Grass atlas of Hawai'i version 1.0

This is the first draft of a grass atlas of Hawai'i using data from herbarium specimens, iNaturalist, vegetation plots, conservation organizations, and roadside surveys by the author. These maps are designed to be used to help understand the elevation ranges at which each species occurs and the approximate distribution of each species across the landscape. This is version 1.0, future versions will include both more data and are planned to use species distribution modeling to fill in the gaps between recorded populations. If you would like to help contribute to this project, please upload photos of grasses to inaturalist.org and I will both confirm their identity and then add them to this dataset. If you have any questions, comments, or find errors on this page please email me

DISCLAIMER: The maps presented here DO NOT represent the entire geographic range of each species in Hawai’i. For many species, the range shown here is only a small portion of the area it is truly found. As there has never been a rigorous mapping effort for the vegetation of Hawai’i, the data presented in this atlas derive from many separate sources which are strongly spatially biased around roads, cities, trails, as well as the National Parks. Although steps have been taken to remove obviously erroneous occurrences, some have likely persisted. No effort was made to remove occurrence data for populations which may have died off. The temporal range of this data is 1900 - 2023. While every effort has been made to ensure the quality and accuracy of these maps, they are not guaranteed for any purpose.

Data sources and methods

Data featured on this page were obtained from herbarium specimens, data from iNaturalist.org reviewed by the author, data from roadside surveys by the author, occurrence data from the Invasive Species Committees, along with vegetation plot data from the National Parks Inventory & Monitoring program, Hawaii forest bird survey, and the Ko'olau Mountain Watershed Partnership. To clean the data, records with coordinate uncertainty greater than 1000 meters were removed. The points manually checked to ensure the coordinates were in reasonable areas and remove any points which were suspected to be misidentified. Climate data from the Hawai'i climate data portal were also used to identify outliers which were growing in areas too hot, cold, wet, or dry and these outliers were removed if the location was deemed to be inaccurate.

There are approximately 20000 herbarium specimens of grasses which were collected across Hawai'i, but the majority of these predate the GPS era and do not yet have coordinates associated with them. Approximately 5000 of these points are included as various projects have added coordinates to these older specimens. Some of the efforts to add coordinates to these specimens have been of higher quality than others and many of the erroneous coordinates which were excluded from these maps came from such efforts. Future versions of this atlas will focus on mapping more of these records.

Synonyms and common names are shown for each species, the common names are specifically those which are used in Hawai'i. For species which do not have widely uses common names here, english names from other regions are included. Synonyms are principally those which have been used historically in Hawai'i. Misapplied names are those which have been based on misidentifcations by past botantists due to the difficulties of identifying introduced grasses in Hawai'i.

The maps show where grasses occur under natural climate conditions. As such, occurrence points of grasses found under irrigated conditions where the climate is otherwise too dry for their growth have been removed. Cultivated occurrences have also been removed when their description mentions them occurring under cultivation, but the cultivation status of some species in the ISC data were not always clear.

Islands are colored by whether each species currently occurs on it. If the species has been observed in the past 50 years it is considered present on the island. If it has not been seen in over 50 years it is considered likely extirpated ("extirpated?" on map legends) and if it has not been seen for a longer period on an island it is considered extirpated. Only one grass (Eragrostis mauiensis is truly extinct. Some are "questionable naturalizations" when it is not clear that the grass has formed a wild population or lack an herbarium specimen. "Waif" occurrences are largely of grain species which keep reappearing from birdseed or spilled grain but do not form sustaining populations.

Also see my other grass resources here.
Copyright Kevin Faccenda. Updated December 2023


Agrostis

Agrostis capillaris L.

synonyms: Agrostis vulgaris

vernacular: Rhode Island bent, colonial bent, browntop

Distribution of Agrostis capillaris in Hawai'i.

Agrostis hyemalis (Walter) Britton, Sterns & Poggenb.

vernacular: winter bent

Distribution of Agrostis hyemalis in Hawai'i.

Agrostis sandwicensis Hillebr.

synonyms: Agrostis rockii, Agrostis fallax

vernacular: no known common names

Distribution of Agrostis sandwicensis in Hawai'i.

Agrostis stolonifera L.

synonyms: Agrostis alba, Agrostis alba var. stolonifera

vernacular: creeping bent, red-top bent

Distribution of Agrostis stolonifera in Hawai'i.

Aira

Aira caryophyllea L.

vernacular: silver hairgrass

Distribution of Aira caryophyllea in Hawai'i.

Alopecurus

Alopecurus pratensis L. subsp. pratensis

vernacular: meadow foxtail

Distribution of Alopecurus pratensis in Hawai'i.

Andropogon

Andropogon bicornis L.

vernacular: bicornis grass

Distribution of Andropogon bicornis in Hawai'i.

Andropogon tenuispatheus (Nash) Nash

synonyms: Andropogon glomeratus var. pumilus, Andropogon glomeratus [sensu Hawaiian botantists]

vernacular: beardgrass, bushy bluestem

Distribution of Andropogon tenuispatheus in Hawai'i.

Andropogon virginicus L. var. virginicus

vernacular: broomsedge, virginia bluestem

Distribution of Andropogon virginicus var. virginicus in Hawai'i.

Anthoxanthum

Anthoxanthum odoratum L.

vernacular: sweet vernal grass

Distribution of Anthoxanthum odoratum in Hawai'i.

Aristida

Aristida adscensionis L.

vernacular: annual three-awn, sixweeks three-awn

Distribution of Aristida adscensionis in Hawai'i.

Arrhenatherum

Arrhenatherum elatius (L.) P.Beauv. ex J.Presl & C.Presl subsp. elatius

vernacular: tall oat grass, false oat grass

Distribution of Arrhenatherum elatius in Hawai'i.

Arundo

Arundo donax L.

vernacular: giant reed, Spanish reed

Distribution of Arundo donax in Hawai'i.

Avena

Avena barbata Pott ex Link

vernacular: wild oat

Distribution of Avena barbata in Hawai'i.

Avena fatua L.

vernacular: wild oat

Distribution of Avena fatua in Hawai'i.

Avena sativa L.

vernacular: cultivated oat, common oat, domestic oat, 'oka

Distribution of Avena sativa in Hawai'i.

Axonopus

Axonopus compressus (Sw.) P.Beauv.

synonyms: Paspalum compressum

vernacular: carpetgrass, broad-leaved carpetgrass

Distribution of Axonopus compressus in Hawai'i.

Axonopus fissifolius (Raddi) Kuhlm.

synonyms: Axonopus affinis

vernacular: narrow-leaved carpetgrass

Distribution of Axonopus fissifolius in Hawai'i.

Bothriochloa

Bothriochloa barbinodis (Lag.) Herter

synonyms: Andropogon barbinodis

vernacular: fuzzy top

Distribution of Bothriochloa barbinodis in Hawai'i.

Bothriochloa bladhii (Retz.) S.T.Blake

synonyms: Bothriochloa intermedia, Andropogon intermedius

vernacular: intermdiate blustem, Australian bluestem

Distribution of Bothriochloa bladhii in Hawai'i.

Bothriochloa ischaemum (L.) Keng

synonyms: Andropogon ischaemum

vernacular: King Ranch bluestem, KR bluestem, yellow bluestem

Distribution of Bothriochloa ischaemum in Hawai'i.

