Pacific Island Ecosystems at Risk (PIER)
Report on invasive plant species in Palau (2008 survey)
Appendix 6, Table 9. Species of environmental concern present elsewhere in Palau but not in Hatohobei State
|
Scientific Name |
Common Names (abridged) |
Family |
Present on: |
| Abrus precatorius | English: bead vine, coral bead plant, precatory, precatory bean, red beadvine, rosary pea | Fabaceae | Koror, Malakal, Angaur |
| Acacia confusa | English: Formosa koa, Formosa acacia; Palauan: ianángi, yanangi | Fabaceae | Koror, Malakal, Ngerkebesang, Babeldaob |
| Acacia farnesiana | English: Ellington curse, klu, sweet acacia | Fabaceae | Babeldaob |
| Acacia mangium | English: mangium, brown salwood, black wattle, hickory wattle | Fabaceae | Babeldaob |
| Adenanthera pavonina | English: coral bean tree, red sandalwood tree, red bead tree; Palauan: telengtúngd, telentundalel | Fabaceae | Koror, Malakal, Ngerkebesang, Babeldaob |
| Aeschynomene americana | English: American joint vetch, joint vetch, shyleaf | Fabaceae | Koror, Ngerkebesand, Babeldaob |
| Agave sisalana | English: sisal, sisal hemp | Agavaceae | Babeldaob |
| Agave sp. | English: American aloe, century plant | Agavaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Peleliu, Ngercheu |
| Albizia lebbeck | English: siris-tree, rain tree, East Indian walnut; Palauan: ukall ra ngebard | Fabaceae | Koror |
| Allamanda cathartica | English: yellow trumpet vine, golden trumpet, golden allamanda, golden cup | Apocynaceae | Koror, Malakal, Ngerkebesang, Babeldaob |
| Alocasia cucullata | English: Chinese ape, Chinese taro | Araceae | Koror |
| Alpinia purpurata | English: red ginger | Zingiberaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur |
| Alternanthera brasiliana | English: Brazilian joyweed, Joseph’s coat | Amaranthaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Ngercheu |
| Amaranthus dubius | English: amaranth, spleen amaranth | Amaranthaceae | Koror, Malakal, Babeldaob |
| Amaranthus spinosus | English: edlebur, needle burr, spiny amaranth, thorny pigweed | Amaranthaceae | Angaur |
| Angelonia angustifolia | English: angelonia, narrowleaf angelon | Scrophulariaceae | Koror, Babeldaob |
| Antigonon leptopus | English: Mexican creeper, hearts on a chain, coral vine; Palauan: dilngau | Polygonaceae | Koror, Babeldaob |
| Arundo donax | English: giant reed, Spanish reed, wild cane | Poaceae | Koror, Babeldaob |
| Asparagus densiflorus | English: asparagus fern, smilax, regal fern | Liliaceae | Koror, Ngerkebesang |
| Asystasia gangetica subsp. gangetica | English: Chinese violet, Philippine violet, coromandel | Acanthaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Kayangel |
| Axonopus compressus | English: blanket grass, carpetgrass | Poaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Kayangel, Peleliu, Ngercheu |
| Bacopa procumbens | Scrophulariaceae | Koror, Babeldaob, Peleliu | |
| Barleria cristata | English: crested Philippine violet, Philippine violet | Acanthaceae | Koror |
| Barleria lupulina | English: hophead, Philippine violet | Acanthaceae | Babeldaob, Peleliu |
| Bauhinia acuminata | English: dwarf white bauhinia | Fabaceae | Koror |
| Bauhinia monandra | English: orchid-tree, St. Thomas-tree, Napoleon's plume | Fabaceae | Koror, Babeldaob |
| Bauhinia purpurea | English: purple orchid tree; purple butterfly tree | Fabaceae | Koror, Babeldaob |
| Bauhinia variegata | English: orchid tree; mountain ebony | Fabaceae | Babeldaob |
| Bothriochloa bladhii | English: plains bluegrass, Australian bluestem, Caucasian bluestem; Palaluan: desum | Poaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Peleliu, Bkul a Chesemiich, Ngchelobel |
| Bryophyllum delagoense | English: chandelier plant | Crassulaceae | Babeldaob |
| Bryophyllum pinnatum | English: life plant, air plant, resurrection plant, Canterbury bells, cathedral bells, Mexican love plant | Crassulaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Peleliu, Ngercheu, Sonsorol |
