List of vascular plants of Norfolk Island

This is a list of vascular plants that are indigenous to, or naturalised on, Norfolk Island. The list is based on the most recent authoritative treatment of Norfolk Island, the 1994 "Flora of Australia" 49. That source is dated in places; for example its classification of the flowering plants uses the Cronquist system, aspects of which are no longer accepted. This list therefore differs from the "Flora of Australia" treatment in several areas; these are footnoted.

List of flora of Norfolk Island

Norfolk Island has 523 taxa of vascular plants, 136 of which are indigenous, and 387 naturalised. Forty-four of the indigenous taxa are endemic. There are two endemic genera, "Ungeria" and "Streblorrhiza".

Eudicotyledons

The eudicots"Flora of Australia" uses Cronquist's Dicotyledonae, but this is no longer considered a "good" group; here we use the eudicot group.] are represented on Norfolk Island by 75 families, 220 genera, and 287 species.

;Acanthaceae
* "Hypoestes phyllostachya"
* "Ruellia ciliosa" (Naturalised)These taxa did not appear in "Flora of Australia", but were reported as new records for Norfolk Island in de Lange "et al" (2005).]

;Aizoaceae
* "Carpobrotus glaucescens"
* "Tetragonia implexicoma"
* "Tetragonia tetragonioides"

;Amaranthaceae"Flora of Australia" listed a number of species under family Chenopodiaceae"; these are here listed under Amaranthaceae in accordance with the APG II system.]
* "Achyranthes arborescens" (Endemic)
* "Achyranthes aspera"
* "Achyranthes margaretarum" (Endemic)"Achyranthes margaretarum" is a new species that was split off from "A. arborescens" in 2001.]
* "Alternanthera sessilis" (Possibly indigenous)
* "Amaranthus blitum" (Naturalised)
* "Amaranthus hybridus" (Naturalised)
* "Amaranthus virids" (Naturalised)
* "Atriplex cinerea"The record of "Atriplex cinerea" on Norfolk Island was excluded in "Flora of Australia", but has since been admitted.]
* "Atriplex semibaccata" (Naturalised)
* "Chenopodium album" (Naturalised)
* "Chenopodium ambrosioides" (Naturalised)
* "Chenopodium murale" (Naturalised)
* "Sarcocornia quinqueflora"

;Anacardiaceae
* "Schinus terebinthifolius" (Naturalised)

;Apiaceae
* "Apium graveolens" (Naturalised)
* "Centella asiatica" (Naturalised)
* "Ciclospermum leptophyllum" (Naturalised)
* "Coriandrum sativum" (Naturalised)
* "Daucus glochidiatus" (Naturalised)
* "Foeniculum vulgare" (Naturalised)
* "Petroselinum crispum" (Naturalised)
* "Torilis nodosa" (Naturalised)

;Apocynaceae
* "Alyxia gynopogon" (Endemic)
* "Melodinus baueri" (Endemic)
* "Vinca major" (Naturalised)

;Araliaceae
* "Delarbrea paradoxa" (Naturalised)
* "Meryta angustifolia" (Endemic)
* "Meryta latifolia" (Endemic)
* "Schefflera actinophylla" (Naturalised)
* "Tetrapanax papyrifer" (Naturalised)

;Asclepiadaceae
* "Gomphocarpus physocarpus" (Naturalised)
* "Tylophora biglandulosa"