Bothriochloa macra (Steud.) S.T.Blake

synonyms: Andropogon blakei, Bothriochloa ambigua

vernacular: redleg grass

Distribution of Bothriochloa macra in Hawai'i.

Bothriochloa pertusa (L.) A.Camus

synonyms: Andropogon pertusus

vernacular: pitted bluestem, pitted beardgrass, white pili grass

Distribution of Bothriochloa pertusa in Hawai'i.

Bouteloua

Bouteloua dactyloides (Nutt.) Columbus

synonyms: Buchloe dactyloides, Bulbilis dactyloides

vernacular: American buffalo grass

Distribution of Bouteloua dactyloides in Hawai'i.

Briza

Briza maxima L.

vernacular: big quaking grass

Distribution of Briza maxima in Hawai'i.

Briza minor L.

vernacular: little quaking grass

Distribution of Briza minor in Hawai'i.

Bromus

Bromus carinatus Hook. & Arn.

vernacular: California brome

Distribution of Bromus carinatus in Hawai'i.

Bromus catharticus Vahl

synonyms: Bromus unioloides, Bromus willdenowii

vernacular: rescue grass, rescue brome

Distribution of Bromus catharticus in Hawai'i.

Bromus diandrus Roth

synonyms: Bromus rigidus subsp. gussonei, Bromus rigidus

vernacular: ripgut grass

Distribution of Bromus diandrus in Hawai'i.

Bromus hordeaceus L.

synonyms: Bromus molliformis, Bromus mollis

vernacular: soft brome

Distribution of Bromus hordeaceus in Hawai'i.

Bromus madritensis L.

vernacular: Spanish brome, Mediterranean brome

Distribution of Bromus madritensis in Hawai'i.

Bromus sterilis L.

vernacular: sterile brome

Distribution of Bromus sterilis in Hawai'i.

Bromus tectorum L.

vernacular: cheatgrass, downy brome

Distribution of Bromus tectorum in Hawai'i.

Calamagrostis

Calamagrostis expansa (Munro ex Hillebr.) Hitchc.

synonyms: Deyeuxia expansa, Greeneochloa expansa

vernacular: no known common names

Distribution of Calamagrostis expansa in Hawai'i.

Calamagrostis hillebrandii (Munro ex Hillebr.) Hitchc.

vernacular: no known common names

Distribution of Calamagrostis hillebrandii in Hawai'i.

Capillipedium

Capillipedium spicigerum S.T.Blake

vernacular: no known common names

Distribution of Capillipedium spicigerum in Hawai'i.

Cenchrus

Cenchrus agrimonioides Trin.

synonyms: Cenchrus pedunculatus

vernacular: kamanomano

Distribution of Cenchrus agrimonioides in Hawai'i.

Cenchrus ciliaris L.

synonyms: Pennisetum ciliare

vernacular: buffelgrass, blue buffelgrass

Distribution of Cenchrus ciliaris in Hawai'i.

Cenchrus clandestinus (Hochst. ex Chiov.) Morrone

synonyms: Pennisetum clandestinum

vernacular: kikuyu

Distribution of Cenchrus clandestinus in Hawai'i.

Cenchrus clandestinus ⨯ setaceus

vernacular: hybrid fountaingrass, fountain grass kikuyu hybrid

Distribution of Cenchrus clandestinus x setaceus in Hawai'i.

Cenchrus complanatus (Nees) Morrone

synonyms: Pennisetum complanatum

vernacular: no known common names

Distribution of Cenchrus complanatus in Hawai'i.

Cenchrus echinatus L.

synonyms: Cenchrus echinatus var. hillebrandianus, Cenchrus hillebrandianus

vernacular: sandbur, ‘ume‘alu, sunbur, pokies

Distribution of Cenchrus echinatus in Hawai'i.

Cenchrus elegans (Hassk.) Veldkamp

synonyms: Pennisetum macrostachyum

vernacular: burgundy giant, foxtail bamboo

Distribution of Cenchrus elegans in Hawai'i.

Cenchrus purpureus (Schumach.) Morrone

synonyms: Pennisetum purpureum, Pennisetum merkeri

vernacular: elephant grass, Napier grass, horse cane

Distribution of Cenchrus purpureus in Hawai'i.

Cenchrus setaceus (Forssk.) Morrone

synonyms: Pennisetum setaceum, Pennisetum ruppelii

vernacular: fountain grass, pampas grass [Hawaii island only]

Distribution of Cenchrus setaceus in Hawai'i.

Cenchrus setigerus Vahl

synonyms: Cenchrus setiger, Cenchrus biflorus, Cenchrus montanus

vernacular: cow sandbur

Distribution of Cenchrus setigerus in Hawai'i.

Cenchrus setosus Sw.

synonyms: Pennisetum polystachion, Pennisetum setosum, Cenchrus polystachios

vernacular: feathery pennisetum, mission grass, giant buffelgrass

Distribution of Cenchrus setosus in Hawai'i.

Cenchrus tribuloides L.

vernacular: dune sandbur

Distribution of Cenchrus tribuloides in Hawai'i.

Chloris

Chloris barbata Sw.

synonyms: Chloris inflata, Chloris paraguayensis

vernacular: finger grass, mau‘u lei, swollen fingergrass

Distribution of Chloris barbata in Hawai'i.

Chloris barbata ⨯ divaricata

vernacular: no known common names

Distribution of Chloris barbata x divaricata in Hawai'i.

Chloris divaricata R.Br.

synonyms: Chloris divaricata var. cynodontioides, Chloris divaricata var. divaricata, Chloris cynodontoides

vernacular: star grass

Distribution of Chloris divaricata in Hawai'i.

Chloris gayana Kunth

vernacular: Rhodes grass

Distribution of Chloris gayana in Hawai'i.

Chloris pycnothrix Trin.

vernacular: African stargrass

Distribution of Chloris pycnothrix in Hawai'i.

Chloris radiata (L.) Sw.

vernacular: radiate fingergrass, plushgrass

Distribution of Chloris radiata in Hawai'i.

Chloris truncata R.Br.

vernacular: black windmill grass

Distribution of Chloris truncata in Hawai'i.

Chloris virgata Sw.

vernacular: feather fingergrass

Distribution of Chloris virgata in Hawai'i.

Chrysopogon

Chrysopogon aciculatus (Retz.) Trin.

synonyms: Rhaphis aciculata, Andropogon acicularis

vernacular: pilipili'ula, pi‘ipi‘i, Wild Oat Grass, Manienie 'ula, golden beardgrass

Distribution of Chrysopogon aciculatus in Hawai'i.

Coix

Coix lacryma-jobi L.

vernacular: Job's tears, pū‘ohe‘ohe, kūkaekōlea, ohe 'ohe, pūpū kolea

Distribution of Coix lacryma-jobi in Hawai'i.

Cortaderia

Cortaderia jubata (Lemoine) Stapf

vernacular: jubata pampas grass, jubata grass

Distribution of Cortaderia jubata in Hawai'i.

Cortaderia selloana (Schult. & Schult.f.) Asch. & Graebn.

vernacular: pampas grass

Distribution of Cortaderia selloana in Hawai'i.