| Calamus spp. | English: rattan; Palauan: bangerenguis ra ngebard | Arecaceae | Babeldaob |
| Calopogonium mucunoides | English: calopo | Fabaceae | Koror, Malakal, Ngerkebesang, Babeldaob |
| Calotropis gigantea | English: calotrope, crown flower, madar | Ascelepiadaceae | Koror, Ngerkebesand, Babeldaob, Peleliu |
| Canna x generalis | English: canna lily, common garden canna | Cannaceae | Koror |
| Caryota mitis | English: Burmese fishtail palm, clustered fishtail palm, tufted fishtail palm | Arecaceae | Koror |
| Ceiba pentandra | English: kapok tree, silk-cotton tree; Palauan: kalngebárd, kalngebard, kerrekar ngebard | Bombacaceae | Koror, Malakal, Babeldaob, Kayangel |
| Cenchrus brownii | English: burgrass, burr grass, sand-bur, slimbristle sandbur | Poaceae | Malakal, Angaur, Peleliu |
| Centrosema pubescens | English: centro, butterfly-pea | Fabaceae | Koror, Malakal, Babeldaob |
| Chamaecrista mimosoides | English: Japanese tea; Palauan: ukellela chedip | Fabaceae | Koror, Ngerkebesand, Babeldaob |
| Chamaecrista nictitans | English: partridge pea, Japanese tea senna | Fabaceae | Koror, Malakal, Babeldaob |
| Chloris barbata | English: swollen fingergrass | Poaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Peleliu |
| Chloris radiata | English: plush-grass, radiate fingergrass | Poaceae | Koror, Babeldaob |
| Chloris virgata | English: feather finger grass, feathered chloris, feathery Rhodes grass, oldland grass, sweet grass | Poaceae | Babeldaob |
| Chromolaena odorata | English: chromolaena; Palauan: kesengesil, ngesngesil | Asteraceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Peleliu, Ngidech |
| Cinnamomum verum | English: cinnamon tree; Palauan: ochod ra ngebard | Lauraceae | Koror, Babeldaob, Chelbacheb, Urukthapel |
| Clerodendrum buchananii var. fallax | English: red clerodendrum, pagoda-flower; Palauan: but a cherechar, butcherechár, butecherechar | Lamiaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Kayangel, Peleliu, Ngercheu, Aulupse‘el, Ngchelobel, Ngeanges, Ngerchong, Ngeremdiu, Ngidech, Ulong, Urukthapel |
| Clerodendrum paniculatum | English: pagoda plant, pagoda flower; Palauan: butcherechár, butecherechar | Lamiaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Peleliu |
| Clerodendrum quadriloculare | English: bronze-leaved clerodendrum; Palauan: kleuang | Lamiaceae | Koror, Ngerkebesand, Babeldaob, Angaur, Kayangel, Peleliu, Ngercheu |
| Clidemia hirta | English: Koster’s curse, soap bush; Palauan: kúi, kui | Melastomataceae | Babeldaob |
| Clitoria ternatea | English: butterfly pea, Asian pigeonwings; Palauan: kles | Fabaceae | Koror, Malakal, Ngerkebesang, Babeldaob |
| Costus woodsonii | English: Indian-head ginger, red cane; Hawaiian: ‘awapuhi ‘inikini po‘o | Costaceae | Ngerkebesang |
| Crinum asiaticum | English: Asiatic poisonbulb, crinum, false spider lily, poisonbulb; Palauan: bisecherad ra ngebard | Liliaceae | Koror, Angaur, Ngerchong, Sonsorol |
| Crotalaria micans | English: crotalaria | Fabaceae | Babeldaob |
| Crotalaria retusa | English: devil-bean, wedge-leaf crotalaria, wedge-leaf rattlepod | Fabaceae | Peleliu |
| Crotalaria spectabilis | English: rattlebox, showy crotalaria, showy rattlebox, showy rattlepod; Palauan: kuroteraria | Fabaceae | Koror, Ngerkebesand, Babeldaob |
| Crotalaria trichotoma | English: curara-pea | Fabaceae | Babeldaob |
| Cryptostegia madagascariensis | English: Madagascar rubbervine | Ascelepiadaceae | Koror, Babeldaob |
| Cyperus compressus | English: flat sedge | Cyperaceae | Koror, Malakal, Babeldaob, Angaur, Sonsorol |
| Cyperus difformis | English: dirty-Dora, one-arm sedge, rice sedge, small-flower umbrella-plant, variable flat sedge | Cyperaceae | Malakal, Babeldaob |
| Cyperus distans | English: slender cyperus | Cyperaceae | Koror, Babeldaob |
