Biology:List of grasses of Puerto Rico

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The grass family Poaceae is the largest group of flowering plants present on the island of Puerto Rico. With 258 species, it represents 9% of all Angiosperms and 33% of all Monocots.

The following is a list of grass species known to exist in Puerto Rico, separated by genus:

Agrostis

Agrostis hyemalis

Andropogon

Andropogon bicornis
Andropogon glomeratus
Andropogon gracilis
Andropogon leucostachyus
Andropogon virginicus

Anthephora

Anthephora hermaphrodita

Aristida

Aristida adscensionis
Aristida chaseae
Aristida portoricensis
Aristida refracta
Aristida spiciformis
Aristida suringarii
Aristida swartziana

Arthraxon

Arthraxon castratus

Arthrostylidium

Arthrostylidium farctum
Arthrostylidium multispicatum
Arthrostylidium sarmentosum

Arundinella

Arundinella hispida

Arundo

Arundo donax

Avena

Avena sativa

Axonopus

Axonopus aureus
Axonopus compressus
Axonopus fissifolius

Bambusa

Bambusa multiplex
Bambusa vulgaris

Bothriochloa

Bothriochloa ischaemum
Bothriochloa pertusa
Bothriochloa saccharoides

Bouteloua

Bouteloua americana
Bouteloua juncea
Bouteloua repens

Brachyelytrum

Brachyelytrum erectum

Cenchrus

Cenchrus brownii
Cenchrus echinatus
Cenchrus gracillimus
Cenchrus myosuroides
Cenchrus spinifex

Chloris

Chloris barbata
Chloris ciliata
Chloris cubensis
Chloris elata
Chloris radiata
Chloris sagraeana

Chusquea

Chusquea abietifolia

Coix

Coix lacryma-jobi

Cymbopogon

Cymbopogon citratus
Cymbopogon nardus

Cynodon

Cynodon dactylon
Cynodon nlemfuensis

Dactylis

Dactylis glomerata

Dactyloctenium

Dactyloctenium aegyptium

Dichanthelium

Dichanthelium aciculare
Dichanthelium acuminatum
Dichanthelium dichotomum
Dichanthelium leucothrix
Dichanthelium ovale
Dichanthelium sabulorum
Dichanthelium scoparium
Dichanthelium strigosum

Dichanthium

Dichanthium annulatum
Dichanthium aristatum

Diectomis

Diectomis fastigiata
Diectomis argillacea
Diectomis bicornis
Diectomis ciliaris
Diectomis dolichophylla
Diectomis eriantha
Diectomis horizontalis
Diectomis insularis
Diectomis ischaemum
Diectomis longiflora
Diectomis nuda
Diectomis panicea
Diectomis sanguinalis
Diectomis setigera
Diectomis similis
Diectomis villosa
Diectomis violascens

Echinochloa

Echinochloa colona
Echinochloa crus-galli
Echinochloa crus-pavonis
Echinochloa polystachya
Echinochloa stagnina

Eleusine

Eleusine indica

Eragrostis

Eragrostis amabilis
Eragrostis barrelieri
Eragrostis ciliaris
Eragrostis curvula
Eragrostis elliottii
Eragrostis glutinosa
Eragrostis hypnoides
Eragrostis pectinacea
Eragrostis pilosa
Eragrostis urbaniana

Eremochloa

Eremochloa ophiuroides

Eriochloa

Eriochloa polystachya
Eriochloa punctata

Eriochrysis

Eriochrysis cayennensis

Euclasta

Euclasta condylotricha

Eustachys

Eustachys petraea

Gymnopogon

Gymnopogon foliosus

Gynerium

Gynerium sagittatum

Hackelochloa

Hackelochloa granularis

Heteropogon

Heteropogon contortus

Holcus

Holcus lanatus

Homolepis

Homolepis glutinosa

Hymenachne

Hymenachne amplexicaulis

Hyparrhenia

Hyparrhenia rufa

Hypogynium

Hypogynium virgatum

Ichnanthus

Ichnanthus nemorosus
Ichnanthus pallens
Ichnanthus tenuis

Imperata

Imperata brasiliensis
Imperata contracta

Isachne

Isachne angustifolia

Lasiacis

Lasiacis divaricata
Lasiacis grisebachii
Lasiacis ligulata
Lasiacis sloanei
Lasiacis sorghoidea

