Pacific Island Ecosystems at Risk (PIER)


Report on invasive plant species in Samoa


Appendix 1.  Invasive species of environmental concern

Table 1.   Species that are invasive elsewhere in similar ecosystems but are not known to be present in Samoa
Table 2.  
Introduced species that are invasive or potentially invasive in Samoa
Table 3. 
Species that are reported as invasive or weedy elsewhere and are common, weedy or cultivated in Samoa
Table 4. 
Native species (or Polynesian introductions) that can exhibit aggressive behavior


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

Scientific Name

Common Names

Family

Habit

Acacia aulacocarpa English: brown salwood, brush ironbark wattle, hickory wattle; Other: ākasia (Cook Islands) Fabaceae tree

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 crassicarpa English: northern wattle, Papua New Guinea red wattle; Other: ākasia (Cook Islands) Fabaceae tree

Acacia farnesiana

English: Ellington curse, klu, sweet acacia; French: acacia jaune, cassie; Other: titima (Cook Islands); vaivai vaka-vatona, vaivai vakavotona, ban baburi, oki (Fiji); aroma, popinac, kandaroma (Guam, CNMI); kolu (Hawai'i); te kaibakoa (Kiribati); debena (Nauru) Fabaceae shrub
Acacia glauca English: redwood; French: amourette Fabaceae tree
Acacia longifolia English: Sydney golden wattle, golden wattle, long-leaved wattle, long-leaved acacia, sallow wattle, coast wattle, golden rods Fabaceae tree

Acacia mearnsii

English: black wattle; French: acacia noir; Other: ākasia (Cook Islands) 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), 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 lebbeck English: siris-tree, rain tree, East Indian walnut, kokko, woman's-tongue tree, soros-tree, raom tree; French: bois noir; Other: ‘arapitia (Cook Islands (Miti‘aro)); trongkon-mames, tronkon mames, mamis (Guam); kalaskas, trongkon-kalaskas (CNMI–Chamorro); schepil kalaskas (CNMI–Carolinian); ukall ra ngebard (Palau); gumorningabchey; ngumorrningobchey (Yap); 'ohai (Hawai‘i); vaivai, vaivai ni vavalangi, vaivai ni vavalagi (Fiji); tamaligi pa’epa’e (Samoa); kasia (Tonga) 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
Annona squamosa English: sugar apple, sweetsop, custard apple, sugar apple; French: annone écailleuse, pomme-canelle; Other: tapotapo (Cook Islands, French Polynesia); tapotapo Māori (Cook Islands); kātara‘apa Māori (Cook Islands (Mangaia)); naponapo Māori (Cook Islands (Aitutaki)); atis, ates (Guam); ngel ra ngebard (Palau), ‘apele papalangi, ‘apele Tonga (Tonga), nameana (Tuvalu) Annonaceae tree
Anredera cordifolia English: Madeira vine, mignonette vine, lamb's tails; Other: tāpau (Cook Islands (‘Atiu)); ‘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

Argyreia nervosa

English: elephant creeper, Hawaiian baby woodrose , silver morning glory, woolly morning glory; French: coup d'air, liane a minguet, liane d' argent Convolvulaceae vine

Aristolochia littoralis

English: Dutchman's pipe, calico flower; Other: mokorā (Cook Islands); fue paipa holani (Tonga) Aristolochiaceae vine
Arthrostemma ciliatum English: arthrostemma, everblooming eavender Melastomataceae herb
Austroeupatorium inulaefolium Asteraceae herb
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
Blainvillea gayana Asteraceae herb
Bocconia frutescens English: bocconia, plume-poppy, tree 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 pinnatum English: life plant, air plant, resurrection plant, Canterbury bells, cathedral bells, Mexican love plant; Spanish: hoja del aire; Other: ngāngā‘ere toka (Cook Islands); bulatawamudu (Fiji); ‘oliwa ku kahakai (Hawai'i); teang (Kiribati); kibilia (Marshall Islands); tupu he lau, tupu noa (Niue); pagi (Samoa); pipi vao (Tonga) 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: cat's 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
Callisia fragrans English: fragrant inch plant, basketplant, spironema Commelinaceae herb
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; Other: kopūpū takaviri? (Cook Islands) Sapindaceae vine

Cardiospermum halicacabum

English: balloon vine, heart pea, love-in-a-puff; Other: wa niu, vo niu (Fiji); vinivinio (French Polynesia), poniu, haleakai‘a, ‘inalua, pohuehue uka (Hawai'i) Sapindaceae vine
Carpobrotus edulis English: ice plant, pigface, hottentot fig Aizoaceae succulent