| Cyperus involucratus | English: umbrella sedge, umbrella plant, dwarf papyrus grass; Palauan: deus | Cyperaceae | Koror |
| Cyperus rotundus | English: nut grass, nutsedge, purple nutsedge, cocograss; Palauan tamanengi | Cyperaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Peleliu, Ngercheu |
| Dactyloctenium aegyptium | English: beach wiregrass, button grass, coast button grass, comb fringe grass, crowfoot grass, duck grass, finger comb grass | Poaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Kayangel, Peleliu, Fanna, Sonsorol |
| Datura metel | English: datura, downy thorn-apple, Hindu datura, hoary thorn-apple, jimson-weed | Solanaceae | Malakal, Babeldaob, Angaur, Peleliu, Ngercheu |
| Dentella repens | English: dentella | Rubiaceae | Koror, Malakal, Babeldaob, Angaur, Peleliu |
| Derris elliptica | English: derris; Palauan: deris, dub | Fabaceae | Koror, Malakal, Ngerkebesang, Babeldaob |
| Desmanthus pernambucanus | English: pigeon bundleflower | Fabaceae | Koror, Malakal, Ngerkebesang, Babeldaob |
| Desmanthus virgatus | English: slender mimosa, virgate mimosa | Fabaceae | Koror, Malakal, Babeldaob |
| Desmodium tortuosum | English: Florida beggarweed, Spanish clover, dixie ticktrefoil | Fabaceae | Koror, Babeldaob |
| Dieffenbachia seguine | English: dieffenbachia, dumb cane | Araceae | Koror, Malakal, Ngerkebesang, Peleliu |
| Digitaria ciliaris | English: Henry's crabgrass, smooth crabgrass, tropical crab grass, large crab grass, southern crabgrass, fingergrass, summer grass | Poaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Kayangel, Peleliu, Ngercheu, Bab el Omekang, Bkul a Chesemiich, Ngemelis, Ngerchong, Ngidech, Pulo Ana |
| Digitaria violascens | English: smooth crabgrass, violet crabgrass; Palauan: sau | Poaceae | Koror, Ngerkebesand, Babeldaob |
| Dissotis rotundifolia | English: dissotis, Spanish shawl, pink lady | Melastomataceae | Koror, Babeldaob |
| Duranta erecta | English: duranta, golden dewdrop, pigeon-berry, sky-flower | Verbenaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Peleliu, Ngercheu, Sonsorol |
| Echinochloa colona | English: awnless barnyard grass (Australia), corn panic grass, Deccan grass, jungle ricegrass, jungle rice, millet-rice, shama millet; Palauan: uaum | Poaceae | Koror, Malakal, Babeldaob, Angaur, Aulupse‘el |
| Echinochloa crus-galli | English: barnyard grass, cockspur grass | Poaceae | Babeldaob |
| Eichhornia crassipes | English: water hyacinth; Palauan: bung el ralm | Pontederiaceae | Koror, Ngerkebesand, Babeldaob |
| Elaeis guineensis | English: African oil palm | Arecaceae | Koror, Babeldaob |
| Epipremnum pinnatum cv. 'Aureum' | English: pothos, money plant | Araceae | Koror, Malakal, Ngerkebesang, Babeldaob |
| Episcia reptans | Gesneriaceae | Koror, Ngerkebesand, Babeldaob | |
| Eragrostis atrovirens | English: thalia love grass, wiry lovegrass; Palauan: ouemoket | Poaceae | Babeldaob |
| Eragrostis ciliaris | English: gophertail grass, gophertail lovegrass, lovegrass, woolly love grass; Palauan: ouemoket | Poaceae | Babeldaob |
| Eragrostis pilosa | English: hairy love grass, Indian love grass, soft lovegrass | Poaceae | Koror, Babeldaob |
| Erigeron bellioides | English: bellorita, fleabane daisy | Asteraceae | Koror, Babeldaob, Angaur, Kayangel, Peleliu, Ngercheu, Ngemelis |
| Eugenia uniflora | English: Surinam cherry, red Brazil cherry | Myrtaceae | Koror |
| Eustachys petraea | English: pinewoods fingergrass | Poaceae | Angaur |
| Falcataria moluccana | English: Molucca albizia; Palauan: ukall ra ngebard | Fabaceae | Koror, Babeldaob |
| Ficus benjamina | English: weeping fig, baka, Java fig, weeping fig, Benjamin tree | Moraceae | Malakal, Babeldaob, Ngercheu |
| Flemingia macrophylla | Fabaceae | Koror, Ngerkebesand, Babeldaob | |
| Flemingia strobilifera | English: luck plant, wild hops; Palauan: besungelaiei, pesungel a iei | Fabaceae | Koror, Ngerkebesand, Babeldaob, Angaur |
