Pacific Island Ecosystems at Risk (PIER)


Report on invasive plant species in Tonga


Appendix 2.

Table 1.   Species that are invasive elsewhere in similar ecosystems but are not known to be present in Tonga
Table 2.  Introduced species that are invasive elsewhere and are also invasive or potentially invasive in Tonga
Table 3.  Species that are reported as invasive or weedy elsewhere and are common or weedy in Tonga
Table 4.  Native and naturalized species that exhibit aggressive behavior


Table 1. Species that are invasive elsewhere in similar ecosystems but are not known to be present in Tonga

Scientific Name Common Names Family Habit
Acacia confusa English: Formosa koa, Formosa acacia; Other: sosigi, shoshigi, sosugi, boiffuring (Guam and CNMI–Chamorro); serepa, soschghi (CNMI–Carolinian); pilampwoia (Pohnpei); ianángi, yanangi (Palau) Fabaceae tree
Acacia farnesiana English:  Ellington curse, klu, sweet acacia; French:  cassie; Other:  aroma, popinac, kandaroma (Guam, CNMI); kolu (Hawai'i); vaivai vaka-vatona, vaivai vakavotona, ban baburi, oki (Fiji); te kaibakoa (Kiribati); debena (Nauru) Fabaceae shrub
Acacia longifolia English:  Sydney golden wattle, golden wattle, long-leaved wattle, long-leaved acacia, sallow wattle, coast wattle, golden rods Fabaceae tree
Acacia mangium English: mangium; Other: tuhkehn pwelmwahu (Pohnpei) Fabaceae tree
Acacia mearnsii English: black wattle; French: acacia noir Fabaceae tree
Acacia melanoxylon English: Australian blackwood, blackwood acacia Fabaceae tree
Acacia nilotica English:  prickly acacia, black thorn, Egyptian thorn, Nile acacia, algaroba, babul, gum arabic tree; French: acacia à gomme; Spanish: algarrobo; Other:  tiare (New Caledonia) Fabaceae tree
Acacia spp. English:  acacia Fabaceae shrubs/trees
Agave sisalana English:  sisal, sisal hemp; Other:  ndali, natali (Fiji); Other:  ndali, natali (Fiji), malina (Hawai'i) Agavaceae herb
Ageratina riparia English: spreading mistflower, creeping croftonweed, river eupatorium; Other: hamakua pamakani (Hawai‘i) Asteraceae shrub
Ailanthus altissima English:  tree of heaven, varnishtree Simaroubaceae tree
Albizia chinensis English: Chinese albizia, silktree Fabaceae tree
Alstonia macrophylla English: devil-tree Apocynaceae tree
Alternanthera philoxeroides English: alligator weed Amaranthaceae herb
Andropogon gayanus English:  gamba grass, tambuki grass Poaceae grass
Andropogon glomeratus English:  bush beardgrass, bushy bluestem Poaceae grass
Andropogon virginicus English: broomsedge, yellow bluestem, whisky grass Poaceae grass
Annona glabra English: pond apple, alligator apple, bullock's heart, cherimoyer; French: annone des marais, corossolier des marais; Other: uto ni mbulumakau, uto ni bulumakau, kaitambo, kaitambu (Fiji) Annonaceae tree
Anredera cordifolia English: Madeira vine, mignonette vine, lamb's tails; Other:  ‘uala hupe (Hawai‘i); filikafa (Niue) Basellaceae vine
Araujia sericifera English:  moth plant, moth catcher, white bladder flower Asclepiadaceae shrub
Ardisia crenata English:  hen's eyes, Hilo holly, coral berry, Australian holly, scratchthroat; French:  arbre à noël Myrsinaceae shrub
Ardisia elliptica English: shoebutton ardisia; Other: ati popa'a, atiu (French Polynesia) Myrsinaceae shrub
Arthrostemma ciliatum English: everblooming eavender Melastomataceae herb
Austroeupatorium inulaefolium   Asteraceae herb
Axonopus compressus English: blanket grass, carpetgrass; Other:  kambutu ni vavalangi (Fiji), vaolima (Samoa) Poaceae grass