;Asteraceae
* "Ageratina riparia" (Naturalised)
* "Ageratum conyzoides" (Naturalised)
* "Arctotheca calendula" (Naturalised)
* "Argyranthemum frutescens" (Naturalised)
* "Aster subulatus" (Naturalised)
* "Bidens pilosa" (Naturalised)
* "Calendula officinalis" (Naturalised)
* "Carduus pycnocephalus" (Naturalised)
* "Carduus tenuiflorus" (Naturalised)
* "Centaurea melitensis" (Naturalised)
* "Conyza bonariensis" (Naturalised)
* "Conyza sumatrensis" (Naturalised)
* "Cotula australis" (Naturalised)
* "Crassocephalum crepidioides" (Naturalised)
* "Erechtites valerianifolia" (Naturalised)
* "Erigeron karvinskianus" (Naturalised)
* "Euchiton involucratus" (Naturalised)At least one putative collection of "Euchiton involucratus" from Norfolk Island has now been identified as "Euchiton sphaericus". Whether "E. involucratus" also occurs on Norfolk Island is now uncertain.]
* "Euchiton sphaericus"
* "Euryops chrysanthemoides" (Naturalised)
* "Erechtites hieraciifolia" (Naturalised)A localised population of "Erechtites hieraciifolia" was naturalised on Norfolk Island in 1987, but the species has not been seen there since 1989.]
* "Facelis retusa" (Naturalised)
* "Galinsoga parviflora" (Naturalised)
* "Gamochaeta calviceps" (Naturalised)
* "Gamochaeta coarctata" (Naturalised)
* "Gamochaeta purpurea" (Naturalised)
* "Hypochaeris glabra" (Naturalised)
* "Hypochaeris radicata" (Naturalised)
* "Montanoa hibiscifolia" (Naturalised)
* "Picris burbidgeae" (Naturalised)"Picris burbidgeae" was listed in "Flora of Australia" as "P. hieracoides".]
* "Pseudognaphalium luteoalbum"
* "Senecio australis""Flora of Australia" listed "Senecio australis" as endemic to Norfolk Island, but indigenous populations have since been found in New Zealand.]
* "Senecio evansianus" (Endemic)
* "Senecio hooglandia" (Endemic)
* "Sigesbeckia orientalis" (Naturalised)
* "Silybum marianum" (Naturalised)
* "Soliva pterosperma" (Naturalised)
* "Sonchus oleraceus" (Naturalised)
* "Tagetes minuta" (Naturalised)
* "Taraxacum officinale" (Naturalised)
* "Tragopogon porrifolius" (Naturalised)
* "Wollastonia biflora"

;Basellaceae
* "Anredera cordifolia" (Naturalised)

;Bignoniaceae
* "Tecomaria capensis" (Naturalised)

;Boraginaceae
* "Cynoglossum australe" (Naturalised)
* "Echium plantagineum" (Naturalised)

;Brassicaceae
* "Brassica juncea" (Naturalised)
* "Brassica napus" (Naturalised)
* "Capsella bursa-pastoris" (Naturalised)
* "Cardamine hirsuta" (Naturalised)
* "Coronopus didymus" (Naturalised)
* "Lepidium bonariense" (Naturalised)
* "Lobularia maritima" (Naturalised)
* "Matthiola incana" (Naturalised)
* "Rapistrum rugosum" (Naturalised)
* "Rorippa nasturtium-aquaticum" (Naturalised)
* "Sisymbrium officinale" (Naturalised)
* "Sisymbrium orientale" (Naturalised)

;Caesalpiniaceae
* "Caesalpinia bonduc"
* "Caesalpinia decapetala" (Naturalised)
* "Caesalpinia major" (Naturalised)
* "Chamaecrista rotundifolia" (Naturalised)
* "Senna septemtrionalis" (Naturalised)

;Campanulaceae
* "Lobelia anceps"
* "Pratia purpurascens" (Naturalised)
* "Wahlenbergia gracilis"
* "Wahlenbergia littoricola" subsp. "vernicosa"
* "Wahlenbergia violaceae" (Status uncertain, most likely naturalised)

;Cannabaceae"Celtis paniculata" was treated under Ulmaceae in "Flora of Australia"; it is here treated as Cannabaceae in accordance with the APG II system.]
* "Celtis paniculata"

;Capparaceae
* "Capparis nobilis" (Endemic)

;Caprifoliaceae
* "Lonicera japonica" (Naturalised)

;Caryophyllaceae
* "Cerastium fontanum" subsp. "vulgare" (Naturalised)
* "Cerastium glomeratum" (Naturalised)
* "Paronychia brasiliana" (Naturalised)
* "Petrorhagia velutina" (Naturalised)
* "Polycarpon tetraphyllum" (Naturalised)
* "Sagina apetala" (Naturalised)
* "Silene gallica" (Naturalised)
* "Stellaria media" (Naturalised)

;Casuarinaceae
* "Casuarina glauca"

;Celastraceae
* "Elaeodendron curtipendulum"

;Convolvulaceae
* "Calystegia affinis" (Endemic)
* "Calystegia soldanella"
* "Dichondria micrantha" (Naturalised)
* "Dichondra repens"
* "Ipomoea alba" (Naturalised)
* "Ipomoea cairica" (Naturalised)"Ipomoea cairica" is listed in "Flora of Australia" as naturalised, but de Lange "et al" (2005) suggest that it may be indigenous.]
* "Ipomoea indica" (Naturalised)
* "Ipomoea pes-caprae" subsp. "brasiliensis"