| Gmelina asiatica | English: badhara bush, Asiatic beechberry, oval-leafed gmelina; Palauan: kalngebang? | Lamiaceae | Koror |
| Hamelia patens | English: redhead, scarletbush | Rubiaceae | Koror, Peleliu |
| Hedychium coronarium | English: white ginger, butterfly lily, ginger lily, garland flower | Zingiberaceae | Koror, Ngerkebesang, Babeldaob |
| Hemigraphis alternata | English: metal leaf; red ivy, cemetery plant (Fiji) | Acanthaceae | Koror, Malakal, Ngerkebesang, Babeldaob |
| Hevea brasiliensis | English: hevea, Brazilian rubber tree, Para rubber tree | Euphorbiaceae | Koror, Babeldaob |
| Hyptis capitata | English: knobweed | Lamiaceae | Koror, Malakal, Ngerkebesang, Babeldaob |
| Hyptis pectinata | English: comb hyptis, comb bushmint, mint weed, purple top | Lamiaceae | Babeldaob, Angaur |
| Imperata conferta | English: plume grass | Poaceae | Koror, Babeldaob, Angaur, Peleliu, Aulupse‘el |
| Imperata cylindrica | English: blady grass, cogon grass, satintail; Palauan: kasoring | Poaceae | Babeldaob, Angaur |
| Inga edulis | English: ice cream bean | Fabaceae | Koror |
| Ipomoea aquatica | English: aquatic morning glory, swamp cabbage, water spinach, ung-choi, kang kong; Palauan: kangkum, kangum, kankum | Convolvulaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Peleliu |
| Ipomoea carnea subsp. fistulosa | English: bush morning glory, tree ipomoea | Convolvulaceae | Koror, Babeldaob |
| Ipomoea quamoclit | English: Cupid's flower, cypress vine, cypressvine morning-glory, star of Bethlehem, star-glory, sweet-willy; Palauan: asangao | Convolvulaceae | Koror, Babeldaob |
| Ipomoea triloba | English: Aiea morning-glory, little bell; Palauan: orech, torech | Convolvulaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Peleliu |
| Jatropha curcas | English: physic nut, purging nut, Barbados nut | Euphorbiaceae | Koror, Babeldaob |
| Jatropha gossypiifolia | English: bellyache bush, cotton-leaved physic nut | Euphorbiaceae | Koror, Ngerkebesang |
| Lantana camara | English: lantana | Verbenaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Peleliu, Ngercheu |
| Leonurus japonicus | English: lion’s tail, Chinese motherwort | Lamiaceae | Koror |
| Leucaena leucocephala | English: leucaena, wild tamarind, lead tree; Palauan: telengtungd, telentund | Fabaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Peleliu, Ngercheu, Ngerchong, Sonsorol |
| Livistonia chinensis | English: Chinese fan palm, Chinese fountain palm, fountain palm | Arecaceae | Koror |
| Macroptilium atropurpureum | English: siratro, purple bushbean | Fabaceae | Babeldaob |
| Macroptilium lathyroides | English: cow pea, phasey bean, wild bean | Fabaceae | Babeldaob |
| Melaleuca quinquenervia | English: melaleuca, cajeput, paper bark tree, punk tree | Myrtaceae | Babeldaob |
| Melia azedarach | English: Chinaberry, pride-of-India, indian lilac, Persian lilac, margosa tree, tira | Meliaceae | Koror, Malakal, Babeldaob, Ngercheu |
| Melinis minutiflora | English: melinis, molasses grass | Poaceae | Babeldaob |
| Merremia hederacea | English: ivy woodrose | Convolvulaceae | Koror |
| Mikania micrantha | English: mile-a-minute weed, Chinese creeper, American rope, bittervine; Palauan: teb el yas | Asteraceae | Koror, Malakal, Ngerkebesang, Babeldaob |
| Mimosa diplotricha | English: giant sensitive plant, nila grass; Palauan: mechiuaiu | Fabaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur |
| Mimosa pudica | English: sensitive grass, sensitive plant, shameplant, sleeping grass, touch-me-not; Palauan: mechiuaiu | Fabaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur |
| Muntingia calabura | English: jam tree, strawberry tree, Jamaican cherry, Singapore cherry, Panama cherry, Panama berry, ornamental cherry, calabura, sirsen; Palauan: budo | Tiliaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Kayangel, Peleliu, Ngercheu, Merir, Sonsorol |