Azadirachta indica English:  neem, nim, margosa Meliaceae tree
Azolla pinnata English:  mosquito fern, ferny azolla, water velvet Azollaceae fern
Barleria lupulina English:  hophead, Philippine violet Acanthaceae shrub
Barleria prionitis English:  barleria, porcupine flower Acanthaceae shrub
Bauhinia purpurea English:  purple orchid tree; purple butterfly tree, pink butterfly tree (Fiji); French: fleurs pourpres Fabaceae tree
Bauhinia variegata English:  orchid tree; mountain ebony, butterfly tree (Fiji); French: bois de boeuf, sabot boeuf, arbre de Saint-Thomas Fabaceae tree
Blainvillea gayana   Asteraceae herb
Bocconia frutescens English:  bocconia, plume-poppy, tree celandine, parrotweed Papaveraceae shrub
Boerhavia coccinea English: boerhavia, hog weed, hog feed, red spiderling, wineflower, tar vine; Other: mata pavo, patagon Nyctaginaceae herb
Brillantaisia lamium   Acanthaceae shrub
Bryophyllum delagoense English: chandelier plant Crassulaceae herb
Buddleja asiatica English: dog tail; Other: huelo ‘ilio (Hawai'i) Scrophulariaceae shrub
Buddleja davidii English:  orange eye, butterfly bush, summer lilac Scrophulariaceae shrub
Buddleja madagascariensis English: butterfly bush, smoke bush Scrophulariaceae shrub
Caesalpinia decapetala English:  cats claw, Mysore thorn, Mauritius thorn, wait-a-bit; French: bois sappan; Other:  puakelekino (Hawai'i) Fabaceae shrub
Calamus spp. English:  rattan; Other:  rotan, bejuko-n-halumtano, rotan bejuro-n-halumtan (Guam); bangerenguis ra ngebard (Palau) Arecaceae shrub (palm)
Calliandra haematocephala English:  red powder puff; French: pompon Fabaceae shrub
Calliandra surinamensis English: Surinamese stickpea Fabaceae tree
Callisia fragrans English:  fragrant inch plant, basketplant, spironema Commelinaceae herb
Calopogonium mucunoides English: calopo; Other: akankan-guakag (Guam) Fabaceae vine
Calotropis gigantea English:  calotrope, crown flower, bowstring hemp, madar; French: mercure végétal, mudar; Other: pua-kalaunu (Hawai'i); tahinu (French Polynesia) Ascelepiadaceae shrub
Calotropis procera English:  calotropis, rubber bush, apple of Sodom, mudar, madar, king’s crown, roostertree; French: arbre à soie Asclepiadaceae shrub/tree
Cardiospermum grandiflorum English: balloon vine; heart seed Sapindaceae vine
Carpobrotus edulis English:  ice plant, pigface, hottentot fig Aizoaceae succulent
Castilla elastica English:  Panama rubber tree, Mexican rubber tree, uletree; Other:  pulu mamoe (American Samoa) Moraceae tree
Casuarina glauca English:  swamp oak, saltmarsh ironwood, longleaf ironwood, gray sheoak Casuarinaceae tree
Cecropia obtusifolia English: trumpet tree, guarumo Cecropiaceae tree
Cecropia peltata English: trumpet tree; French:  parasolier, faux-ricin, pisse-roux, bois cannon Cecropiaceae tree
Cenchrus brownii English:  burgrass, burr grass, sand-bur, slimbristle sandbur Poaceae grass
Cestrum parqui English:  green cestrum, willow-leaved jessamine, Chilean cestrum, green poison-berry Solanaceae shrub
Chromolaena odorata English:  Siam weed, triffid weed, bitter bush, Jack in the bush; French:  herbe du Laos; Other:  kesengesil, masigsig (Guam); otuot (Chuuk), ngesngesil (Palau); wisolmatenrehwei (Pohnpei); mahsrihsrihk (Kosrae); hagonoy, agonoi, huluhagonoi (Philippines) Asteraceae herb
Chrysobalanus icaco English:  coco plum, icaco; French: icacier, icaquier, icaque, prune colon; Other: apolo (Fiji) Chrysobalanaceae shrub
