Report to the Republic of Palau: 2008 update on Invasive Plant ...

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Table D. Summary <strong>of</strong> major invasive species present in <strong>Palau</strong> with recommendations for <strong>the</strong>ir management Scientific Name Common Names (abridged) Family Comments and recommendations *† *† Pennisetum setaceum fountain grass Poaceae Trace source(s) <strong>of</strong> distribution, map and eradicate if feasible. Pereskia aculeata Barbados gooseberry, leafy cactus Cactaceae Eradicate on Ngercheu (Carp) Island and if found elsewhere. * Pistia stratiotes duckweed, water lettuce Araceae Locate source; eradicate if possible. † Pi<strong>the</strong>cellobium dulce kamatsíri, opiuma, Madras thorn Fabaceae Locate any additional specimens; moni<strong>to</strong>r for invasiveness; eradicate if <strong>of</strong> limited extent. † † *† Pluchea carolinensis sour bush Asteraceae Consider eradication (low priority) <strong>to</strong> prevent spread <strong>to</strong> additional islands Pluchea indica Indian fleabane, Indian pluchea, Indian camphorweed Asteraceae Consider eradication (low priority) <strong>to</strong> prevent spread <strong>to</strong> additional islands Pseuderan<strong>the</strong>mum carru<strong>the</strong>rsii Acanthaceae Discourage fur<strong>the</strong>r planting; control outside <strong>of</strong> cultivation; eradicate on Sonsorol. Psidium cattleianum strawberry guava Myrtaceae Attempt <strong>to</strong> locate previously reported specimen(s) and eradicate if found. Psidium guajava guabang, kuabang, guava Myrtaceae Control as needed if found in sensitive and natural areas. † Quisqualis indica Rangoon creeper Combretaceae Moni<strong>to</strong>r for invasiveness. Ricinus communis gelug, maskerekur, uluchula skoki, cas<strong>to</strong>r bean Euphorbiaceae Moni<strong>to</strong>r spread; work <strong>to</strong> reduce existing populations. Schefflera actinophylla oc<strong>to</strong>pus tree Araliaceae Eradicated; moni<strong>to</strong>r for reintroduction. † Senna siamea cassod tree Siamese cassia Fabaceae Map distribution. Discourage fur<strong>the</strong>r planting; eradicate if <strong>of</strong> limited extent. † Senna surratensis scrambled eggs Fabaceae Sesbania grandiflora katurai, hummingbird tree, scarlet wisteria tree Fabaceae * Solanum <strong>to</strong>rvum prickly solanum, devil’s fig Solanaceae *† Map distribution. Discourage fur<strong>the</strong>r planting; eradicate if <strong>of</strong> limited extent. Discourage fur<strong>the</strong>r planting; moni<strong>to</strong>r closely for any spread; eradicate if it begins <strong>to</strong> spread. Evaluate for extent; kill plants when found; encourage and assist landowners <strong>to</strong> control plants on <strong>the</strong>ir land; eradicate if <strong>of</strong> limited extent. Spathodea campanulata orsachel kui, African tulip tree Bignoniaceae Eliminate remaining infestation; moni<strong>to</strong>r for reintroduction. Sphagneticola [Wedelia] trilobata ngesil ra ngebard, Singapore daisy Asteraceae Discourage fur<strong>the</strong>r planting; local control as needed; exclude from islands where not present and promptly eradicate if found on <strong>the</strong>m. * Striga asiatica Asiatic witchweed Scrophulariaceae Map extent <strong>of</strong> infestation and evaluate for possible eradication. Syngonium angustatum arrowhead plant, goosefoot plant Araceae Control outside <strong>of</strong> cultivation, especially when growing in forested areas. † Syzygium cumini mesekerrák, Java plum Myrtaceae Try <strong>to</strong> locate, evaluate for invasiveness and possible eradication. Tecoma stans yellow bells, yellow-elder, yellow trumpetbush Bignoniaceae Moni<strong>to</strong>r for spread; eradicate on Sonsorol. † Tephrosia candida white tephrosia Fabaceae Try <strong>to</strong> locate, evaluate for invasiveness and possible eradication. 40
Table D. Summary <strong>of</strong> major invasive species present in <strong>Palau</strong> with recommendations for <strong>the</strong>ir management Scientific Name Common Names (abridged) Family Comments and recommendations * Thunbergia grandiflora bung el etiu, blue trumpet vine, Bengal trumpet Acanthaceae Timonius timon Liberal Rubiaceae Tradescantia spathacea kobesos, oyster plant, boat plant, boat lily, Moses in a boat Discourage planting; control as needed; eliminate plants outside <strong>of</strong> cultivation; eradicate in Melekeok and Aimeliik/Ngatpang; evaluate for eventual eradication. Eradicate infestations on <strong>the</strong> Rock Islands; discourage planting; remove planted specimens and any reproduction on Ngerkebesang, Babeldaob and Kayangel. Commelinaceae Discourage fur<strong>the</strong>r planting and dumping; control outside <strong>of</strong> cultivation. Tradescantia zebrina wandering jew Commelinaceae Discourage fur<strong>the</strong>r planting and dumping; control outside <strong>of</strong> cultivation. Turnera subulata white alder Turneraceae Discourage planting; control in sensitive and natural areas. Turnera ulmifolia yellow alder, sage rose Turneraceae Discourage planting; control in sensitive and natural areas. *† *High priority for eradication † Eradication can probably be accomplished at low cost Vitex parviflora small-leaved vitex Verbenaceae Try <strong>to</strong> locate, eradicate if found. 41
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Page 11 and 12: Leucas lavandulifolia [voucher 9929
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Synonym Listed as Family Gomphrena
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Fosberg, F. R., and M.-H. Sachet. 1
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