Leersia

Leersia hexandra
Leersia monandra

Leptochloa

Leptochloa fusca
Leptochloa nealleyi
Leptochloa panicea
Leptochloa panicoides
Leptochloa scabra
Leptochloa virgata

Leptochloopsis

Leptochloopsis virgata

Leptocoryphium

Leptocoryphium lanatum

Lithachne

Lithachne pauciflora

Lolium

Lolium perenne

Melinis

Melinis minutiflora
Melinis repens

Microstegium

Microstegium vimineum

Muhlenbergia

Muhlenbergia capillaris

Olyra

Olyra latifolia

Oplismenus

Oplismenus hirtellus

Oryza

Oryza latifolia
Oryza sativa

Panicum

Panicum dichotomiflorum
Panicum diffusum
Panicum elephantipes
Panicum ghiesbreghtii
Panicum laxum
Panicum miliaceum
Panicum parvifolium
Panicum rigidulum
Panicum schiffneri
Panicum stenodes
Panicum stevensianum
Panicum tenerum
Panicum trichanthum
Panicum trichoides
Panicum venezuelae

Pappophorum

Pappophorum pappiferum

Paspalidium

Paspalidium chapmanii
Paspalidium geminatum

Paspalum

Paspalum arundinaceum
Paspalum bakeri
Paspalum blodgettii
Paspalum boscianum
Paspalum caespitosum
Paspalum clavuliferum
Paspalum conjugatum
Paspalum convexum
Paspalum decumbens
Paspalum densum
Paspalum dilatatum
Paspalum dispar
Paspalum distichum
Paspalum fasciculatum
Paspalum fimbriatum
Paspalum laxum
Paspalum macrophyllum
Paspalum maritimum
Paspalum millegrana
Paspalum minus
Paspalum molle
Paspalum notatum
Paspalum orbiculatum
Paspalum paniculatum
Paspalum parviflorum
Paspalum paucispicatum
Paspalum pleostachyum
Paspalum plicatulum
Paspalum pulchellum
Paspalum rupestre
Paspalum secans
Paspalum setaceum
Paspalum urvillei
Paspalum vaginatum
Paspalum virgatum

Pennisetum

Pennisetum ciliare
Pennisetum clandestinum
Pennisetum glaucum
Pennisetum polystachion
Pennisetum purpureum

Pharus

Pharus lappulaceus
Pharus latifolius
Pharus parvifolius

Phragmites

Phragmites australis

Poa

Poa annua
Poa pratensis

Polypogon

Polypogon viridis

Polytrias

Polytrias indica

Rottboellia

Rottboellia cochinchinensis

Saccharum

Saccharum officinarum
Saccharum spontaneum

Sacciolepis

Sacciolepis indica
Sacciolepis striata

Schizachyrium

Schizachyrium brevifolium
Schizachyrium sanguineum
Schizachyrium tenerum

Setaria

Setaria barbata
Setaria magna
Setaria parviflora
Setaria pradana
Setaria rariflora
Setaria setosa
Setaria tenacissima
Setaria utowanaea
Setaria vulpiseta

Sorghastrum

Sorghastrum setosum
Sorghastrum stipoides

Sorghum

Sorghum bicolor
Sorghum halepense

Spartina

Spartina patens

Sporobolus

Sporobolus cubensis
Sporobolus domingensis
Sporobolus indicus
Sporobolus pyramidatus
Sporobolus tenuissimus
Sporobolus virginicus

Stenotaphrum

Stenotaphrum secundatum

Themeda

Themeda arguens

Tragus

Tragus berteronianus

Tripidium

Tripidium bengalense

Tripsacum

Tripsacum fasciculatum
Tripsacum latifolium

Triticum

Triticum aestivum

Urochloa

Urochloa adspersa
Urochloa arrecta
Urochloa brizantha
Urochloa decumbens
Urochloa distachya
Urochloa fuscata
Urochloa maxima
Urochloa mosambicensis
Urochloa mutica
Urochloa plantaginea
Urochloa reptans

Vetiveria

Vetiveria zizanioides

Vulpia

Vulpia bromoides

Zea

Zea mays

Zoysia

Zoysia matrella
Zoysia tenuifolia

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