Plant Threats to Pacific Ecosystems

PIER plant species present on Eastern Island 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 Eastern Island. 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?
Bidens alba   (Asteraceae) Bidens pilosa L. var. radiata Shultz-Bip.; Coreopsis alba L. herb No
Brassica nigra   (Brassicaceae)   herb No
Casuarina equisetifolia   (Casuarinaceae) Casuarina litorea L. ex Fosberg & Sachet tree No
Conyza canadensis   (Asteraceae) Erigeron canadensis L. herb No
Coronopus didymus   (Brassicaceae) Lepidium didymum L. herb No
Crinum asiaticum   (Amaryllidaceae) Crinum amabile Donn ex Ker Gawl. herb No
Cynodon dactylon   (Poaceae)   grass No
Dactyloctenium aegyptium   (Poaceae) Cynosurus aegyptius L.; Eleusine aegyptiaca (L.) Desf. grass No
Digitaria ciliaris   (Poaceae) Digitaria adscendens (Kunth) Henrard grass No
Eleusine indica   (Poaceae) Cynosurus indicus L.; Eleusine japonica Steud. grass No
Euphorbia cyathophora   (Euphorbiaceae) Poinsettia cyathophora (Murray) Klotzsch & Garcke herb No
Euphorbia prostrata   (Euphorbiaceae) Chamaesyce prostrata (Aiton) Small herb No
Eustachys petraea   (Poaceae) Chloris petraea Swartz grass No
Lobularia maritima   (Brassicaceae) Alyssum maritimum (L.) Lam. herb No
Phyla nodiflora   (Verbenaceae) Lippia nodiflora (L.) Michx.; Lippia repens Spreng. herb No
Pilea microphylla   (Urticaceae)   herb No
Portulaca oleracea   (Portulacaceae)   herb No
Setaria verticillata   (Poaceae) Panicum verticillatum L.; Pennisetum verticillatum R. Br. grass No
Sonchus oleraceus   (Asteraceae) Sonchus asper sensu various authors herb No
Spergularia marina   (Caryophyllaceae) Spergularia salina J. Presl & C. Presl herb No
Sporobolus pyramidatus   (Poaceae)   grass No
Tribulus cistoides   (Zygophyllaceae)   herb No
Verbesina encelioides   (Asteraceae)   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.