Cymbopogon

Cymbopogon refractus (R.Br.) A.Camus

vernacular: barbwire grass, soap grass, wild citronella grass

Distribution of Cymbopogon refractus in Hawai'i.

Cynodon

Cynodon aethiopicus Clayton & J.R.Harlan

vernacular: African bermuda grass

Distribution of Cynodon aethiopicus in Hawai'i.

Cynodon aethiopicus Clayton & J.R.Harlan × C. nlemuensis Vanderyst

vernacular: Puerto Rican stargrass, star grass

Distribution of Cynodon aethiopicus x nlemfuensis in Hawai'i.

Cynodon dactylon (L.) Pers.

synonyms: Cynodon dactylon var. maritimus [but may also have been misapplied to mean C. nlemfuensis]

vernacular: Bermuda grass, mānienie, mānienie haole

Distribution of Cynodon dactylon in Hawai'i.

Cynodon nlemfuensis Vanderyst

vernacular: giant Bermuda grass, mānienie nui

Distribution of Cynodon nlemfuensis in Hawai'i.

Cyrtococcum

Cyrtococcum patens (L.) A.Camus

vernacular: no known common names

Distribution of Cyrtococcum patens in Hawai'i.

Dactylis

Dactylis glomerata L.

vernacular: orchard grass, cocksfoot

Distribution of Dactylis glomerata in Hawai'i.

Dactyloctenium

Dactyloctenium aegyptium (L.) Willd.

vernacular: crowfoot grass, beach wiregrass

Distribution of Dactyloctenium aegyptium in Hawai'i.

Deschampsia

Deschampsia cespitosa (L.) P.Beauv. subsp. beringensis (Hultén) W.E.Lawr.

vernacular: Beringian hairgrass, tufted hairgrass

Distribution of Deschampsia cespitosa subsp. beringensis in Hawai'i.

Deschampsia nubigena Hillebr.

synonyms: Deschampsia australis, Deschampsia australis var. gracilis, Aira nubigena, Deschampsia australis fo. haleakalensis

vernacular: no known common names

Distribution of Deschampsia nubigena in Hawai'i.

Dichanthelium

Dichanthelium acuminatum (Sw.) Gould & C.A.Clark

vernacular: hairy rosette-panicgrass

Distribution of Dichanthelium acuminatum in Hawai'i.

Dichanthelium cynodon (Reichardt) C.A.Clark & Gould

synonyms: Panicum cynodon, Panicum forbesii, Panicum hobdyi, Panicum imbricatum, Panicum lamiatile, Dichanthelium forbesii, Panicum oreoboloides

vernacular: no known common names

Distribution of Dichanthelium cynodon in Hawai'i.

Dichanthelium hillebrandianum (Hitchc.) C.A.Clark & Gould

synonyms: Panicum hillebrandianum, Panicum conjungens, Panicum monticola

vernacular: no known common names

Distribution of Dichanthelium hillebrandianum in Hawai'i.

Dichanthelium isachnoides (Hildebr.) C.A.Clark & Gould

synonyms: Panicum isachnoides

vernacular: no known common names

Distribution of Dichanthelium isachnoides in Hawai'i.

Dichanthelium koolauense (H.St.John & Hosaka) C.A.Clark & Gould

synonyms: Panicum koolauense, Panicum ekeanum

vernacular: no known common names

Distribution of Dichanthelium koolauense in Hawai'i.

Dichanthium

Dichanthium annulatum (Forssk.) Stapf var. annulatum

synonyms: Andropogon annulatus var. annulatus

vernacular: Angleton grass, airport grass

Distribution of Dichanthium annulatum var. annulatum in Hawai'i.

Dichanthium annulatum (Forssk.) Stapf var. papillosum (Hochst. ex A.Rich.) de Wet & Harlan

synonyms: Andropogon annulatus var. papillosus, Dichanthium papillosum

vernacular: papillose bluestem

Distribution of Dichanthium annulatum var. papillosum in Hawai'i.

Dichanthium aristatum (Poir.) C.E.Hubb.

synonyms: Andropogon aristatus, Andropogon nodosus [misapplied]

vernacular: Wilder grass

Distribution of Dichanthium aristatum in Hawai'i.

Dichanthium caricosum (L.) A.Camus

vernacular: hairless Wilder grass

Distribution of Dichanthium caricosum in Hawai'i.

Dichanthium sericeum (R.Br.) A.Camus

synonyms: Andropogon sericeus

vernacular: Australian bluestem

Distribution of Dichanthium sericeum in Hawai'i.

Dichanthium tenue (R.Br.) A.Camus

vernacular: hairless bluestem

Distribution of Dichanthium tenue in Hawai'i.

Digitaria

Digitaria abyssinica (Hochst. ex A.Rich.) Stapf

vernacular: abyssisian crabgrass

Distribution of Digitaria abyssinica in Hawai'i.

Digitaria bicornis (Lam.) Roem. & Schult.

vernacular: dimophic crabgrass

Distribution of Digitaria bicornis in Hawai'i.

Digitaria ciliaris (Retz.) Koeler

synonyms: Digitaria sanguinalis [misapplied in Hawai'i], Syntherisma debilis [misapplied in Hawai'i]

vernacular: tropical crabgrass, kūkaepua‘a

Distribution of Digitaria ciliaris in Hawai'i.

Digitaria didactyla Willd.

synonyms: Digitaria swazilandensis

vernacular: blue couch, turf-forming crabgrass

Distribution of Digitaria didactyla in Hawai'i.

Digitaria divaricatissima (R.Br.) Hughes

vernacular: white-root grass

Distribution of Digitaria divaricatissima in Hawai'i.

Digitaria eriantha Steud.

synonyms: Digitaria decumbens, Digitaria pentzii, Digitaria smutsii, Digitaria valida

vernacular: pangola

Distribution of Digitaria eriantha in Hawai'i.

Digitaria eriostachya Mez

vernacular: wooly crabgrass

Distribution of Digitaria eriostachya in Hawai'i.

Digitaria fuscescens (J.Presl) Henrard

synonyms: Digitaria pseudo-ischaemum

vernacular: creeping kūkaepua‘a

Distribution of Digitaria fuscescens in Hawai'i.

Digitaria henryi Rendle

synonyms: Digitaria adscendens [misapplied in Hawai'i]

vernacular: Henry's crabgrass

Distribution of Digitaria henryi in Hawai'i.

Digitaria horizontalis Willd.

vernacular: Jamacian crabgrass

Distribution of Digitaria horizontalis in Hawai'i.

Digitaria insularis (L.) Mez ex Ekman

synonyms: Trichachne insularis, Valota insularis

vernacular: sourgrass

Distribution of Digitaria insularis in Hawai'i.

Digitaria mollicoma (Kunth) Henrard

vernacular: no known common names

Distribution of Digitaria mollicoma in Hawai'i.

Digitaria nuda Schumach.

vernacular: nude crabgrass

Distribution of Digitaria nuda in Hawai'i.

Digitaria orbata Hughes

vernacular: no known common names

Distribution of Digitaria orbata in Hawai'i.

Digitaria radicosa (J.Presl) Miq.

synonyms: Digitaria timorensis

vernacular: delicate crabgrass

Distribution of Digitaria radicosa in Hawai'i.

