseb.
- Phaenanthoecium C.E.Hubb.
- Phaenosperma Munro ex Benth.
- Phalaris L. – 19 Species in Genus Phalaris
- Pharus P.Browne
- Pheidochloa S.T.Blake
- Phippsia (Trin.) R.Br.
- Phleum L.
- Pholiurus Trin.
- Phragmites Adans. – 4 Species in Genus Phragmites
- Phuphanochloa Sungkaew & Teerawat.
- Phyllorachis Trimen
- × Phyllosasa Demoly
- Phyllostachys Siebold & Zucc. – 63 Species in Genus Phyllostachys
- Pinga Widjaja
- Piptatheropsis Romasch., P.M.Peterson & Soreng
- Piptatherum P.Beauv.
- Piptochaetium J.Presl
- Piptophyllum C.E.Hubb.
- Piresia Swallen
- Piresiella Judz., Zuloaga & Morrone
- Plagiantha Renvoize
- Plagiosetum Benth.
- Pleioblastus Nakai – 26 Species in Genus Pleioblastus
- Pleuropogon R.Br.
- Plinthanthesis Steud.
- Podagrostis (Griseb.) Scribn. & Merr.
- Poecilostachys Hack.
- Pogonachne Bor
- Pogonarthria Stapf
- Pogonatherum P.Beauv.
- Pogonochloa C.E.Hubb.
- Pogononeura Napper
- Pohlidium Davidse, Soderstr. & R.P.Ellis
- Poidium Nees
- Polevansia De Winter
- Polypogon Desf.
- Polytoca R.Br.
- Polytrias Hack.
- Pommereulla Naezén
- Potamophila R.Br.
- Pratochloa Hardion
- Prosphytochloa Schweick.
- Psammochloa Hitchc.
- Psathyrostachys Nevski ex Roshev.
- Pseudanthistiria (Hack.) Hook.f.
- Pseudechinolaena Stapf
- Pseudobambusa T.Q.Nguyen
- Pseudobromus K.Schum.
- Pseudodanthonia Bor & C.E.Hubb.
- Pseudodichanthium Bor
- Pseudoeriocoma Romasch., P.M.Peterson & Soreng
- Pseudolasiacis (A.Camus) A.Camus
- Pseudopentameris Conert
- Pseudophleum Dogan
- Pseudopogonatherum A.Camus
- Pseudoraphis Griff. ex Pilg.
- Pseudoroegneria (Nevski) Á.Löve
- Pseudosasa Makino ex Nakai
- Pseudosorghum A.Camus
- Pseudostachyum Munro
- Pseudoxytenanthera Soderstr. & R.P.Ellis
- Pseudozoysia Chiov.
- Psilathera Link
- Psilolemma S.M.Phillips
- Ptilagrostiella Romasch., P.M.Peterson & Soreng
- Ptilagrostis Griseb.
- Puccinellia Parl.
- × Pucciphippsia Tzvelev
- Puelia Franch.
- Racemobambos Holttum
- Raddia Bertol.
- Raddiella Swallen
- Ratzeburgia Kunth
- Ravenochloa D.Z.Li & Y.X.Zhang
- Rehia Fijten
- Reitzia Swallen
- Relchela Steud.
- Renvoizea Zuloaga & Morrone
- Reynaudia Kunth
- Rheochloa Filg., P.M.Peterson & Y.Herrera
- Rhipidocladum McClure
- Rhizocephalus Boiss.
- Rhombolytrum Link
- Rhynchoryza Baill.
- Rhytachne Desv.
- Richardsiella Elffers & Kenn.-O’Byrne
- Rosengurttia L.N.Silva
- Rostraria Trin.
- Rottboellia L.f.
- Rugoloa Zuloaga
- Ruhooglandia S.Dransf. & K.M.Wong
- Rupichloa Salariato & Morrone
- Rytidosperma Steud.