;Corynocarpaceae
* "Corynocarpus laevigatus" (Naturalised)

;Crassulaceae
* "Bryophyllum delagoaense" (Naturalised)
* "Bryophyllum pinnatum" (Naturalised)
* "Crassula multicava" subsp. "multicava" (Naturalised)

;Cucurbitaceae
* "Cucumis anguria" (Naturalised)
* "Diplocyclos palmatus" subsp. "affinis"
* "Sicyos australis"
* "Zehneria baueriana"

;Euphorbiaceae
* "Acalypha wilkesiana" (Naturalised)
* "Baloghia inophylla"
* "Breynia disticha" (Naturalised)
* "Euphorbia cyathophora" (Naturalised)
* "Euphorbia norfolkiana" (Endemic)
* "Euphorbia obliqua"
* "Euphorbia peplus" (Naturalised)
* "Euphorbia prostrata" (Naturalised)
* "Excoecaria agallocha"
* "Homalanthus populifolius" (Naturalised)"Flora of Australia" treated "Homalanthus populifolius" as indigenous, but in 1904 Joseph Maiden stated that it had been introduced in a consignment of plants from Lord Howe Island.]
* "Phyllanthus tenellus" (Naturalised)
* "Ricinus communis" (Naturalised)

;Fabaceae
* "Canacalia rosea"
* "Castanospermum australe" (Naturalised)
* "Chamaecytisus palmensis" (Naturalised)
* "Crotalaria agatiflora" (Naturalised)
* "Desmodium incanum" (Naturalised)
* "Desmodium tortuosum" (Naturalised)
* "Dipogon lignosus" (Naturalised)
* "Erythrina caffra" (Naturalised)
* "Erythrina speciosa" (Naturalised)
* "Glycone microphylla" (Naturalised)
* "Indigofera suffruticosa" (Naturalised)
* "Lablab purpureus" (Naturalised)
* "Lotus angustissimus" (Naturalised)
* "Lupinus cosentinii" (Naturalised)
* "Medicago lupulina" (Naturalised)
* "Medicago polymorpha" (Naturalised)
* "Melilotus indicus" (Naturalised)
* "Millettia australis"
* "Neotonia wightii" (Naturalised)
* "Pueraria lobata" (Naturalised)
* "Streblorrhiza speciosa" (Endemic)"Streblorrhiza" and "Ungeria" are endemic genera.]
* "Teline monspessulana" (Naturalised)
* "Trifolium campestre" (Naturalised)
* "Trifolium dubium" (Naturalised)
* "Trifolium glomeratum" (Naturalised)
* "Trifolium suffocatum" (Naturalised)
* "Vicia hirsuta" (Naturalised)
* "Vicia sativa" subsp. "nigra" (Naturalised)
* "Vicia tetrasperma" (Naturalised)
* "Vigna marina"

;Frankeniaceae
* "Frankenia pulverulenta" (Naturalised)

;Fumariaceae
* "Fumaria muralis" (Naturalised)

;Gentianaceae
* "Centaurium tenuiflorum" (Naturalised)

;Geraniaceae
* "Erodium moschatum" (Naturalised)
* "Geranium dissectum" (Naturalised)
* "Geranium gardneri" (Naturalised)"Flora of Australia" lists "Geranium gardneri" as naturalised in Norfolk Island, but the variant of "G. gardneri" that occurs on Norfolk Island has since been published as "G. gardneri" in de Lange "et al" (2005)]
* "Pelargonium australe" (Naturalised)
* "Pelargonium panduriforme" (Naturalised)

;Lamiaceae
* "Lavandula dentata" (Naturalised)
* "Marrubium vulgare" (Naturalised)
* "Mentha" × "piperita (Naturalised)
* "Mentha spicata" (Naturalised)
* "Salvia coccinea" (Naturalised)
* "Salvia verbenaca" (Naturalised)
* "Stachys arvensis" (Naturalised)

;Lauraceae
* "Cinnamomum camphora" (Naturalised)
* "Cryptocarya triplenervis" (Naturalised)"Cryptocarya triplenervis" was excluded from "Flora of Australia" as a probable erroneous collection, but has since been collected a number of times, and was admitted by de Lange "et al" (2005).]
* "Persea americana" (Naturalised)