Chrysophyllum oliviforme English:  satin leaf, wild star-apple, damson plum; Spanish: caimitillo Sapotaceae tree
Cinchona pubescens English:  quinine tree, red cinchona; French: quinquina rouge; Spanish: cascarilla Rubiaceae tree
Cinnamomum burmanni English:  padang cassia; French: cannelier de Malaisie Lauraceae tree
Cinnamomum camphora English:  camphor tree, camphor laurel; French: camphre, camphrier Lauraceae tree
Cinnamomum verum English:  cinnamon tree; French: cannelier de Ceylan; Other:  ochod ra ngebard (Palau). tinamoni, tigamoni (American Samoa and Samoa) Lauraceae tree
Cirsium vulgare English: spear thistle, Scotch thistle, bull thistle, black thistle, plume thistle; Other:  pua kali (Hawai'i) Asteraceae herb
Cissus nodosa English:  grape ivy Vitaceae liana
Citharexylum caudatum English: juniper berry Verbenaceae tree
Citharexylum spinosum English: fiddlewood; Other: masese (Fiji) Verbenaceae tree
Clausena excavata English: clausena Rutaceae tree
Clerodendrum chinense English:  Honolulu rose, stickbush, glory bower; Other:  losa Honolulu, losa onolulu (American Samoa and Samoa); pikake hohono, pikake wauke (Hawai'i), pitate mama (Cook Islands) Verbenaceae shrub
Clerodendrum japonicum English: glorybower Verbenaceae shrub
Clerodendrum paniculatum English: pagoda plant, pagoda flower; Other: butcherechár, butecherechar (Palau); tukehn sousou (Pohnpei) Verbenaceae shrub
Clerodendrum quadriloculare English: bronze-leaved clerodendrum; Other: tirooj in belle (Marshall Islands); kleuang (Palau); tuhkehn palau (Pohnpei), bagauac (Philippines) Verbenaceae shrub
Clidemia hirta English:  Koster’s curse, soap bush; French: canot-macaque; Other:  kui, kúi (Palau); kauresinga, kaurasinga, roinisinga, ndraunisinga, mara na bulumakau, mbona na mbulamakau, vuti (Fiji); kaurasiga (from Ecoport, no source given) Melastomataceae shrub
Clusia rosea English:  signature tree, autograph tree, copey, Scotch attorney, pitchapple Guttiferae tree
Conocarpus erectus English:  sea mulberry, buttonwood, button mangrove Combretaceae shrub/tree
Cordia curassavica English: black sage Boraginaceae shrub
Cordia glabra English: broad-leaved cordia Boraginaceae tree
Cortaderia jubata English:  jubata grass, Andean pampas grass, purple pampas grass Poaceae grass
Cortaderia selloana English:  pampas grass, silver pampas grass, Uruguayan pampas grass Poaceae grass
Corynocarpus laevigatus English: New Zealand laurel, karakara nut Corynocarpaceae tree
Crotalaria micans English: crotalaria; Other: pine kotalelia, pile (Niue) Fabaceae shrub
Cryptostegia grandiflora English:  rubber vine, India rubber vine, Palay rubbervine; Other:  liane de gatope (New Caledonia) Asclepiadaceae vine
Cryptostegia madagascariensis English:  Madagascar rubbervine Asclepiadaceae vine
Cupaniopsis anacardioides English:  carrotwood, tuckeroo Sapindaceae tree
Cuscuta campestris English:  golden dodder, field dodder, five-angled dodder; Other:  navereverelangi, wa vereverelangi, wa lawala, wa mbosuthu, wa ndanga, wa tikaivu, ndithangi (Fiji) Convolvulaceae vine
Cyathea cooperi English: Australian tree fern Cyatheaceae fern
Dalbergia sissoo English:  Indian dalbergia, Indian rosewood, sissoo, shisham; French: ébénier juane Fabaceae tree
Delairea odorata English: German ivy, Italian ivy, cape ivy Asteraceae vine
Derris elliptica English: derris; Other: tuba, bagin (Guam); oop, op (Kosrae); dub (Palau); up (Chuuk, Pohnpei); peinuhp, uhp, upanai, upanyap, upkesetik (Pohnpei); yuub (Yap); nduva, duva ni vavalagi, nduva ni vavalangi (Fiji) Fabaceae vine