Casuarina glauca

English: swamp oak, saltmarsh ironwood, longleaf ironwood, gray sheoak Casuarinaceae tree

Cecropia obtusifolia

English:  trumpet tree, guarumo; Other: rau-māniota (Cook Islands) 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

Cenchrus ciliaris

English: buffelgrass, African foxtail grass, anjan grass; French: cenchrus cilié Poaceae grass
Cestrum diurnum English: inkberry, day jessamine, day cestrum, China berry; Other: ariki-va‘ine (Cook Islands); thauthau (Fiji); tinta ‘n-China, tentanchinu, tintan China (Guam, CNMI); makahala (Hawai'i); sugi vao, suni vao (Samoa); vaitohi (Tonga) Solanaceae shrub
Cestrum parqui English: green cestrum, willow-leaved jessamine, Chilean cestrum, green poison-berry Solanaceae shrub

Chloris radiata

English: plush-grass, radiate fingergrass Poaceae grass

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: prunier coton, 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
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 japonicum English: glorybower Verbenaceae 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

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

Cyathea cooperi

English: Australian tree fern; French: fougère arborescente d’Australia Cyatheaceae fern

Cynodon dactylon

English: Bermuda grass, giant Bermuda grass, bahama grass, devil's grass, couch grass, Indian doab, grama, devilgrass, couchgrass, balama grass; French: chiendent, petit chiendent, chiendent pied-de-poule; Other: matie (Cook Islands); manini, manienie (Hawai‘i); motie molulu (Niue); kambuta, kabuta (Fiji); mosie molulu (Niue); herbe de couverture (New Caledonia); pasto bermuda, zacate bermuda, grama dulce, gramón, hierba fina, grama-seda, (from Ecoport, no source given) Poaceae grass

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

English: slender mimosa, virgate mimosa; French: sensitive de montravel (New Caledonia); 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

Echinochloa polystachya

English: aleman grass, carib grass, creeping rivergrass Poaceae grass

Egeria densa

English: egeria, leafy elodea, dense waterweed Hydrocharitaceae aquatic herb
Erigeron karvinskianus English: Mexican daisy, seaside daisy, daisy fleabane Asteraceae herb
Eugenia uniflora English: Surinam cherry, red Brazil cherry; French: cerisier carré, cerisier de Cayenne; Other: venevene (Cook Islands); menemene (Cook Islands (Mangaia)); kafika, kafika palangi (Niue), pitanga (Brazil) Myrtaceae shrub/tree
Ficus altissima English: lofty fig, false banyan, council tree Moraceae tree

Ficus macrophylla

English: Moreton Bay fig Moraceae tree

Ficus microcarpa

English: Chinese banyan, Malayan banyan, Indian laurel; Other: lulk (Palau); nunu (Chamorro, CNMI) Moraceae tree

Ficus nota

English: tibig Moraceae tree

Ficus rubiginosa

English: rusty-leaved fig, Port Jackson fig, littleleaf fig Moraceae tree
Flacourtia jangomas English: Indian-plum, runeala-plum; French: prunier d'Inde; Spanish: ciruela forastera; Other: venevene pāma (Cook Islands); palamu (Niue) Flacourtiaceae tree
Flindersia brayleyana English: Queensland maple, silkwood Rutaceae tree
Furcraea hexapetala English: Cuban hemp, hemp; Other: cubuya (Galapagos Islands) Agavaceae succulent
Gmelina arborea English: gmelina, white teak, white beech; Spanish: melina; Other: yemane (Fiji, Philippines) Verbenaceae tree

Gomphocarpus physocarpus

English: balloon plant, balloon cottonbush, bladderbush, wild cotton 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 ginger; Other: kōpī (Cook Islands); 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

Hippobroma longiflora

English: star of Bethlehem, fetia, madamfate; Other: pua hōkū (Hawai'i) Campanulaceae 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 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
Lablab purpureus English: hyacinth bean, lablab, bonavist, Egyptian kidney bean, dolichos; French: dolique, dolique d'Egypte, pois nourrice; Other: ndralawa, natomba, tomba (Fiji); cheribilla apaka, chuchumeko (Guam--Chamorro); papapa, pi (Hawai'i); pini lae puaka (Tonga) Fabaceae vine

Lemna spp.