Digitaria scalarum (Schweinf.) Chiov.

synonyms: Digitaria abyssinica [misapplied], Digitaria herpoclados

vernacular: Hānā grass

Distribution of Digitaria scalarum in Hawai'i.

Digitaria setigera Roth

synonyms: Digitaria pruriens, Syntherisma pruriens

vernacular: kūkaepua‘a, itchy crabgrass, mau'u kūkaepua'a

Distribution of Digitaria setigera in Hawai'i.

Digitaria stricta Roth var. stricta

vernacular: crowned crabgrass

Distribution of Digitaria stricta var. stricta in Hawai'i.

Digitaria velutina (Forssk.) P.Beauv.

vernacular: velvety crabgrass

Distribution of Digitaria velutina in Hawai'i.

Digitaria violascens Link

synonyms: Syntherisma chinensis, Digitaria longiflora [misapplied in Hawai'i], Syntherisma helleri

vernacular: violet crabgrass, kukaipua'a uka

Distribution of Digitaria violascens in Hawai'i.

Dinebra

Dinebra panicea (Retz.) P.M.Peterson & N.Snow subsp. brachiata (Steud.) P.M.Peterson & N.Snow

synonyms: Leptochloa panicea subsp. brachiata

vernacular: mucronate sprangletop

Distribution of Dinebra panicea subsp. brachiata in Hawai'i.

Dinebra retroflexa (Vahl) Panz. var. retroflexa

vernacular: viper grass, cats tail vlei grass

Distribution of Dinebra retroflexa var. retroflexa in Hawai'i.

Diplachne

Diplachne fusca (L.) P.Beauv. ex Roem. & Schult. subsp. uninervia (J.Presl) P.M.Peterson & N.Snow

synonyms: Leptochloa fusca subsp. uninervia, Leptochloa uninervia

vernacular: sprangletop

Distribution of Diplachne fusca subsp. uninervia in Hawai'i.

Disakisperma

Disakisperma dubium (Kunth) P.M.Peterson & N.Snow

synonyms: Leptochloa dubia

vernacular: green sprangletop

Distribution of Disakisperma dubium in Hawai'i.

Dissochondrus

Dissochondrus biflorus (Hildebr.) Kuntze

synonyms: Setaria biflora

vernacular: no known common names

Distribution of Dissochondrus biflorus in Hawai'i.

Distichlis

Distichlis spicata (L.) Greene

vernacular: salt grass

Distribution of Distichlis spicata in Hawai'i.

Echinochloa

Echinochloa colonum (L.) Link subsp. colonum

synonyms: Echinochloa colona, Panicum colonum

vernacular: jungle-rice

Distribution of Echinochloa colonum subsp. colonum in Hawai'i.

Echinochloa crus-galli (L.) P.Beauv. subsp. crus-galli

synonyms: Echinochloa crus-pavonis [misapplied in Hawai'i], Panicum crus-galli, Echinochloa crus-galli var. crus-pavonis [misapplied in Hawai'i], Echinochloa walteri [misapplied in Hawai'i]

vernacular: barnyard grass, cockspur

Distribution of Echinochloa crus-galli subsp. crus-galli in Hawai'i.

Echinochloa haploclada (Stapf) Stapf

vernacular: giant barnyard grass

Distribution of Echinochloa haploclada in Hawai'i.

Ehrharta

Ehrharta calycina Sm.

synonyms: Ehrharta melicoides

vernacular: perrenial veldtgrass

Distribution of Ehrharta calycina in Hawai'i.

Ehrharta erecta Lam.

vernacular: panic veldtgrass

Distribution of Ehrharta erecta in Hawai'i.

Eleusine

Eleusine indica (L.) Gaertn.

vernacular: goose grass, wiregrass, mānienie ali‘i

Distribution of Eleusine indica in Hawai'i.

Elymus

Elymus repens (L.) Gould

synonyms: Agropyron repens

vernacular: couch grass, quackgrass

Distribution of Elymus repens in Hawai'i.

Enneapogon

Enneapogon cenchroides (Licht.) C.E.Hubb.

vernacular: nine-awned grass, soft feather pappus grass, pappus grass

Distribution of Enneapogon cenchroides in Hawai'i.

Entolasia

Entolasia marginata (R.Br.) Hughes

vernacular: bordered panic grass

Distribution of Entolasia marginata in Hawai'i.

Eragrostis

Eragrostis atropioides Hillebr.

vernacular: no known common names

Distribution of Eragrostis atropioides in Hawai'i.

Eragrostis barrelieri Daveau

vernacular: Mediterranean lovegrass

Distribution of Eragrostis barrelieri in Hawai'i.

Eragrostis brownii (Kunth) Nees

synonyms: Eragrostis cumingii [misapplied in Hawai'i]

vernacular: Brown's lovegrass, sheepgrass

Distribution of Eragrostis brownii in Hawai'i.

Eragrostis cilianensis (All.) Vignolo ex Janch.

vernacular: stinkgrass

Distribution of Eragrostis cilianensis in Hawai'i.

Eragrostis ciliaris (L.) R.Br.

vernacular: ciliate lovegrass

Distribution of Eragrostis ciliaris in Hawai'i.

Eragrostis curvula (Schrad.) Nees

synonyms: Eragrostis chloromelas

vernacular: African lovegrass, weeping grass

Distribution of Eragrostis curvula in Hawai'i.

Eragrostis cylindriflora Hochst.

synonyms: Eragrostis trichophora

vernacular: no known common names

Distribution of Eragrostis cylindriflora in Hawai'i.

Eragrostis deflexa Hitchc.

vernacular: no known common names

Distribution of Eragrostis deflexa in Hawai'i.

Eragrostis dielsii Pilg.

vernacular: no known common names

Distribution of Eragrostis dielsii in Hawai'i.

Eragrostis elongata (Willd.) J.Jacq.

vernacular: elongate lovegrass

Distribution of Eragrostis elongata in Hawai'i.

Eragrostis fosbergii Whitney

vernacular: no known common names

Distribution of Eragrostis fosbergii in Hawai'i.

Eragrostis grandis Hillebr.

synonyms: Eragrostis grandis var. oligantha

vernacular: no known common names

Distribution of Eragrostis grandis in Hawai'i.

Eragrostis leptophylla Hitchc.

vernacular: no known common names

Distribution of Eragrostis leptophylla in Hawai'i.

Eragrostis leptostachya (R.Br.) Steud.

synonyms: Eragrostis hosakai

vernacular: no known common names

Distribution of Eragrostis leptostachya in Hawai'i.

Eragrostis mauiensis Hitchc.

synonyms: Eragrostis mexicana [misapplied by Hillebrand]

vernacular: no known common names

Distribution of Eragrostis mauiensis in Hawai'i.

Eragrostis monticola (Gaudich.) Hillebr.

vernacular: kalamālō

Distribution of Eragrostis monticola in Hawai'i.

Eragrostis multicaulis Steud.

vernacular: no known common names

Distribution of Eragrostis multicaulis in Hawai'i.

Eragrostis paupera Jedwabn.

synonyms: Eragrostis whitneyi, Eragrostis falcata [misapplied E. paupera]

vernacular: no known common names

Distribution of Eragrostis paupera in Hawai'i.