- Sacciolepis Nash
- Sarga Ewart
- Sarocalamus Stapleton
- Sartidia De Winter
- Sasa Makino & Shibata – 39 Species in Genus Sasa
- Sasaella Makino
- Sasamorpha Nakai
- Saxipoa Soreng, L.J.Gillespie & S.W.L.Jacobs
- Schenckochloa J.J.Ortíz
- Schismus P.Beauv. – 5 Species in Genus Schismus
- Schizachne Hack.
- Schizachyrium Nees – 59 Species in Genus Schizachyrium
- Schizostachyum Nees
- Schmidiella Veldkamp
- Schmidtia Steud. ex J.A.Schmidt
- Schoenefeldia Kunth
- Schoenefeldiella P.M.Peterson
- Sclerochloa P.Beauv.
- Sclerodactylon Stapf
- Scleropogon Phil.
- Scolochloa Link
- Scrotochloa Judz.
- Scutachne Hitchc. & Chase
- Secale L.
- Sehima Forssk.
- Semiarundinaria Makino ex Nakai
- Sesleria Scop.
- Sesleriella Deyl
- Setaria P.Beauv. – 136 Species in Genus Setaria
- Setariopsis Scribn. ex Millsp.
- Shibataea Makino ex Nakai
- × Sibirotrisetokoeleria Chepinoga
- Sibirotrisetum Barberá, Soreng, Romasch., Quintanar & P.M.Peterson
- Silentvalleya V.J.Nair, Sreek., Vajr. & Bhargavan
- Simonachne E.J.Thomps.
- Simplicia Kirk
- Sinobambusa Makino ex Nakai
- Sinochasea Keng
- Sinosasa L.C.Chia ex N.H.Xia, Q.M.Qin & Y.H.Tong
- Sirochloa S.Dransf.
- Snowdenia C.E.Hubb.
- Soejatmia K.M.Wong
- Sohnsia Airy Shaw
- Sokinochloa S.Dransf.
- Sorghastrum Nash
- Sorghum Moench – 18 Species in Genus Sorghum
- Spartochloa C.E.Hubb.
- Spathia Ewart
- Sphaerobambos S.Dransf.
- Sphaerocaryum Nees ex Hook.f.
- Spheneria Kuhlm.
- Sphenopholis Scribn.
- Sphenopus Trin.
- Spinifex L.
- Spodiopogon Trin.
- Sporobolus R.Br. – 226 Species in Genus Sporobolus
- Stapfochloa H.Scholz
- Stapletonia P.Singh, S.S.Dash & P.Kumari
- Steinchisma Raf.
- Steirachne Ekman
- Stenostachys Turcz.
- Stenotaphrum Trin.
- Stephanachne Keng
- Stephostachys Zuloaga & Morrone
- Stereochlaena Hack.
- Steyermarkochloa Davidse & R.P.Ellis
- Stiburus Stapf
- Stipa L. – 174 Species in Genus Stipa
- Stipagrostis Nees
- Stipellula Röser & Hamasha
- Stolonochloa E.J.Thomps.
- Streptochaeta Schrad. ex Nees
- Streptogyna P.Beauv.
- Streptolophus Hughes
- Streptostachys Desv.
- Styppeiochloa De Winter
- Sucrea Soderstr.
- Suddia Renvoize
- Swallenia Soderstr. & H.F.Decker
- Sylvipoa Soreng, L.J.Gillespie & S.W.L.Jacobs
- Taeniatherum Nevski
- Taeniorhachis Cope
- Taquara I.L.C.Oliveira & R.P.Oliveira
- Tarigidia Stent
- Tatianyx Zuloaga & Soderstr.
- Temburongia S.Dransf. & K.M.Wong
- Temochloa S.Dransf.
- Tenaxia N.P.Barker & H.P.Linder
- Tetrachaete Chiov. ex P.R.Pirotta
- Tetrachne Nees
- Tetrapogon Desf.