;Linaceae
* "Linum marginale" (Naturalised)
* "Linum trigynum" (Naturalised)

;Loranthaceae
* "Ileostylus micranthus"

;Lythraceae
* "Lythrum hyssopifolia" (Naturalised)

;Malvaceae
* "Abutilon grandifolium" (Naturalised)
* "Abutilon julianae" (Endemic)
* "Hibiscus diversifolius"
* "Hibiscus insularis" (Endemic)
* "Hibiscus pedunculatus" (Naturalised)
* "Hibiscus tiliaceus"
* "Lagunaria patersonia" subsp. "patersonia"
* "Malva parviflora" (Naturalised)
* "Malvastrum coromandelianum" (Naturalised)
* "Modiola caroliniana" (Naturalised)
* "Pavonia hastata" (Naturalised)
* "Sida carpinifolia" (Naturalised)
* "Sida rhombifolia" (Naturalised)

;Meliaceae
* "Dysoxylum bijugum"
* "Melia azedarach" (Naturalised)

;Mimosaceae
* "Acacia dealbata" (Naturalised)
* "Acacia parramattensis" (Naturalised)
* "Paraserianthes lophantha" (Naturalised)

;Moraceae
* "Ficus carica" (Naturalised)
* "Streblus pendulinus"

;Myoporaceae
* "Myoporum obscurum" (Endemic)

;Myrsinaceae
* "Rapanea ralstoniae" (Endemic)

;Myrtaceae
* "Eucalyptus botryoides" (Naturalised)
* "Eucalyptus fibrosa" (Naturalised)
* "Eugenia uniflora" (Naturalised)
* "Metrosideros excelsa" (Natrualised)
* "Metrosideros kermadecensis" (Naturalised)
* "Metrosideros excelsa" x "kermadecensis" (Hybrid of indigenous and naturalised species)
* "Psidium cattleianum" var. "cattleianum" (Naturalised)
* "Psidium cattleianum" var. "littorale" (Naturalised)
* "Psidium guajava" (Naturalised)

;Nyctaginaceae
* "Mirabilis jalapa" (Naturalised)
* "Pisonia brunoniana"

;Ochnaceae
* "Ochna serrulata" (Naturalised)

;Oleaceae
* "Jasminum simplicifolium" subsp. "australiense"
* "Ligustrum lucidum" (Naturalised)
* "Ligustrum sinense" (Naturalised)
* "Olea europaea" subsp. "cuspidata" (Naturalised)

;Onagraceae
* "Oenothera affinis" (Naturalised)
* "Oenothera rosea" (Naturalised)
* "Oenothera stricta" (Naturalised)
* "Oenothera tetraptera" (Naturalised)

;Orobanchaceae
* "Orobanche minor" (Naturalised)

;Oxalidaceae
* "Oxalis chnoodes" (Naturalised)"Flora of Australia" treated all of the "Oxalis" species on Norfolk Island as "Oxalis corniculata". This complex is now usually treated as five distinct species, of which four occur on Norfolk Island.]
* "Oxalis corniculata" (Naturalised)
* "Oxalis debilis" (Naturalised)
* "Oxalis exilis"
* "Oxalis radicosa" (Naturalised)

;Papaveraceae
* "Argemone subfusiformis" (Naturalised)
* "Papaver somniferum" (Naturalised)

;Passifloraceae
* "Passiflora aurantia"
* "Passiflora edulis" (Naturalised)

;Pennantiaceae"Flora of Australia" treated "Pennantia endlicheri" under the Icacinaceae; the monotypic family Pennantiaceae has since been revived.]
* "Pennantia endlicheri" (Endemic)"Pennantia endlicheri" was not listed as endemic in "Flora of Australia", as the Three Kings Island populations of "Pennantia" were then considered members of that species. These are now treated as "P. baylisiana", and "P. endlicheri" is considered endemic to Norfolk Island.]

