Plant Threats to Pacific Ecosystems

PIER plant species present on Île Tiga listed by scientific name

A product of the Pacific Island Ecosystems at Risk project (PIER)

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This table lists invasive and potentially invasive plant species profiled by the Pacific Island Ecosystems at Risk project (PIER) that occur on Île Tiga. It includes those of environmental concern (including those that are probably of threat only to islands with high elevations) as well as agricultural and ruderal weeds.  Each species is linked by its scientific name to an individual write-up containing relevant information.

The information in this table is based on the supporting data and may not represent the current situation. Note also there may be discrepancies among data presented at geographic resolutions (e.g., island vs. island group vs. country-territory-state levels), depending upon the reliability of the data at each level.

Species are listed in alphabetic order.  You can browse this list or use the "find" function on your web browser to search by scientific name.

Can't find it here?  Check the list of synonyms for other names (the more common synonyms are included below) or search other lists and databases available on the Internet.

Stumped by botanical terms?  Here are links to a brief glossary and a search engine for botanical terms.

Scientific name (+Family) Often-used other Latin names Habit Primarily a threat
at high elevations?
Ageratum conyzoides   (Asteraceae)   herb No
Asclepias curassavica   (Apocynaceae)   herb No
Asparagus setaceus   (Asparagaceae) Asparagopsis setacea Kunth; Protasparagus setaceus (Kunth) Oberm. vine No
Bidens pilosa   (Asteraceae)   herb No
Catharanthus roseus   (Apocynaceae) Lochnera rosea (L.) Reichb. ex Steud.; Vinca rosea L. herb No
Conyza sumatrensis   (Asteraceae) Conyza albida Willd. ex Spreng.; Erigeron sumatrensis Retz. herb No
Desmodium adscendens   (Fabaceae) Desmodium ovalifolium Guill. & Perr.; Hedysarum adscendens Sw.; Meibomia adscendens (Sw.) Kuntze herb No
Dysphania ambrosioides   (Chenopodiaceae) Chenopodium ambrosioides L. herb No
Emilia sonchifolia   (Asteraceae) Emilia javanica (Burm. f.) C. B. Rob. herb No
Euphorbia cyathophora   (Euphorbiaceae) Poinsettia cyathophora (Murray) Klotzsch & Garcke herb No
Euphorbia hirta   (Euphorbiaceae) Chamaesyce hirta (L.) Millsp.; Euphorbia pilulifera L. herb No
Gossypium barbadense   (Malvaceae) Gossypium brasiliense Macfad.; Gossypium peruvianum Cav. shrub No
Ipomoea hederifolia   (Convolvulaceae) Ipomoea angulata Lam.; Ipomoea luteola Jacq.; Quamoclit hederifolia (L.) G. Don vine No
Kalanchoe pinnata   (Crassulaceae) Bryophyllum calycinum Salisb.; Bryophyllum pinnatum (Lam.) Oken; Crassula pinnata L. f. succulent No
Lantana camara   (Verbenaceae)   shrub No
Lepidium virginicum   (Brassicaceae)   herb No
Malvastrum coromandelianum   (Malvaceae) Malva coromandeliana L.; Malvastrum tricuspidatum A. Gray herb No
Melinis minutiflora   (Poaceae) Melinis tenuinervis Stapf; Panicum melinus Trin.; Panicum minutiflorum (P. Beauv.) Raspail grass No
Parthenium hysterophorus   (Asteraceae)   herb No
Passiflora suberosa   (Passifloraceae)   vine No
Pedilanthus tithymaloides   (Euphorbiaceae) Euphorbia tithymaloides L. herb No
Physalis minima   (Solanaceae) Physalis lagascae R. & S. herb No
Portulaca oleracea   (Portulacaceae)   herb No
Rhynchosia minima   (Fabaceae)   herb No
Ricinus communis   (Euphorbiaceae)   shrub No
Rivina humilis   (Phytolaccaceae) Rivina laevis L. herb No
Salvia coccinea   (Lamiaceae)   herb No
Salvia occidentalis   (Lamiaceae)   herb No
Senna occidentalis   (Fabaceae) Cassia occidentalis L. shrub No
Senna surattensis   (Fabaceae) Cassia surattensis N.L. Burm tree No
Sida acuta   (Malvaceae)   herb No
Sigesbeckia orientalis   (Asteraceae) Siegesbeckia orientalis L. herb No
Solanum nigrum   (Solanaceae)   herb No
Sonchus oleraceus   (Asteraceae) Sonchus asper sensu various authors herb No
Stachytarpheta cayennensis   (Verbenaceae) Stachytarpheta dichotoma (Ruiz & Pav.) Vahl.; Stachytarpheta urticaefolia (Salisb.) Sims; Stachytarpheta urticifolia (Salisb.) Sims herb No
Synedrella nodiflora   (Asteraceae)   herb No
Tithonia diversifolia   (Asteraceae) Mirasolia diversifolia Hemsl. shrub No
Tradescantia spathacea   (Commelinaceae) Rhoeo discolor Hance ex Walp.; Rhoeo spathacea (Sw.) Stearn; Tradescantia discolor L'Hér. herb No
Tridax procumbens   (Asteraceae)   herb No
Turnera ulmifolia   (Passifloraceae)   herb No

Need more info?  Have questions?  Comments?  Information to contribute?  Contact PIER! (pier@hear.org)

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This page was last regenerated on 26FEB2019.