Eragrostis pectinacea (Michx.) Nees var. pectinacea

synonyms: Eragrostis caroliniana, Eragrostis pectinacea var. miserrima [misapplied in Hawai'i]

vernacular: Carolina lovegrass

Distribution of Eragrostis pectinacea var. pectinacea in Hawai'i.

Eragrostis pilosa (L.) P.Beauv. var. pilosa

vernacular: pilose lovegrass, jersey lovegrass

Distribution of Eragrostis pilosa var. pilosa in Hawai'i.

Eragrostis superba Peyr.

vernacular: Wilman lovegrass

Distribution of Eragrostis superba in Hawai'i.

Eragrostis tenella (L.) P.Beauv. ex Roem. & Schult.

synonyms: Eragrostis amabilis, Eragrostis plumosa

vernacular: feather lovegrass, chinese lovegrass

Distribution of Eragrostis tenella in Hawai'i.

Eragrostis tenuifolia (A.Rich.) Hochst. ex Steud.

vernacular: elastic grass

Distribution of Eragrostis tenuifolia in Hawai'i.

Eragrostis unioloides (Retz.) Nees ex Steud.

vernacular: oat-like lovegrass

Distribution of Eragrostis unioloides in Hawai'i.

Eragrostis variabilis (Gaudich.) Steud.

synonyms: Eragrostis hawaiiensis, Eragrostis niihauensis, Eragrostis phleoides, Eragrostis thyrsoidea, Eragrostis wahowensis, Poa variabilis

vernacular: kāwelu, 'emeloa, kalamālō

Distribution of Eragrostis variabilis in Hawai'i.

Eremochloa

Eremochloa ophiuroides (Munro) Hack.

vernacular: centipede grass

Distribution of Eremochloa ophiuroides in Hawai'i.

Eriochloa

Eriochloa acuminata (J.Presl) Kunth var. acuminata

vernacular: taper-tip cupgrass

Distribution of Eriochloa acuminata var. acuminata in Hawai'i.

Eriochloa procera (Retz.) C.E.Hubb.

vernacular: tropical cupgrass

Distribution of Eriochloa procera in Hawai'i.

Eriochloa punctata (L.) Ham.

vernacular: cupgrass

Distribution of Eriochloa punctata in Hawai'i.

Festuca

Festuca aloha Catalán, Soreng & P.M.Peterson

vernacular: no known common names

Distribution of Festuca aloha in Hawai'i.

Festuca bromoides L.

synonyms: Vulpia bromoides, Festuca dertonensis

vernacular: brome fescue

Distribution of Festuca bromoides in Hawai'i.

Festuca hawaiiensis Hitchc.

synonyms: Festuca drymeja [misapplied in Hawai'i]

vernacular: no known common names

Distribution of Festuca hawaiiensis in Hawai'i.

Festuca molokaiensis Soreng, P.M.Peterson & Catalán

vernacular: no known common names

Distribution of Festuca molokaiensis in Hawai'i.

Festuca myuros L.

synonyms: Vulpia myuros, Vulpia megalura, Festuca megalura

vernacular: rattail fescue, 6-weeks fescue

Distribution of Festuca myuros in Hawai'i.

Festuca rubra L.

vernacular: red fescue, Chewwing's fescue

Distribution of Festuca rubra in Hawai'i.

Garnotia

Garnotia stricta Brongn. var. acutigluma (Steud.) Veldkamp

synonyms: Garnotia acutigluma, Garnotia sandwicensis

vernacular: no known common names

Distribution of Garnotia stricta var. acutigluma in Hawai'i.

Gastridium

Gastridium phleoides (Nees & Meyen) C.E.Hubb.

synonyms: Gastridium ventricosum [misapplied in Hawai'i]

vernacular: nitgrass

Distribution of Gastridium phleoides in Hawai'i.

Glyceria

Glyceria notata Chevall.

synonyms: Glyceria fluitans, Panicularia fluitans

vernacular: Plaited Mannagras

Distribution of Glyceria notata in Hawai'i.

Hemarthria

Hemarthria altissima (Poir.) Stapf & C.E.Hubb.

vernacular: limpo grass, bigalta, greenalta

Distribution of Hemarthria altissima in Hawai'i.

Heteropogon

Heteropogon contortus (L.) P.Beauv. ex Roem. & Schult.

vernacular: pili, pili grass, tanglehead, lule

Distribution of Heteropogon contortus in Hawai'i.

Holcus

Holcus lanatus L.

vernacular: velvet grass, Yorkshire fog, mesquite

Distribution of Holcus lanatus in Hawai'i.

Hordeum

Hordeum murinum L. subsp. leporinum (Link) Arcang.

synonyms: Hordeum leporinum

vernacular: barley, pale

Distribution of Hordeum murinum subsp. leporinum in Hawai'i.

Hordeum vulgare L. subsp. vulgare

synonyms: Hordeum sativum

vernacular: barley, hua pale

Distribution of Hordeum vulgare subsp. vulgare in Hawai'i.

Hyparrhenia

Hyparrhenia dregeana (Nees) Stapf ex Stent

vernacular: thatching grass, jaragua

Distribution of Hyparrhenia dregeana in Hawai'i.

Hyparrhenia hirta (L.) Stapf

vernacular: white hair thatching grass

Distribution of Hyparrhenia hirta in Hawai'i.

Hyparrhenia rufa (Nees) Stapf var. rufa

synonyms: Andropogon rufus

vernacular: red thatching grass, jaragua, red grass

Distribution of Hyparrhenia rufa var. rufa in Hawai'i.

Imperata

Imperata cylindrica (L.) Raeusch.

vernacular: cogongrass, cogon

Distribution of Imperata cylindrica in Hawai'i.

Isachne

Isachne distichophylla Munro ex Hillebr.

vernacular: 'ohe

Distribution of Isachne distichophylla in Hawai'i.

Isachne pallens Hillebr.

vernacular: no known common names

Distribution of Isachne pallens in Hawai'i.

Ischaemum

Ischaemum aristatum L.

vernacular: no known common names

Distribution of Ischaemum aristatum in Hawai'i.

Ischaemum byrone (Trin.) Hitchc.

synonyms: Spodiopogon byronis, Ischaemum lutescens

vernacular: Hilo ischaemum

Distribution of Ischaemum byrone in Hawai'i.

Ischaemum ciliare Retz.

synonyms: Ischaemum indicum, Ischaemum timorense [misapplied in Hawai'i]

vernacular: Nahiku grass

Distribution of Ischaemum ciliare in Hawai'i.

Ischaemum polystachyum J.Presl

synonyms: Ischaemum digitatum

vernacular: paddle grass

Distribution of Ischaemum polystachyum in Hawai'i.

Janochloa

Janochloa antidotale (Retz.) Zuloaga & Delfini

synonyms: Panicum antidotale

vernacular: giant panic grass

Distribution of Janochloa antidotale in Hawai'i.

Koeleria

Koeleria glomerata Kunth

synonyms: Trisetum glomeratum

vernacular: pili uka, he'upueo [Hawai'i], mountain pili

Distribution of Koeleria glomerata in Hawai'i.

Koeleria inaequalis (Whitney) Barberá, Quintanar, Soreng & P.M.Peterson

synonyms: Trisetum inaequale

vernacular: no known common names

Distribution of Koeleria inaequalis in Hawai'i.