Desmanthus virgatus Other: anil, jureminha (Brazil) Fabaceae herb
Desmodium nicaraguense Spanish: engorda-caballo, vara de arco, pie de paloma, vara larga, vara blanca, Juana de Arco, gutao, Juana Larga Fabaceae shrub
Dichrostachys cinerea English: aroma, Kalahari Christmas tree, Chinese lantern tree, sickle bush, marabou-thorn, marabú, Sen Domeng, Saint Domingue, acacia Saint Domingue Fabaceae shrub
Digitaria insularis English: cottongrass, sourgrass, feather-top grass Poaceae grass
Dillenia suffruticosa English: shrubby dillenia, shrubby simpoh Dilleniaceae shrub/tree
Dissotis rotundifolia English: dissotis, Spanish shawl, pink lady Melastomataceae herb
Echinochloa polystachya English: aleman grass, carib grass, creeping rivergrass Poaceae grass
Egeria densa English:  egeria, leafy elodea, dense waterweed Hydrocharitaceae aquatic herb
Eichhornia crassipes English: water hyacinth; French: jacinthe d'eau; Other: bung el ralm (Palau); mbekambekairanga, ndambendambe ni nga, jal khumbe, bekabekairaga, dabedabe ne ga, jal khumbe (Fiji); riri vai (Cook Islands) Pontederiaceae aquatic herb
Elaeis guineensis English: African oil palm; French: palmier à huile d'Afrique; Other: apwiraiasi (Pohnpei) Arecaceae tree
Epipremnum pinnatum cv. 'Aureum' English: pothos, money plant; Other: yalu, wa yalu, wa lu, alu, halu, waloa, matha, nanggalanggala, nanggalinggali, tonga, tanga (Fiji); alu (Tonga) Araceae vine
Erigeron karvinskianus English: Mexican daisy, seaside daisy, daisy fleabane Asteraceae herb
Ficus altissima English:  lofty fig, false banyan, council tree Moraceae tree
Ficus benghalensis English:  banyan, Indian banyan, vada tree; French: figuier des pagodes Moraceae tree
Ficus elastica English: India rubber tree, rubber plant; Other: komunoki, komunokí (Palau); rapah (Pohnpei); gak'iynigoma (Yap) Moraceae tree
Ficus macrophylla English:  Moreton Bay fig Moraceae tree
Ficus nota English:  tibig Moraceae tree
Ficus rubiginosa English:  rusty-leaved fig, Port Jackson fig, littleleaf fig Moraceae tree
Flindersia brayleyana English: Queensland maple, silkwood Rutaceae tree
Funtumia elastica English:  African rubber tree, silkrubber; French: arbre à caoutchouc; Other:  pulu vao (Samoa) Apocynaceae tree
Furcraea hexapetala English:  Cuban hemp, hemp; Other:  cubuya (Galapagos Islands) Agavaceae succulent
Gomphocarpus physocarpus English:  balloon plant, bladderbush Asclepiadaceae shrub
Grevillea banksii English: kahili flower, Banks grevillea; Other: ha‘iku, kahili (Hawai‘i); ‘oka pua ‘ula‘ula (Hawai‘i (Ni‘ihau)) Proteaceae tree
Grewia asiatica English: phalsa Tiliaceae tree
Gymnocoronis spilanthoides English: Senegal tea, temple plant Asteraceae herb
Haematoxylum campechianum English:  logwood, bloodwood tree, campeachy wood, campeche  Fabaceae tree
Harungana madagascariensis English: harungana Clusiaceae tree
Hedychium gardnerianum English:  kahili gingerOther:  cevuga dromodromo (Fiji); kahili, ‘awapuhi kahili (Hawai‘i); sinter weitahta (Pohnpei) Zingiberaceae herb
Heliocarpus popayanensis English:  moho, white moho Tiliaceae tree
Heterocentron subtriplinervium English: pearl flower Melastomataceae herb
Hiptage benghalensis English: hiptage; French: liane de cerf Malpighiaceae shrub
Hydrilla verticillata English: hydrilla, Florida elodea, water thyme Hydrocharitaceae herb
Hylocereus undatus English: night-blooming cereus, strawberry pear, red pitaya, dragon fruit, pitahaya; French: pitaya, pitahaya rouge; Spanish: flor de Caliz; Other: paniniokapunahou, papipi pua (Hawai'i) Cactaceae succulent