;Phytolaccaceae
* "Phytolacca octandra" (Naturalised)
* "Rivina humilis" (Naturalised)

;Piperaceae
* "Macropiper excelsum" subsp. "psittacorum"
* "Peperomia tetraphylla"
* "Peperomia urvilleana"

;Pittosporaceae
* "Pittosporum bracteolatum" (Endemic)
* "Pittosporum crassifolium" (Naturalised)
* "Pittosporum undulatum" (Naturalised)

;Plantaginaceae
* "Plantago debilis" (Naturalised)
* "Plantago lanceolata" (Naturalised)
* "Plantago major" (Naturalised)
* "Russelia equisetiformis" (Naturalised)

;Plumbaginaceae
* "Plumbago auriculata" (Naturalised)
* "Plumbago zeylanica"

;Polygalaceae
* "Polygala myrtifolia" (Naturalised)

;Polygonaceae
* "Fallopia convolvulus" (Naturalised)
* "Muehlenbeckia australis"
* "Persicaria decipiens"
* "Rumex brownii" (Naturalised)
* "Rumex conglomeratus" (Naturalised)

;Portulacaceae
* "Portulaca oleracea" (Naturalised)

;Primulaceae
* "Anagallis arvensis" (Naturalised)
* "Samolus repens" var. "stricta"

;Proteaceae
* "Grevillea robusta" (Naturalised)
* "Hakea salicifolia" (Naturalised)
* "Hakea sericea" (Naturalised)
* "Macadamia tetraphylla" (Naturalised)

;Ranunculaceae
* "Clematis dubia" (Endemic)
* "Ranunculus muricatus" (Naturalised)
* "Ranunculus parviflora" (Naturalised)
* "Ranunculus repens" (Naturalised)
* "Ranunculus sessiliflorus" (Naturalised)

;Rosaceae
* "Duchesnea indica" (Naturalised)
* "Eriobotrya japonica" (Naturalised)
* "Rhaphiolepis umbellata" (Naturalised)
* "Rubus fruticosus" (Naturalised)

;Rubiaceae
* "Coffea arabica" (Naturalised)
* "Coprosma baueri" (Endemic)
* "Coprosma pilosa" (Endemic)
* "Pentas lanceolata" (Naturalised)
* "Sherardia arvensis" (Naturalised)

;Rutaceae
* "Citrus jambhiri" (Naturalised)
* "Melicope littoralis" (Endemic)
* "Sarcomelicope simplicifolia" subsp. "simplicifolia"
* "Zanthoxylum pinnatum"

;Santalaceae
* "Exocarpus phyllanthoides" var. "phyllanthoides"

;Sapindaceae
* "Dodonaea viscosa" subsp. "viscosa";Sapotaceae
* "Pouteria costata"

;Scrophulariaceae
* "Calceolaria tripartita" (Naturalised)
* "Misopates orontium" (Naturalised)
* "Verbascum thapsus" (Naturalised)
* "Verbascum virgatum" (Naturalised)
* "Veronica arvensis" (Naturalised)
* "Veronica persica" (Naturalised)
* "Veronica plebeia" (Naturalised)

;Solanaceae
* "Brugmansia suaveolens" (Naturalised)
* "Datura stramonium" (Naturalised)
* "Lycium ferocissimum" (Naturalised)
* "Lycopersicon esculentum" (Naturalised)
* "Nicandra physalodes" (Naturalised)
* "Nicotiana tabacum" (Naturalised)
* "Petunia" × "hybrida" (Naturalised)
* "Physalis peruviana" (Naturalised)
* "Solandra maxima" (Naturalised)
* "Solanum americanum" subsp. "nutans"
* "Solanum aviculare" (Extinct)
* "Solanum bauerianum" (Endemic)
* "Solanum linneanum" (Naturalised)
* "Solanum mauritianum" (Naturalised)

;Sterculiaceae
* "Ungeria floribunda" (Endemic)

;Thymelaeaceae
* "Wikstroemia australis"

;Tiliaceae
* "Triumfetta rhomboidea"

;Urticaceae
* "Boehmeria australis" subsp. "australis""Boehmeria australis" subsp. "australis" was listed as "Boehmeria australis" var. "australis" in "Flora of Australia". It was automatically promoted to subspecies rank when de Lange "et al" (2005) promoted the Kermadec Islands taxon "Boehmeria australia" var. "dealbata" to subspecies rank.] (Endemic)
* "Boehmeria nivea" (Naturalised)
* "Elatostema montanum" (Endemic)
* "Parietaria debilis"
* "Pilea microphylla" (Naturalised)
* "Urtica urens" (Naturalised)

;Verbenaceae
* "Duranta erecta" (Naturalised)
* "Lantana camara" (Naturalised)
* "Verbena bonariensis" (Naturalised)
* "Verbena litoralis" (Naturalised)

;Violaceae
* "Melicytus latifolius" (Endemic)
* "Melicytus remiflorus" subsp. "oblongifolius" (Endemic)
* "Viola betonicifolia" subsp. "nova-guineensis"
* "Viola tricolor" (Naturalised)

;Viscaceae
* "Korthalsella disticha" (Endemic)

Monocotyledons

The Monocotyledons (monocots) are represented on Norfolk Island by 16 families, 81 genera, and 110 species. Most of them are naturalised, with naturalised grasses account for 5 families, 47 genera and 67 species. Of the 43 indigenous species, 9 are endemic.