Koeleria macrantha (Ledeb.) Schult.

synonyms: Koeleria nitida

vernacular: junegrass

Distribution of Koeleria macrantha in Hawai'i.

Lachnagrostis

Lachnagrostis filiformis (G.Forst.) Trin.

synonyms: Agrostis avenacea, Agrostis retrofracta, Calamagrostis forsteri

vernacular: He'upueo, blown grass

Distribution of Lachnagrostis filiformis in Hawai'i.

Lolium

Lolium arundinaceum (Schreb.) Darbysh.

synonyms: Festuca arundinacea, Festuca elatior, Schedonorus arundinaceus

vernacular: tall fescue

Distribution of Lolium arundinaceum in Hawai'i.

Lolium multiflorum Lam.

synonyms: Lolium italicum

vernacular: Italian ryegrass, annual ryegrass

Distribution of Lolium multiflorum in Hawai'i.

Lolium perenne L.

vernacular: perennial ryegrass

Distribution of Lolium perenne in Hawai'i.

Melinis

Melinis minutiflora P.Beauv.

vernacular: molasses grass

Distribution of Melinis minutiflora in Hawai'i.

Melinis repens (Willd.) Zizka

synonyms: Rhynchelytrum repens, Tricholaena repens, Tricholaena rosea

vernacular: Natal redtop, Natal grass

Distribution of Melinis repens in Hawai'i.

Melinis scabrida (K.Schum.) Hack.

vernacular: no known common names

Distribution of Melinis scabrida in Hawai'i.

Microlaena

Microlaena stipoides (Labill.) R.Br.

synonyms: Ehrharta stipoides

vernacular: meadow ricegrass, Ehrharta, Ersty

Distribution of Microlaena stipoides in Hawai'i.

Miscanthus

Miscanthus floridulus (Labill.) Warb. ex K.Schum. & Lauterb.

vernacular: Pacific island silvergrass, giant miscanthus

Distribution of Miscanthus floridulus in Hawai'i.

Moorochloa

Moorochloa eruciformis (Sm.) Veldkamp

vernacular: sweet signal grass

Distribution of Moorochloa eruciformis in Hawai'i.

Muhlenbergia

Muhlenbergia microsperma (DC.) Kunth

vernacular: littleseed muhly

Distribution of Muhlenbergia microsperma in Hawai'i.

Nassella

Nassella cernua (Stebbins & Love) Barkworth

synonyms: Stipa cernua

vernacular: needlegrass

Distribution of Nassella cernua in Hawai'i.

Oloptum

Oloptum miliaceum (L.) Röser & Hamasha

synonyms: Piptatherum miliaceum, Oryzopsis miliacea, Stipa miliacea, Achnatherum miliaceum

vernacular: smilo grass

Distribution of Oloptum miliaceum in Hawai'i.

Oplismenus

Oplismenus compositus (L.) P.Beauv.

vernacular: sparse-flower basketgrass

Distribution of Oplismenus compositus in Hawai'i.

Oplismenus hirtellus (L.) P.Beauv. subsp. hirtellus

synonyms: Oplismenus oahuensis, Oplismenus hirtellus subsp. undulatifolius [misapplied in Hawai'i], Oplismenus undulatifolius [misapplied in Hawai'i], Panicum oahuaense

vernacular: basketgrass, honohono, honohono maoli, honohono kukui

Distribution of Oplismenus hirtellus subsp. hirtellus in Hawai'i.

Panicum

Panicum beecheyi Hook. & Arn.

synonyms: Panicum kauaiense

vernacular: no known common names

Distribution of Panicum beecheyi in Hawai'i.

Panicum coloratum L.

synonyms: Panicum bambastii

vernacular: blue panic grass

Distribution of Panicum coloratum in Hawai'i.

Panicum dichotomiflorum Michx.

vernacular: fall panicum

Distribution of Panicum dichotomiflorum in Hawai'i.

Panicum fauriei Hitchc.

synonyms: Panicum annuale, Panicum carteri, Panicum ninoleense, Panicum sylvanum

vernacular: no known common names

Distribution of Panicum fauriei in Hawai'i.

Panicum konaense Whitney & Hosaka

synonyms: Panicum cookei

vernacular: no known common names

Distribution of Panicum konaense in Hawai'i.

Panicum lineale H.St.John

vernacular: no known common names

Distribution of Panicum lineale in Hawai'i.

Panicum longivaginatum H.St.John

vernacular: no known common names

Distribution of Panicum longivaginatum in Hawai'i.

Panicum nephelophilum Gaudich.

synonyms: Panicum havaiense, Panicum kaalaense

vernacular: konakona

Distribution of Panicum nephelophilum in Hawai'i.

Panicum niihauense H.St.John

vernacular: lau'ehu

Distribution of Panicum niihauense in Hawai'i.

Panicum pellitum Trin.

synonyms: Panicum affine, Panicum colliei, Panicum gossypinum, Panicum pellitoides, Panicum pseudagrostis

vernacular: kāi'oi'o

Distribution of Panicum pellitum in Hawai'i.

Panicum ramosius Hitchc.

vernacular: no known common names

Distribution of Panicum ramosius in Hawai'i.

Panicum repens L.

vernacular: torpedo grass, quack grass, wainaku grass

Distribution of Panicum repens in Hawai'i.

Panicum tenuifolium Hook. & Arn.

synonyms: Panicum molokaiense

vernacular: mountain pili

Distribution of Panicum tenuifolium in Hawai'i.

Panicum torridum Gaudich.

synonyms: Panicum cinereum, Panicum nubigenum, Panicum montanum, Neurachne montana

vernacular: kākonakona, hākonakona

Distribution of Panicum torridum in Hawai'i.

Panicum xerophilum (Hildebr.) Hitchc.

synonyms: Panicum cornae, Panicum heupueo

vernacular: kākonakona, he'upueo [Ni'ihau]

Distribution of Panicum xerophilum in Hawai'i.

Pappophorum

Pappophorum bicolor E.Fourn.

vernacular: pink pappusgrass

Distribution of Pappophorum bicolor in Hawai'i.

Paspalum

Paspalum arundinaceum Poir.

vernacular: cane paspalum

Distribution of Paspalum arundinaceum in Hawai'i.

Paspalum conjugatum P.J.Bergius

vernacular: Hilo grass, mau‘u Hilo

Distribution of Paspalum conjugatum in Hawai'i.

Paspalum dilatatum Poir.

vernacular: dallis grass, Australian water grass

Distribution of Paspalum dilatatum in Hawai'i.

Paspalum distichum L.

vernacular: seashore paspalum

Distribution of Paspalum distichum in Hawai'i.

Paspalum fimbriatum Kunth

vernacular: Panama paspalum, fimbriate paspalum

Distribution of Paspalum fimbriatum in Hawai'i.

Paspalum jesuiticum Parodi

vernacular: jesuit grass

Distribution of Paspalum jesuiticum in Hawai'i.

Paspalum langei (E.Fourn.) Nash

vernacular: rustyseed paspalum

Distribution of Paspalum langei in Hawai'i.

Paspalum macrophyllum Kunth

vernacular: big-leaf paspalum

Distribution of Paspalum macrophyllum in Hawai'i.