- Tetrarrhena R.Br.
- Thamnocalamus Munro
- Thaumastochloa C.E.Hubb.
- Thedachloa S.W.L.Jacobs
- Thelepogon Roth
- Themeda Forssk.
- × Thinoelymus Banfi
- Thinopyrum Á.Löve
- Thorneochloa Romasch., P.M.Peterson & Soreng
- Thuarea Pers.
- Thyridachne C.E.Hubb.
- Thyridolepis S.T.Blake
- Thyrsia Stapf
- × Thyrsocalamus Sungkaew & W.L.Goh
- Thyrsostachys Gamble
- Thysanolaena Nees
- Tibisia C.D.Tyrrell, Londoño & L.G.Clark
- Timouria Roshev.
- Tongpeia Stapleton
- Torreyochloa Church
- Trachypogon Nees
- Trachys Pers.
- Tragus Haller
- Tribolium Desv.
- Trichanthecium Zuloaga & Morrone
- Tricholaena Schrad.
- Tricholemma (Röser) Röser
- Trichoneura Andersson
- Trichopteryx Nees
- Tridens Roem. & Schult. – 14 Species in Genus Tridens
- Tridentopsis P.M.Peterson
- Trigonochloa P.M.Peterson & N.Snow
- Trikeraia Bor
- Trilobachne Schenck ex Henrard
- Triniochloa Hitchc.
- Triodia R.Br.
- Tripidium H.Scholz
- Triplachne Link
- Triplasiella P.M.Peterson & Romasch.
- Triplasis P.Beauv.
- Triplopogon Bor
- Tripogon Roem. & Schult.
- Tripogonella P.M.Peterson & Romasch.
- Tripsacum L.
- Triraphis R.Br.
- Triscenia Griseb.
- Trisetaria Forssk.
- Trisetopsis Röser & A.Wölk
- × Trisetopsotrichon Röser & A.Wölk
- Trisetum Pers.
- Tristachya Nees
- Tuctoria Reeder
- Tzveleviochloa Röser & A.Wölk
- Uniola L.
- Uranthoecium Stapf
- Urelytrum Hack.
- Urochloa P.Beauv.
- Urochondra C.E.Hubb.
- Vahlodea Fr.
- Valiha S.Dransf.
- Vaseyochloa Hitchc.
- Veldkampia Ibaragi & Shiro Kobay.
- Ventenata Koeler
- Vietnamocalamus T.Q.Nguyen
- Vietnamochloa Veldkamp & R.Nowack
- Vietnamosasa T.Q.Nguyen
- Viguierella A.Camus
- Vossia Wall. & Griff.
- Vulpiella (Batt. & Trab.) Burollet
- Walwhalleya Wills & J.J.Bruhl
- Wangenheimia Moench
- Whiteochloa C.E.Hubb.
- Widjajachloa K.M.Wong & S.Dransf.
- Willkommia Hack.
- Xerochloa R.Br.
- Yersinochloa H.N.Nguyen & V.T.Tran
- Yushania Keng f.
- Yvesia A.Camus
- Zaqiqah P.M.Peterson & Romasch.
- Zenkeria Trin.
- Zeugites P.Browne
- Zizania L. – 4 Species in Genus Zizania
- Zizaniopsis Döll & Asch.
- Zonotriche (C.E.Hubb.) J.B.Phipps
- Zotovia Edgar & Connor
- Zoysia Willd.
- Zuloagaea Bess
- Zygochloa S.T.Blake
Conclusion
The Poaceae family is a testament to the beauty and adaptability of the plant kingdom. From providing sustenance to billions to shaping our landscapes, grasses play an indispensable role in our world. As I continue to explore the botanical world, I’m constantly reminded of the remarkable diversity and ecological significance of this extraordinary plant family.
Note: The list of genera mentioned above is not exhaustive, and there are many other fascinating members of the Poaceae family worth exploring.