| Murraya paniculata | English: orange jessamine, satin-wood, Chinese box, Hawaiian mock orange | Rutaceae | Koror, Ngerkebesand, Babeldaob |
| Nymphaea spp. | English: water lily | Nymphaeaceae | Koror, Babeldaob |
| Panicum maximum | English: Guinea grass, green panic, buffalograss | Poaceae | Koror, Babeldaob |
| Panicum repens | English: torpedo grass, couch panicum, creeping panic | Poaceae | Koror |
| Paspalum paniculatum | English: Russell river grass, galmarra grass | Poaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur |
| Paspalum scrobiculatum | English: rice grass; creeping paspalum, ditch millet, Indian paspalum, kodo millet, water couch; Palauan: desum | Poaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Peleliu, Ngercheu, Ngeanges, Ngeremdiu |
| Passiflora foetida | English: love-in-a-mist, wild passion fruit, passionflower, stinking passionflower; Palauan: kudamono | Passifloraceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Peleliu, Ngercheu |
| Passiflora suberosa | English: wild passionfruit, devil's pumpkin, indigo berry, corky passionflower, corkstem passionflower | Passifloraceae | Koror, Malikal |
| Pennisetum polystachion | English: mission grass, feathery pennisetum; Palauan: desum | Poaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Peleliu |
| Pennisetum purpureum | English: elephant grass, napier grass, merker grass; Palauan: bokso | Poaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Peleliu |
| Pennisetum setaceum | English: fountain grass | Poaceae | Ngerkebesang, Babeldaob |
| Pereskia aculeata | English: Barbados gooseberry, leafy cactus, lemon vine, pereskia creeper, primitive cactus, Spanish gooseberry | Cactaceae | Ngercheu |
| Pilea microphylla | English: artillery plant, gunpowder plant, pistol plant, rockweed | Urticaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Kayangel, Peleliu, Ngercheu, Ngerchong, Urukthapel, Sonsorol |
| Pistia stratiotes | English: water lettuce, tropical duckweed | Araceae | Babeldaob |
| Pithecellobium dulce | English: Madras thorn, Manila tamarind, sweet inga; Palauan: kamatsíri, kamatsiri | Fabaceae | Koror, Babeldaob |
| Pluchea carolinensis | English: sour bush | Asteraceae | Peleliu |
| Psidium cattleianum | English: strawberry guava, cherry guava, Cattley guava, Chinese guava | Myrtaceae | Koror |
| Psidium guajava | English: guava; Palauan: guabang, kuabang | Myrtaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Peleliu, Bkul a Chesemiich, Ngerchong, Sonsorol |
| Quisqualis indica | English: Rangoon creeper | Combretaceae | Ngerkebesang, Babeldaob |
| Ricinus communis | English: castor bean, castor-oil plant; Palauan: gelug, uluchula skoki | Euphorbiaceae | Angaur, Angaur, Peleliu |
| Samanea saman | English: monkeypod, rain tree, saman | Fabaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Kayangel, Peleliu |
| Sambucus mexicana | English: elderberry, Mexican elder | Caprifoliaceae | Koror |
| Sanchezia parvibracteata | English: sanchezia | Acanthaceae | Koror, Malakal, Ngerkebesang, Babeldaob |
| Schefflera arboricola | English: dwarf brassia, dwarf schefflera, Hawaiian elf schefflera | Araliaceae | Koror |
| Senna alata | English: candle bush; candelabra bush, Roman candle tree, emperor's candlesticks, alcapulco; Palauan: kerula besokel, yult | Fabaceae | Koror, Ngerkebesang, Babeldaob, Peleliu |
| Senna obtusifolia | English: habucha, coffeeweed, sicklepod | Fabaceae | Koror, Babeldaob, Peleliu |
| Senna occidentalis | English: antbush, coffee senna; Palauan: korriu, kurriu | Fabaceae | Koror, Malakal, Babeldaob, Angaur |
| Senna siamea | English: cassod tree, kassod tree, Siamese cassia, pheasantwood, Thailand shower | Fabaceae | Koror, Ngerkebesand, Babeldaob |
| Senna surattensis | English: scrambled eggs | Fabaceae | Babeldaob |
| Sesbania grandiflora | English: sesbania, hummingbird tree, sesban, scarlet wisteria tree, corkwood tree; Palauan: katurai | Fabaceae | Koror, Malakal, Babeldaob, Ngerchong |