Hymenachne amplexicaulis English:  hymenachne, trompetilla, West Indian marsh grass Poaceae grass
Hyparrhenia rufa English: jaragua grass, thatching grass Poaceae grass
Hypochoeris radicata English: hairy cat’s ear, gosmore Asteraceae herb
Hyptis capitata English: knobweed; Other: botones, batunes (Guam); t'aiegarabao, pathpath (Yap), maa uupo (French Polynesia) Lamiaceae herb
Hyptis suaveolens English:  wild spikenard, chan; French: gros baume, hyptis à odeur; Other:  mumutun (Guam) Lamiaceae herb
Imperata cylindrica English: blady grass, cogon grass, satintail; French:  paille de dys, paillotte, impérata cylindrique, impérate; Other:  gi, ngi (Fiji); alang-alang, lalang (Indonesia, Malaysia); kasoring (Palau) Poaceae grass
Ischaemum polystachyum English: paddle grass; Other: mah (Kosrae); reh padil (Pohnpei) Poaceae grass
Ischaemum rugosum English: muraina grass, wrinkle duck-beak, saramatta grass; Other: tho muraina, co muraina (Fiji) Poaceae grass
Ischaemum timorense English:  centipede grass, stalkleaf murainagrass, lucuntu grass; Other:  waidoi grass (Fiji) Poaceae grass
Jacaranda mimosifolia English:  jacaranda Bignoniaceae tree
Jasminum fluminense English:  Brazilian jasmine Oleaceae vine
Jatropha gossypiifolia English: bellyache bush, cotton-leaved physic nut Euphorbiaceae shrub
Juncus spp. English: rush Juncaceae rush
Justicia carnea English: pink plume-flower, pink jacobinia Acanthaceae shrub
Kunzea ericoides English:  tree manuka, tree manuba, kanuka (New Zealand), burgan, white teatree Myrtaceae tree
Khaya senegalensis English: African mahogany, Senegal mahogany Meliaceae tree
Kyllinga polyphylla English: Navua sedge; Other: tuise tele, tuise fiti (Samoa) Cyperaceae sedge
Leonotis nepetifolia English:  lion’s tail, lion’s ear, Christmas candlestick; French: gros bouton, gros tête Lamiaceae herb
Leptospermum scoparium English: New Zealand tea; manuka (New Zealand) Myrtaceae tree
Licuala grandis English: ruffled fan palm; French: palmier-cuillère Arecaceae tree (palm)
Lophostemon confertus English: brush box, Brisbane box, vinegar tree Myrtaceae tree
Ludwigia peruviana English: ludwigia, Peruvian primrose, water primrose Onagraceae shrub
Macfadyena unguis-cati English: cat's-claw climber Bignoniaceae vine
Maesopsis eminii English: umbrella tree, musizi Rhamnaceae tree
Medinilla magnifica English: chandelier tree, showy melastome, showy medinilla, Malaysian orchid Melastomataceae shrub
Medinilla venosa English: holdtight Melastomataceae shrub
Melaleuca quinquenervia English: melaleuca, cajeput, paper bark tree, punk tree; Other: niaouli (New Caledonia) Myrtaceae tree
Melastoma candidum English:  Asian melastome, Indian rhododendron, Malabar melastome Melastomataceae tree
Melastoma sanguineum English:  fox-tongued melastoma, red melastome Melastomataceae shrub/tree
Melicoccus bijugatus English: Spanish lime Sapindaceae tree
Melochia umbellata English: melochia Sterculiaceae tree
Memecylon floribundum     Melastomataceae shrub
Merremia tuberosa English:  wood rose, Spanish arborvine, yellow morning-glory; French: liane-à-tonelle, liane-jaune; Other:  pilikai (Hawai'i) Convolvulaceae vine
Miconia calvescens English: miconia, velvetleaf, purple plague, bush currant Melastomataceae tree
Microlaena stipoides English:  meadow ricegrass, weeping grass Poaceae grass
Mikania scandens English:  climbing hempweed, climbing hempvine Asteraceae vine