Paspalum malacophyllum Trin.

vernacular: ribbed paspalum

Distribution of Paspalum malacophyllum in Hawai'i.

Paspalum mandiocanum Trin. var. mandiocanum

vernacular: broad-leaved paspalum

Distribution of Paspalum mandiocanum var. mandiocanum in Hawai'i.

Paspalum minus E.Fourn.

vernacular: small bahia grass

Distribution of Paspalum minus in Hawai'i.

Paspalum notatum Flüggé

vernacular: bahia, bahia grass, notatum grass

Distribution of Paspalum notatum in Hawai'i.

Paspalum paniculatum L.

vernacular: Russell River Grass, panicled paspalum

Distribution of Paspalum paniculatum in Hawai'i.

Paspalum pilosum Lam.

synonyms: Paspalum unispicatum [misapplied in Hawai'i]

vernacular: hairy paspalum

Distribution of Paspalum pilosum in Hawai'i.

Paspalum plicatulum Michx.

vernacular: brown seed paspalum, Rodd's Bay

Distribution of Paspalum plicatulum in Hawai'i.

Paspalum scrobiculatum L.

synonyms: Paspalum orbiculare, Paspalum commersonii

vernacular: mau'u laiki, ricegrass, dutch millet, koda millet

Distribution of Paspalum scrobiculatum in Hawai'i.

Paspalum urvillei Steud.

synonyms: Paspalum larranagai

vernacular: vasey grass

Distribution of Paspalum urvillei in Hawai'i.

Paspalum vaginatum Sw.

vernacular: large seashore paspalum

Distribution of Paspalum vaginatum in Hawai'i.

Paspalum virgatum L.

vernacular: sword grass, green paspalum

Distribution of Paspalum virgatum in Hawai'i.

Pentapogon

Pentapogon crinitus (L.f.) P.M.Peterson, Romasch. & Soreng

synonyms: Dichelachne crinita

vernacular: long hair plume grass

Distribution of Pentapogon crinitus in Hawai'i.

Pentapogon micranthus (Cav.) P.M.Peterson, Romasch. & Soreng

synonyms: Dichelachne micrantha, Dichelachne sciurea, Apera interrupta [misapplied in Hawai'i]

vernacular: purple plume grass

Distribution of Pentapogon micranthus in Hawai'i.

Phalaris

Phalaris aquatica L.

synonyms: Phalaris bulbosa, Phalaris stenoptera, Phalaris tuberosa, Phalaris tuberosa var. stenoptera

vernacular: harding grass

Distribution of Phalaris aquatica in Hawai'i.

Phalaris minor Retz.

vernacular: small canary grass, bulbous canarygrass

Distribution of Phalaris minor in Hawai'i.

Phleum

Phleum pratense L.

vernacular: timothy

Distribution of Phleum pratense in Hawai'i.

Phyllostachys

Phyllostachys aurea (André) Rivière & C.Rivière

vernacular: golden bamboo, dwarf bamboo

Distribution of Phyllostachys aurea in Hawai'i.

Phyllostachys nigra (Lodd. ex Lindl.) Munro var. henonis (Mitford) Rendle

vernacular: black bamboo

Distribution of Phyllostachys nigra var. henonis in Hawai'i.

Poa

Poa annua L.

vernacular: annual bluegrass

Distribution of Poa annua in Hawai'i.

Poa mannii Munro ex Hillebr.

vernacular: no known common names

Distribution of Poa mannii in Hawai'i.

Poa pratensis L.

vernacular: Kentucky bluegrass, perennial bluegrass

Distribution of Poa pratensis in Hawai'i.

Poa sandvicensis (Reichardt) Hitchc.

synonyms: Poa longiradiata

vernacular: no known common names

Distribution of Poa sandvicensis in Hawai'i.

Poa siphonoglossa Hack.

vernacular: no known common names

Distribution of Poa siphonoglossa in Hawai'i.

Polypogon

Polypogon fugax Nees ex Steud.

synonyms: Polypogon interruptus [misapplied in Hawai'i], Aspera interrupta [misapplied in Hawai'i], Andropogon luteolus [misapplied in Hawai'i], Polypogon lutosus [misapplied in Hawai'i], Polypogon littoralis [misapplied in Hawai'i]

vernacular: ditch polypogon

Distribution of Polypogon fugax in Hawai'i.

Polypogon monspeliensis (L.) Desf.

vernacular: rabbitfoot grass, Montpelier beardgrass

Distribution of Polypogon monspeliensis in Hawai'i.

Polypogon viridis (Gouan) Breistr.

synonyms: Agrostis kauaiensis, Agrostis verticillata, Agrostis semiverticillata

vernacular: water bent

Distribution of Polypogon viridis in Hawai'i.

Rytidosperma

Rytidosperma biannulare (Zotov) Connor & Edgar

synonyms: Dantonia biannulare, Danthonia semiannularis [misapplied in Hawai'i], Rytidosperma semiannulare [misapplied in Hawai'i]

vernacular: Tasmanian wallaby grass

Distribution of Rytidosperma biannulare in Hawai'i.

Rytidosperma penicillatum (Labill.) Connor & Edgar

synonyms: Danthonia pilosa, Rytidosperma pilosum

vernacular: hairy oatgrass, wallaby grass

Distribution of Rytidosperma penicillatum in Hawai'i.

Saccharum

Saccharum spontaneum L.

synonyms: Saccharum biflorum

vernacular: wild cane

Distribution of Saccharum spontaneum in Hawai'i.

Saccharum sinense Roxb.

vernacular: uba cane

Distribution of Saccharum x sinense in Hawai'i.

Sacciolepis

Sacciolepis indica (L.) Chase

synonyms: Sacciolepis contracta

vernacular: Glenwood grass

Distribution of Sacciolepis indica in Hawai'i.

Schizachyrium

Schizachyrium microstachyum (Desv.) Roseng., B.R.Arrill. & Izag.

synonyms: Schizachyrium condensatum [misapplied in Hawai'i], Andropogon glomeratus [misapplied; usage before 1990]

vernacular: beardgrass

Distribution of Schizachyrium microstachyum in Hawai'i.

Schizachyrium sanguineum (Retz.) Alston

synonyms: Schizachyrium scoparium [misapplied in Hawai'i]

vernacular: crimson bluestem

Distribution of Schizachyrium sanguineum in Hawai'i.

Setaria

Setaria adhaerens (Forssk.) Chiov.

synonyms: Setaria verticillata [misapplied in Hawai'i], Chaetochloa verticillata [misapplied in Hawai'i]

vernacular: sticky foxtail, mau‘u pilipili, bristly foxtail

Distribution of Setaria adhaerens in Hawai'i.

Setaria flavida (Retz.) Veldkamp

synonyms: Paspalidium distans, Setaria distans, Panicum caespitosum, Paspalidium caespitosum, Paspalidium radiatum

vernacular: yellow paspalidium

Distribution of Setaria flavida in Hawai'i.

Setaria italica (L.) P.Beauv.

synonyms: Chaetochloa italica

vernacular: foxtail millet

Distribution of Setaria italica in Hawai'i.

Setaria palmifolia (J.Koenig) Stapf

synonyms: Chaetochloa palmifolia, Panicum palmifolium, Panicum plicatum

vernacular: palmgrass

Distribution of Setaria palmifolia in Hawai'i.