| Setaria sphacelata | English: African bristle grass, golden timothy | Poaceae | Koror, Babeldaob |
| Solanum torvum | English: prickly solanum, devil's fig, turkeyberry, terongan | Solanaceae | Babeldaob |
| Sorghum bicolor | English: Sudan grass | Poaceae | Malakal |
| Sorghum halepense | English: Johnson grass, Aleppo grass, Aleppo milletgrass | Poaceae | Koror, Malakal, Ngerkebesang, Babeldaob |
| Spathodea campanulata | English: African tulip tree, fireball, fountain tree; Palauan: orsachel kui | Bignoniaceae | Koror, Ngerkebesand, Babeldaob |
| Sporobolus diander | English: Indian dropseed, tussock dropseed | Poaceae | Koror, Babeldaob, Ngerchong |
| Stachytarpheta cayennensis | English: blue rat's tail, dark-blue snakeweed, false verbena, nettleleaf velvetberry; Palauan: louch beluu | Verbenaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Peleliu, Ngidech, Urukthapel |
| Stenotaphrum secundatum | English: buffalo grass, St. Augustine grass | Poaceae | Ngerchong |
| Striga asiatica | English: witchweed | Scrophulariaceae | Koror, Babeldaob |
| Stylosanthes guianensis | English: stylo, Brazilian lucerne, tropical lucerne, Nigerian stylo | Fabaceae | Babeldaob |
| Syngonium angustatum | English: arrowhead plant, goosefoot plant | Araceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Peleliu |
| Syzygium cumini | English: Java plum; jambolan plum; Palauan: mesegerak, mesekerrák, mesekerrak, mesigerak | Myrtaceae | Koror, Babeldaob, Aulupse‘el, Ngerukuid |
| Tephrosia candida | English: white tephrosia, white hoary-pea | Fabaceae | Babeldaob |
| Thevetia peruviana | English: yellow oleander, be-still tree, lucky nut | Apocynaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Kayangel, Peleliu |
| Thunbergia grandiflora | English: Bengal trumpet, blue trumpet vine, clock vine, skyvine, large-flowerd thunbergia; Palauan: bung el etiu | Acanthaceae | Koror, Malakal, Babeldaob, Kayangel |
| Timonius timon | English: liberal (Palau) | Rubiaceae | Ngerkebesang, Babeldaob, Angaur, Kayangel, Peleliu, Ngercheum, Bkul a Chesemiich, Ngchelobel, Ngeanges, Ngerchong |
| Tithonia diversifolia | English: tree marigold, shrub sunflower, Mexican sunflower, Japanese sunflower | Asteraceae | Koror, Babeldaob |
| Tradescantia spathacea | English: oyster plant, boat plant, boat lily, moses in a boat; Palauan: kobesos | Commelinaceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Kayangel, Peleliu, Ngercheu, Sonsorol |
| Tradescantia zebrina | English: wandering zebrina, wandering jew, inchplant | Commelinaceae | Koror, Ngerkebesand, Babeldaob, Angaur, Kayangel, Peleliu, Ngercheu |
| Triumfetta rhomboidea | English: Chinese burr, paroquet burr, burr bush | Tiliaceae | Babeldaob |
| Turnera subulata | English: white alder | Turneraceae | Koror, Malakal, Ngerkebesang, Babeldaob |
| Turnera ulmifolia | English: yellow alder, sage rose, West Indian holly, ramgoat dashalong | Turneraceae | Koror, Malakal, Ngerkebesang, Babeldaob, Angaur, Kayangel, Peleliu, Ngerchong |
| Urochloa mutica | English: California grass, para grass, buffalo grass, Mauritius grass, signal grass | Poaceae | Koror, Malakal, Babeldaob |
| Urochloa reptans | English: creeping panic grass, running grass | Poaceae | Angaur |
| Urochloa subquadripara | English: brachiaria, green summer grass, tropical signalgrass, cori grass | Poaceae | Malakal, Sonsorol |
| Vitex parviflora | English: small-leaved vitex, smallflower chastetree | Verbenaceae | Malakal |
| Xanthosoma sagittifolium | English: new cocoyam, tania, yautia; Palauan: bisech ra ruk, eball | Araceae | Koror, Peleliu, Sonsorol |
| Xenostegia tridentata | English: African morningvine; Palauan: kebeas | Convolvulaceae | Babeldaob |
| Youngia japonica | English: oriental hawksbeard | Asteraceae | Koror |
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