Mimosa diplotricha English: giant sensitive plant, nila grass; French: grande sensitive, sensitive gèante; Other: singbiguin sasa (Saipan); mechiuaiuu (Palau); limemeihr laud (Pohnpei); vao fefe palagi (American Samoa and Samoa), la'au fefe tele, la'au fefe palagi (Samoa); wa ngandrongandro levu, wa ngandrongandro ni wa ngalelevu, co gadrogadro (Fiji) Fabaceae shrub
Mimosa pigra English:  catclaw mimosa, thorny sensitiveplant, giant mimosa, giant sensitive plant, black mimosa, zaraz, dormilona, bashful plant, amourette violet; French: amourette riviére Fabaceae shrub
Montanoa hibiscifolia English: montanoa, tree daisy, Anzac flower Asteraceae shrub
Morella faya English:  fayatree, firetree, firebush Myricaceae tree
Mucuna pruriens English: cow itch, velvet bean, Bengal bean, Mauritius bean; French: pois pouilleux, poil à gratter; Other: akangkang dangkulo (Guam) Fabaceae vine
Muntingia calabura English:  jam tree, strawberry tree, Jamaican cherry, Singapore cherry, Panama cherry, Panama berry, ornamental cherry, calabura, sirsen; French: bois ramier; Other:  budo (Yap, Palau); manzanilla, mansanita, manzanita (Guam, CNMI), capulin (Fiji, French Polynesia) Tiliaceae tree
Myriophyllum aquaticum English: parrot's feather, water feather, Brazilian water milfoil Haloragidaceae aquatic herb
Ochna kirkii English: Micky Mouse plant, bird’s-eye bush Ochnaceae shrub/tree
Ochna serrulata English:  ochna, Mickey-Mouse plant, bird’s-eye bush Ochnaceae shrub
Ochroma pyramidale English:  balsa, corkwood, down tree Bombacaceae tree
Ossaea marginata   Melastomataceae shrub
Oxyspora paniculata English:  oxyspora, bristletips Melastomataceae shrub
Paederia foetida English:  stink vine, skunk vine; Other: maile pilau, maile ka kahiki (Hawai'i). Rubiaceae vine
Panicum repens English: torpedo grass, couch panicum, creeping panic; French:  panic rampant, millet rampant; Other: wainaku grass (Hawai'i) Poaceae grass
Paraserianthes lophantha English: brush wattle, plume albizia, plume acacia, stink bean Fabaceae shrub/tree
Parkinsonia aculeata English: parkinsonia, Jerusalem thorn, horse-bean, retama; French: arrêtenègre; Spanish: palo verde Fabaceae tree
Parthenium hysterophorus English: bitterweed, carrot grass, false ragweed, feverfew, parthenium weed, ragweed parthenium, whitetop, Santa Maria Asteraceae herb
Paspalum urvillei English: Vasey grass; French: herbe de Vasey, paspalum d'Urville Poaceae grass
Passiflora alata English:  wild passion fruit, wingstem passionflower Passifloraceae shrub
Passiflora caerulea English:  blue passion flower Passifloraceae shrub
Passiflora coccinea English:  scarlet passion flower, red passion flower, red granadilla Passifloraceae shrub
Passiflora ligularis English: sweet granadilla, yellow passionfruit; French: granadille, grenadille douce, barbadine; French: granadille, grenadille douce, barbadine; Other: lemi wai, lani wai, lemona (Hawai‘i) Passifloraceae vine
Passiflora pulchella English:  two-lobed passion flower, wingleaf passionfruit Passifloraceae shrub
Passiflora rubra English: red passionfruit, Dutchman's laudanum Passifloraceae vine
Passiflora tarminiana English: banana poka, banana passionfruit, bananadilla Passifloraceae vine
Paulownia tomentosa English:  paulownia, princess-tree, Chinese empress tree, karri-tree Scrophulariaceae tree
Pennisetum clandestinum English: kikuyu grass, kikuyo Poaceae grass
