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:
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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
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 chapmanii, syn. Paspalidium chapmanii Setaria geminata, syn. Paspalidium geminatum 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
External links Grasses of Puerto Rico factsheets