;Agavaceae
* "Agave americana" (Naturalised)
* "Cordyline obtecta""Flora of Australia" listed "Cordyline obtecta" as endemic, but the Three Kings Island endemic "C. kaspar" has since been reduced to synonymy with "C. obtecta".]
* "Furcraea foetida" (Naturalised)
* "Phormium tenax"

;Alliaceae"Nothoscordum borbonicum" was treated under the Liliaceae in "Flora of Australia"; it is here treated as an Alliaceae in accordance with the APG II system.]
* "Nothoscordum borbonicum" (Naturalised)

;Araceae
* "Colocasia esculenta" (Naturalised)
* "Xanthosoma sagittifolium" (Naturalised)
* "Zantedeschia aethiopica" (Naturalised);Arecaceae
* "Howea forsteriana" (Naturalised)
* "Phoenix canariensis" (Naturalised)
* "Rhopalostylis baueri""Flora of Australia" listed "Rhopalostylis baueri" var. "baueri" as an endemic variety, but the varieties were demoted to synonymy with "R. baueri" in de Lange "et al" (2005). The species is not endemic.]

;Asphodelaceaede Lange "et al" (2005) treats "Aloe maculata" under family Hemerocallidaceae, apparently in error.]
* "Aloe maculata" (Naturalised)

;Cannaceae
* "Canna indica" (Naturalised)

;Colchicaceae
* "Gloriosa superba" (Naturalised)

;Commelinaceae
* "Commelina cyanea"
* "Tradescantia zebrina" (Naturalised)

;Cyperaceae
* "Bolboschoenus fluviatilis"
* "Carex breviculmis"
* "Carex inversa"
* "Carex neesiana" (Endemic)
* "Cyperus albostriatus" (Naturalised)
* "Cyperus gracilis" (Naturalised)
* "Cyperus involucratus" (Naturalised)
* "Cyperus lucidus"
* "Cyperus rotundus" (Naturalised)
* "Eleocharis acuta"
* "Isolepis inundata"
* "Isolepis nodosa"
* "Isolepis cernua" var. "setiformis" (Endemic)"Isolepis cernua" var. "setiformis" appeared in "Flora of Australia" as "?Isolepis sp."]
* "Kyllinga brevifolia"
* "Pycreus polystachyos"
* "Schoenoplectus validus"

;Hemerocallidaceae"Flora of Australia" treated "Dianella intermedia" under the Liliaceae family; it is now treated under the Hemerocallidaceae or Xanthorrhoeaceae family.]
* "Dianella intermedia" (Endemic)

;Iridaceae
* "Anomatheca laxa" (Naturalised)
* "Ferraria crispa" (Naturalised)
* "Gladiolus" × "hortulanus" (Naturalised)
* "Homeria flaccida" (Naturalised)
* "Sisyrinchium micranthum" (Naturalised)
* "Tritonia crocata" (Naturalised)
* "Tritonia lineata" (Naturalised)

;Juncaceae
* "Juncus articulatus" (Naturalised)
* "Juncus australis" (Naturalised)
* "Juncus bufonius" (Naturalised)
* "Juncus continuus"
* "Juncus pallidus" (Naturalised)
* "Juncus usitatus" (Naturalised)

;Liliaceae
* "Alstroemeria pulchella" (Naturalised)
* "Asparagus aethiopicus" (Naturalised)
* "Asparagus plumosis" (Naturalised)
* "Crinum asiaticum" var. "pedunculatum"
* "Lilium formosanum" (Naturalised)

;Limnocharitaceae
* "Hydrocleys nymphoides"

;Orchidaceae
* "Bulbophyllum argyropus"
* "Dendrobium brachypus" (Endemic)
* "Dendrobium macropus" subsp. "macropus" (Endemic)
* "Microtis unifolia"
* "Oberonia titania"
* "Phreatia limenophylax" (Endemic)
* "Phreatia paleata"
* "Taeniophyllum muelleri"
* "Thelymitra longifolia" (Probably indigenous)
* "Tropidia viridifusca"

;Pandanaceae
* "Freycinetia baueriana" (Endemic)"Freycinetia baueriana" was treated as "F. b." subsp. "baueriana" in "Flora of Australia"; it is now given species rank.]