Pennisetum polystachion English:  mission grass, feathery pennisetum; French:  queue de chat; Other: mechen katu (Chuuk), pwokso, dipw rais (Pohnpei), o tamata (Fiji) Poaceae grass
Pennisetum purpureum English: elephant grass, napier grass, merker grass; French: herbe éléphant, fausse canne à sucre; Spanish: pasto elefante; Other: bokso (Palau); puk-soh (Pohnpei); acfucsracsracsr (Kosrae). Poaceae grass
Pennisetum setaceum English: fountain grass Poaceae grass
Philadelphus karwinskyanus English: philadelphus, evergreen mock orange, syringa Saxifragaceae shrub
Phormium tenax English: New Zealand flax, New Zealand hemp, bush flax Agavaceae herb
Phyllostachys nigra English:  black bamboo; French: bambou noir Poaceae shrub
Piper aduncum English: spiked pepper; Other: yaqona ni Onolulu, yanggona ni Onolulu (Fiji) Piperaceae tree
Pistia stratiotes English: water lettuce, tropical duckweed; French: laitue d'eau, pistie; Other: lechuguita de agua, repollo de agua , apon-apon, apoe-apoe, beo-cai, chawk Araceae aquatic herb
Pithecellobium dulce English:  Madras thorn, Manila tamarind; French: pois sucré; Other:  kamachuri (Chuuk); camachili, kamachile, kamachiles, kamachili (Guam); kamachili, kamatire (CNMI Chamorro), ghamasiligh (CNMI-Carolinian); kamatsiri, kamatsíri, opiuma (Palau): 'opiuma (Hawai'i); kataiya (Fiji) Fabaceae tree
Pittosporum pentandrum English:  pittosporum, Taiwanese cheesewood, mamalis Pittosporaceae shrub/tree
Pittosporum tobira English:  tobira, Japanese pittosporum, Japanese cheesewood, mock orange, Australian laurel Pittosporaceae shrub/tree
Pittosporum undulatum English:  Victorian box, Victorian laurel, Australian cheesewood, mock orange, sweet pittosporum, orange pittosporum Pittosporaceae tree
Pittosporum viridiflorum English:  cape pittosporum Pittosporaceae tree
Platycerium bifurcatum English:  elkhorn fern, staghorn fern Selaginellaceae fern
Pluchea indica English:  Indian fleabane, Indian pluchea, Indian camphorweed Asteraceae shrub
Praxelis clematidea English: praxelis Asteraceae herb
Prosopis spp. English: mesquite, algaroba; Spanish:  algarrobo Fabaceae tree
Psidium cattleianum English: strawberry guava, cherry guava, Cattley guava, Chinese guava; French: goyavier de Chine; Other:  kuahpa (Pohnpei); waiawi ‘ula‘ula (Hawai'i); ngguava (Fiji), tuava tinito (French Polynesia); kua‘va (Samoa) Myrtaceae tree
Psidium guineense English:  Brazilian guava, Guinea guava; French: goyavier du Brésil Myrtaceae shrub/tree
Pueraria phaseoloides English: tropical kudzu, puero Fabaceae vine
Quisqualis indica English:  Rangoon creeper Combretaceae vine
Ravenala madagascariensis English:  traveler’s palm, traveler’s tree, ravenale; French: arbre à voyageur Strelitziaceae tree
Rhodomyrtus tomentosa English: rose myrtle, downy myrtle, Isenberg bush Myrtaceae shrub
Rhynchospora caduca   Cyperaceae herb
Rubus alceifolius English: giant bramble Rosaceae shrub
Rubus moluccanus English:  Molucca raspberry, broad leafed bramble, Molucca bramble, eelkek; French:  piquant lou-lou (Mauritius); Other:  kohkihl (Kosrae); soni, wa sori, wa ngandrongandro, wa votovotoa, (Fiji) Rosaceae shrub
Rubus rosifolius English: roseleaf raspberry, thimbleberry, Mauritius raspberry; French: framboisier; Other: ola'a, ‘akala, akalakala (Hawai'i) Rosaceae shrub
Rubus spp. English: raspberries, blackberries, brambles Rosaceae shrub
Ruellia brevifolia   Acanthaceae herb
Ruellia prostrata English:  black weed, bell weed; Other:  vao uli, vao uliuli (Samoa) Acanthaceae herb