Setaria parviflora (Poir.) Kerguélen

synonyms: Setaria geniculata, Setaria gracilis, Setaria glauca [misapplied in Hawai'i], Setaria lutescens [misapplied in Hawai'i], Setaria pumila [misapplied in Hawai'i], Chaetochloa lutescens [misapplied in Hawai'i], Chaetochloa geniculata

vernacular: yellow foxtail, perennial foxtail, mau'u kaleponi

Distribution of Setaria parviflora in Hawai'i.

Setaria sphacelata (Schumach.) Stapf & C.E.Hubb. ex Moss

synonyms: Setaria anceps

vernacular: giant foxtail, kazungula, African foxtail

Distribution of Setaria sphacelata in Hawai'i.

Sorghum

Sorghum bicolor (L.) Moench nothosubsp. drummondii (Nees ex Steud.) de Wet ex Davidse

synonyms: Sorghum x drummondii, Sorghum vulgare var. sudanense, Andropogon sorghum subsp. sudanensis, Holcus sorghum subsp. sudanensis, Andropogon sudanensis

vernacular: sudan grass

Distribution of Sorghum bicolor nothosubsp. drummondii in Hawai'i.

Sorghum halepense (L.) Pers.

synonyms: Holcus halepensis

vernacular: Johnson grass

Distribution of Sorghum halepense in Hawai'i.

Sporobolus

Sporobolus africanus (Poir.) Robyns & Tournay

synonyms: Sporobolus capensis

vernacular: African ratstail, African dropseed, rat-tail, smutgrass, parramatta Grass

Distribution of Sporobolus africanus in Hawai'i.

Sporobolus coromandelianus (Retz.) Kunth

vernacular: Indian whorled dropseed

Distribution of Sporobolus coromandelianus in Hawai'i.

Sporobolus diandrus (Retz.) P.Beauv.

synonyms: Sporobolus diander

vernacular: Indian dropseed

Distribution of Sporobolus diandrus in Hawai'i.

Sporobolus domingensis (Trin.) Kunth

vernacular: coral dropseed

Distribution of Sporobolus domingensis in Hawai'i.

Sporobolus elongatus R.Br.

synonyms: Sporobolus pyramidalis [misapplied in Hawai'i]

vernacular: loose-flower rattail, New Zealand timothy

Distribution of Sporobolus elongatus in Hawai'i.

Sporobolus fertilis (Steud.) Clayton

vernacular: golden flower ratstail, giant parramatta grass, Bloomsburry grass

Distribution of Sporobolus fertilis in Hawai'i.

Sporobolus indicus (L.) R.Br.

synonyms: Sporobolus berteroanus, Sporobolus poiretii

vernacular: West Indian dropseed, smutgrass

Distribution of Sporobolus indicus in Hawai'i.

Sporobolus pyramidatus (Lam.) Hitchc.

synonyms: Sporobolus piliferus [misapplied in Hawai'i]

vernacular: whorled dropseed, Madagascar dropseed

Distribution of Sporobolus pyramidatus in Hawai'i.

Sporobolus tenuissimus (Mart. ex Schrank) Kuntze

vernacular: tropical dropseed

Distribution of Sporobolus tenuissimus in Hawai'i.

Sporobolus virginicus (L.) Kunth

synonyms: Vilfa virginica

vernacular: 'aki'aki, mahiki, māhikihiki, mānienie 'aki'aki, mānienie māhikihiki, seashore rushgrass

Distribution of Sporobolus virginicus in Hawai'i.

Stenotaphrum

Stenotaphrum secundatum (Walter) Kuntze

synonyms: Stenotaphrum americanum

vernacular: St. Augustine grass, buffalo grass, manienie akiaki, 'aki'aki haole

Distribution of Stenotaphrum secundatum in Hawai'i.

Stolonochloa

Stolonochloa pygmaea (R.Br.) E.J.Thomps.

vernacular: pygmy panic grass

Distribution of Stolonochloa pygmaea in Hawai'i.

Themeda

Themeda villosa (Poir.) A.Camus

synonyms: Themeda gigantea

vernacular: Lyon's grass

Distribution of Themeda villosa in Hawai'i.

Thysanolaena

Thysanolaena latifolia (Roxb. ex Hornem.) Honda

vernacular: bamboo grass, tiger grass, Nepalese broom grass

Distribution of Thysanolaena latifolia in Hawai'i.

Tragus

Tragus berteronianus Schult.

vernacular: bur grass, Bertero goatgrass

Distribution of Tragus berteronianus in Hawai'i.

Urochloa

Urochloa arrecta (Hack.) Morrone & Zuloaga

vernacular: hairless California grass, Tanner grass

Distribution of Urochloa arrecta in Hawai'i.

Urochloa brizantha (A.Rich.) R.D.Webster

synonyms: Brachiaria brizantha

vernacular: bread grass, palisade grass

Distribution of Urochloa brizantha in Hawai'i.

Urochloa distachyos (L.) T.Q.Nguyen

synonyms: Urochloa subquadripara, Brachiaria subquadripara, Urochloa distachya, Brachiaria distachya

vernacular: green summer grass, cori grass, dwarf signal grass

Distribution of Urochloa distachyos in Hawai'i.

Urochloa eminii (Mez) Davidse

synonyms: Brachiaria decumbens, Brachiaria ruziziensis, Urochloa decumbens, Urochloa ruziziensis

vernacular: signal grass

Distribution of Urochloa eminii in Hawai'i.

Urochloa glumaris (Trin.) Veldkamp

synonyms: Brachiaria paspaloides

vernacular: glumey signal grass

Distribution of Urochloa glumaris in Hawai'i.

Urochloa maxima (Jacq.) R.D.Webster

synonyms: Megathyrsus maximus, Panicum maximum

vernacular: Guinea grass, mini-guinea, fiberglass grass

Distribution of Urochloa maxima in Hawai'i.

Urochloa mutica (Forssk.) T.Q.Nguyen

synonyms: Brachiaria mutica, Panicum barbinode, Panicum molle, Panicum muticum, Panicum purpurascens

vernacular: California grass, para grass

Distribution of Urochloa mutica in Hawai'i.

Urochloa plantaginea (Link) R.D.Webster

synonyms: Brachiaria plantaginea

vernacular: plantain signal grass

Distribution of Urochloa plantaginea in Hawai'i.

Urochloa ramosa (L.) T.Q.Nguyen

vernacular: browntop millet

Distribution of Urochloa ramosa in Hawai'i.

Urochloa reptans (L.) Stapf

synonyms: Brachiaria reptans, Panicum prostratum, Panicum reptans

vernacular: sprawling signalgrass

Distribution of Urochloa reptans in Hawai'i.

Zizania

Zizania latifolia (Griseb.) Hance ex F.Muell.

vernacular: wild rice

Distribution of Zizania latifolia in Hawai'i.

Zoysia

Zoysia matrella (L.) Merr.

vernacular: zoysia grass

Distribution of Zoysia matrella in Hawai'i.

Zoysia pacifica (Goudsw.) M.Hotta & Kuroki

synonyms: Zoysia matrella var. pacifica, Zoysia tenuifolia

vernacular: narrow leaf zoysia

Distribution of Zoysia pacifica in Hawai'i.