;Poaceae
* "Agrostis avenacea"
* "Aira cupaniana" (Naturalised)
* "Ammophila arenaria" (Naturalised)
* "Anthoxanthum odoratum" (Naturalised)
* "Arundo donax" (Naturalised)
* "Avena fatua" (Naturalised)
* "Avena sativa" (Naturalised)
* "Axonopus fissifolius" (Naturalised)
* "Bothriochloa macra" (Naturalised)
* "Briza maxima" (Naturalised)
* "Briza minor" (Naturalised)
* "Bromus arenarius" (Naturalised)
* "Bromus diandrus" (Naturalised)
* "Bromus hordeaceus" (Naturalised)
* "Bromus scoparius" (Naturalised)
* "Bromus willdenowii" (Naturalised)"Flora of Australia" listed "Bromus catharticus", but these specimens have now been referred to "B. willdenowii".]
* "Catapodium rigidum" (Naturalised)
* "Cenchrus caliculatus" (Possibly extinct)
* "Chloris gayana" (Naturalised)
* "Cortaderia selloana" (Naturalised)
* "Cymbopogon refractus"
* "Cynodon dactylon" (Naturalised)
* "Dactylis glomerata" (Naturalised)
* "Dichelachne crinita"
* "Dichelachne micrantha"
* "Digitaria ciliaris" (Naturalised)
* "Digitaria setigera"
* "Echinochloa crusgalli" (Naturalised)
* "Echinopogon ovatus"
* "Ehrharta erecta" (Naturalised)
* "Eleusine indica" (Naturalised)
* "Elymus multiflorus" subsp. "kingianus""Elymus multiflorus" subsp. "kingianus" was listed at variety rank in "Flora of Australia"; it was promoted in de Lange "et al" (2005).]
* "Elymus scaber""Flora of Australia" listed "Elymus rectisetus", but the Norfolk Island specimens have since been referred to "E. scaber".]
* "Eragrostis brownii" (Naturalised)
* "Hordeum murinum" subsp. "glaucum" (Naturalised)
* "Hordeum murinum" subsp. "leporinum" (Naturalised)
* "Lepturus repens" (Possibly indigenous)
* "Lolium perenne" (Naturalised)
* "Lolium rigidum" var. "rigidum" (Naturalised)
* "Lolium rigidum" var. "rottboellioides" (Naturalised)
* "Melinis minutiflora" (Naturalised)
* "Microlaena stipoides"
* "Oplismenus hirtellus" subsp. "hirtellus""Flora of Australia" listed the "Oplismenus hirtellus"; de Lange "et al" (2005) refined this to subspecies level as "O. h." subsp. "hirtellus" and "O. h." subsp. "imbecillus"]
* "Oplismenus hirtellus" subsp. "imbecillus"
* "Panicum effusum"
* "Panicum maximum" (Naturalised)
* "Paspalum dilatatum" (Naturalised)
* "Paspalum orbiculare""Flora of Australia" excluded "Paspalum orbiculare" because the author was unaware of any recent collections. At least one collection has been made since.]
* "Paspalum scrobiculatum"
* "Pennisetum clandestinum" (Naturalised)
* "Pennisetum purpureum" (Naturalised)
* "Phalaris minor" (Naturalised)
* "Poa annua" (Naturalised)
* "Poa pratensis" (Naturalised)
* "Rhynchelytrum repens" (Naturalised)
* "Rostraria cristata" (Naturalised)
* "Setaria palmifolia" (Naturalised)
* "Setaria pumila" subsp. "pallidefusca" (Naturalised)
* "Setaria verticillata" (Naturalised)
* "Sorghum arundinaceum" (Naturalised)
* "Spinifex sericeus" (Naturalised)
* "Sporobolus africanus" (Naturalised)
* "Sporobolus virginicus"
* "Stenotaphrum secundatum" (Naturalised)
* "Trisetum arduanum" (Naturalised)
* "Vulpia bromoides" (Naturalised)
* "Vulpia myuros" f. "megalura" (Naturalised)

;Pontederiaceae
* "Eichhornia crassipes" (Naturalised)

;Smilacaceae
* "Geitonoplesium cymosum"

;Typhaceae
* "Typha orientalis"

Pinophyta

Two species of Pinophyta (conifers) occur on Norfolk Island: the popular endemic "Araucaria heterophylla" (Norfolk Island Pine), and the naturalised "Cupressus lusitanica".