Saccharum spontaneum English: wild cane, false sugarcane; French: canne à sucre fourragère, canne sauvage; Other: banga ruchel (Palau); ac (Kosrae); tebu salah; ahlek, ahlec, (Pohnpei); to aheo (French Polynesia) Poaceae grass
Sacciolepis indica English: glenwood grass Poaceae grass
Salvinia molesta English:  salvinia, water fern, kariba weed, African payal Salviniaceae fern
Sanchezia speciosa English: sanchezia. Acanthaceae shrub
Sansevieria trifasciata English: bowstring hemp, mother-in-law’s tongue; French: chanvre d'Afrique; Other: tigre (Guam), kitelel (Palau) Agavaceae herb
Schinus molle English:  pepper tree, California pepper tree, Peruvian peppertree, pepperina; French: faux poivrier, molée des jardins, poivrier d'Amérique Anacardiaceae tree
Schinus terebinthifolius English: Christmas-berry, Brazilian pepper, Brazilian holly, Florida holly; French: faux poivrier, poivre rose; Other:  warui (Fiji); wilelaiki (Hawai‘i), naniohilo (Hawai‘i (Moloka‘i)) Anacardiaceae tree
Schizachyrium condensatum English: little bluestem, bush beardgrass Poaceae grass
Senecio madagascariensis English: fireweed Asteraceae herb
Senna obtusifolia English: habucha, coffeeweed, sicklepod Fabaceae herb
Senna septemtrionalis English:  buttercup bush, yellow shower, laburnum; Other:  mosimosi, naseni karakarawa, winivinikau (Fiji); kolomona, kalamona (Hawai'i) Fabaceae shrub/tree
Senna siamea English:  cassod tree, kassod tree, Siamese cassia; French: bois perdrix; Other:  kasia (Tonga) Fabaceae tree
Sesbania punicea English:  red sesbania, coffee weed, rattle-pod, sesban, red seine bean, Brazil rattlebox, coffee of the coast, tame acacia, false poinciana, black acacia, purple sesbane Fabaceae shrub
Setaria palmifolia English: palmgrass, short pitpit, hailans pitpit, broadleaved bristlegrass; Other:  vao ‘ofe‘ofe (Samoa) Poaceae grass
Solandra maxima English:  golden cup, cup of gold, chalice vine; Spanish: copa de oro Solanaceae liana
Solanum seaforthianum English: potato creeper, Brazilian nightshade Solanaceae vine
Solanum tampicense English: wetland nightshade, aquatic soda apple Solanaceae aquatic herb
Solanum viarum English: tropical soda apple Solanaceae herb?
Sporobolus elongatus English:  wiregrass, rat-tail dropseed Poaceae grass
Stapelia gigantea English: carrion flower, starfish flower, zulu-giant, giant toad plant Asclepiadaceae succulent
Stylosanthes guianensis English:  stylo, Brazilian lucerne, tropical lucerne, Nigerian stylo Fabaceae herb
Syncarpia glomulifera English: turpentine tree, lustre wood Myrtaceae tree
Tabebuia heterophylla English: pink tecoma, pink trumpet tree, white cedar; Other: calice du pape Bignoniaceae tree
Terminalia myriocarpa English: hollock, jhalna Combretaceae tree
Tetrazygia bicolor English:  Florida clover ash Melastomataceae shrub/tree
Thunbergia grandiflora English: Bengal trumpet, blue trumpet vine, clock vine, skyvine, large-flowerd thunbergia; Other: bung el etiu (Palau) Acanthaceae vine
Thunbergia laurifolia English: purple allamanda, laurel-leaved thunbergia, laurel clock vine Acanthaceae vine
Tibouchina herbacea English: glorybush, cane ti, tibouchina Melastomataceae herb
Tibouchina urvilleana English: glorybush, lasiandra, princess flower Melastomataceae herb
Timonius timon English: liberal (Palau); Other: sakosia (from Ecoport, no source given) Rubiaceae tree
Triadica sebifera English:  Chinese tallow tree, popcorn tree, vegetable tallow, white wax berry, chicken tree, Florida aspen; French: arbre à suif, boiré Euphorbiaceae tree
Tribulus cistoides