English: duckweed; Other: fala‘o‘oto (Samoa) Lemnaceae herb

Leonotis nepetifolia

English: lion’s tail, lion’s ear, Christmas candlestick; French: gros bouton, gros tête Lamiaceae herb
Leonurus japonicus English: lion’s tail, Chinese motherwort; Other: vavai tara (Cook Islands (Miti‘aro) 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

Melia azedarach

English: Chinaberry, pride-of-India, indian lilac, Persian lilac, white cedar, margosa tree, tira; French: lilas des Indes, arbre à chapelets; Spanish: jazmin (Galapagos Is.); Other: tīra (Cook Islands); dake, bakain (Fiji), paraiso, para'isu (Guam); ‘inia, ‘ilinia (Hawai‘i); sili, tili (Niue); lelah (Pohnpei); sita (Tonga); prais (Yap) Meliaceae tree

Melicoccus bijugatus

English: Spanish lime Sapindaceae tree

Melinis minutiflora

English: melinis, molasses grass; French: mélinis, herbe molasses, herbe à miel; Other: puakatau (Tonga) Poaceae grass
Melinis repens English: Natal redtop, Natal grass, red Natal grass, Holme's grass, blanketgrass; French: herbe du Natal, herbe rose, herbe pappangue; tricholène (New Caledonia); Other: salapona (Tonga) Poaceae grass

Melochia umbellata

English: melochia Sterculiaceae tree

Memecylon floribundum

Melastomataceae shrub

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 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: venevene (Cook Islands (Penrhyn)); capulin (Fiji, French Polynesia); manzanilla, mansanita, manzanita (Guam, CNMI), budo (Palau, Yap) Tiliaceae tree

Myriophyllum aquaticum

English: parrot's feather, water feather, Brazilian water milfoil Haloragidaceae aquatic herb
Neonotonia wightii English: glycine; French: soja pérenne Fabaceae vine

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

Olea europaea

English: olive; Other: ‘oliwa, ‘oliwa haole (Hawai'i) Oleaceae tree

Operculina ventricosa

English: paper rose, St. Thomas lidpod; Other: alalag (Guam); palulu (Samoa); fue hina (Tonga) Convolvulaceae vine

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

Paspalum fimbriatum

English: fimbriate paspalum, winged paspalum, Panama paspalum, Panama crowngrass, Columbia grass Poaceae grass

Paspalum scrobiculatum

English: rice grass; creeping paspalum, ditch millet, Indian paspalum, kodo millet, water couch; Spanish: mijo koda; Other: mātā (Cook Islands); co duru levu, tho nduru levu, tho ndina, tho ni ndina (Fiji); karasi (Solomon Islands) Poaceae grass
Paspalum urvillei English: Vasey grass; French: herbe de Vasey, paspalum d'Urville; Other: tinikarāti (Cook Islands (Mangaia)) 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 edulis English: passion fruit, yellow passion fruit, purple passion fruit, qarandila, purple granadilla; French: grenadille; Spanish: maracuya (Galapagos Is.); Other: pārapōutini papa‘ā (Cook Islands); ka‘atene papa‘ā, katinga papa‘ā (Cook Islands (Mangaia)); liliko‘i (Hawai‘i), pompom (Pohnpei); pasio (Samoa); vaine (Tonga) Passifloraceae vine

Passiflora maliformis

English: hard-shelled passionfruit, sweet calabash, sweet cup; French: pomme calabas; Other: pārapōutini ‘enua, pārapōutini Maori (Cook Islands); ka‘atene Maori, katinga Maori (Cook Islands (Mangaia)); pasio (Samoa), vaine kai (Tonga) Passifloraceae vine

Passiflora pulchella

English: two-lobed passion flower, wingleaf passionfruit Passifloraceae shrub
Passiflora rubra English: red passionfruit, Dutchman's laudanum; Other: pōkutekute (Cook Islands (‘Atiu)) 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 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 bissetii Poaceae shrub

Phyllostachys nigra

English: black bamboo; French: bambou noir Poaceae shrub

Pimenta dioica

English: pimento, allspice; Other: sipaisi (Tonga) Myrtaceae tree
Pimenta racemosa English: bay tree, bay rum tree, bay oil tree, malagueta; Other: sinamoni (Tonga) Myrtaceae tree
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; Spanish: lechuguita de agua, repollo de agua Araceae aquatic herb

Pithecellobium dulce

English: Madras thorn, Manila tamarind, sweet inga; 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 carolinensis

English: sour bush Asteraceae shrub

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 guineense English: Brazilian guava, Guinea guava; French: goyavier du Brésil Myrtaceae shrub/tree
Pueraria phaseoloides English: tropical kudzu, puero; Other: kūkū (Cook Islands (‘Aitu)) Fabaceae vine

Pyrostegia venusta

English: flame vine, flame flower, golden shower, orange trumpet vine Bignoniaceae vine