;Araucariaceae
* "Araucaria heterophylla" (Endemic)

;Cupressaceae
* "Cupressus lusitanica" (Naturalised)

Pteridophyta

The Pteridophyta (ferns) are represented on Norfolk Island by 14 families, 24 genera, and 37 species. Seven species are endemic; none are naturalised.

;Adiantaceae
* "Adiantum diaphanum"
* "Adiantum pubescens"
* "Cheilanthes distans"
* "Cheilanthes sieberi"
* "Pellaea rotundifolia"

;Aspleniaceae
* "Asplenium australasicum" f. "australasicum"
* "Asplenium australasicum" f. "robinsonii"
* "Asplenium difforme"
* "Asplenium dimorphum" (Endemic)
* "Asplenium polyodon"

;Athyriaceae
* "Diplazium assimile"
* "Diplazium australe"
* "Lunathyrium japonicum"

;Azollaceae
* "Azolla pinnata"

;Blechnaceae
* "Blechnum norfolkianum"
* "Doodia aspera"
* "Doodia media"

;Cyatheaceae
* "Cyathea australis" subsp. "norfolkensis" (Endemic
* "Cyathea brownii" (Endemic)

;Davalliaceae
* "Arthropteris tenella"
* "Nephrolepis cordifolia"
* "Nephrolepis flexuosa""Flora of Australia" does not include "Nephrolepis flexuosa", as this name was then considered synonymous with "Nephrolepis cordifolia". It was re-instated as a current species name by de Lange "et al" in 2005.]

;Dennstaedtiaceae
* "Histiopteris incisa"
* "Hypolepis dicksonioides"
* "Hypolepis distans" (Naturalised)
* "Hypolepis tenuifolia"
* "Pteridium esculentum"

;Dryopteridaceae
* "Arachnoides aristata"
* "Lastreopsis calantha" (Endemic)

;Gleicheniaceae
* "Dicranopteris linearis"

;Hymenophyllaceae
* "Cephalomanes bauerianum" (Endemic)
* "Credidomanes endlicherianum"
* "Credidomanes saxifragioides"

;Marattiaceae
* "Marattis salicina"

;Nephrolepidaceae
*"Nephrolepis cordifolia" (Naturalised)

;Polypodiaceae
* "Phymatosorus pustulatus" subsp. "pustulatus"
* "Platycerium bifurcatum"(Naturalised)
* "Pyrrosia confluens"

;Pteridaceae
* "Pteris kingiana" (Endemic)
* "Pteris tremula"
* "Pteris zahlbruckneriana" (Endemic)
* "Pteris vittata" (Naturalised)

;Salviniaceae
* "Salvinia molesta" (Naturalised)

;Thelypteridaceae
* "Christella dentata"
* "Christella parasitica"
* "Macrothelytperis torresiana"

;Vittariaceae
* "Vittaria elongata"

Lycopodiophyta

Norfolk Island has two species of Lycopodiophyta,"Flora of Australia" places Lycopodiaceae and Selaginellaceae in Pteridophyta; in modern taxonomy these are placed in Lycopodiophyta.] the indigenous club moss "Lycopodiella cernua" and the naturalised spikemoss "Selaginella kraussiana".

;Lycopodiaceae
* "Lycopodiella cernua"

;Selaginellaceae
* "Selaginella kraussiana" (Naturalised)

Psilotophyta

Norfolk Island has two species of Psilotophyta."Flora of Australia" places Psilotaceae in Pteridophyta; in modern taxonomy this is placed in Psilotophyta.]

;Psilotaceae
* "Psilotum nudum"
* "Tmesipteris norfolkensis" (Endemic)

Ophioglossophyta

Norfolk Island has one species of Ophioglossophyta."Flora of Australia" places Ophioglossaceae in Pteridophyta; in modern taxonomy this is placed in Ophioglossophyta.]

;Ophioglossaceae
* "Ophioglossum petiolatum"

Notes

References

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