Plant Threats to Pacific Ecosystems

PIER plant species present on Woleai Atoll listed by scientific name

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

Woleai Atoll ]   [ Yap Islands ]   [ Federated States of Micronesia ]   [ Pacific region ]

This table lists invasive and potentially invasive plant species profiled by the Pacific Island Ecosystems at Risk project (PIER) that occur on Woleai Atoll. 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?
Achyranthes aspera   (Amaranthaceae)   herb No
Agave sisalana   (Asparagaceae)   succulent No
Alocasia macrorrhizos   (Araceae) Alocasia indica (Lour.) Spach; Alocasia plumbea Van Houtte; Arum indicum Lour.; Arum macrorrhizon L.; Colocasia indica (Lour.) Kunth herb No
Annona muricata   (Annonaceae)   tree No
Artemisia vulgaris   (Asteraceae)   herb No
Asclepias curassavica   (Apocynaceae)   herb No
Bidens pilosa   (Asteraceae)   herb No
Caesalpinia bonduc   (Fabaceae) Caesalpinia bonducella (L.) Fleming; Guilandina bonduc L. vine No
Caesalpinia pulcherrima   (Fabaceae) Poinciana pulcherrima L. shrub/tree No
Canna x generalis   (Cannaceae)   herb No
Casuarina equisetifolia   (Casuarinaceae) Casuarina litorea L. ex Fosberg & Sachet tree No
Cenchrus brownii   (Poaceae) Cenchrus inflexus R. Br.; Cenchrus viridis Spreng. grass No
Cenchrus echinatus   (Poaceae)   grass No
Centella asiatica   (Apiaceae) Hydrocotyle asiatica L.; Hydrocotyle erecta L. f. herb No
Chrysopogon aciculatus   (Poaceae) Andropogon acicularis Retz. ex Roem. & Schult.; Andropogon aciculatus Retz.; Rhaphis acicularis (Retz. ex Roem. & Schult.) Desv.; Rhaphis aciculata (Retz.) Honda grass No
Citrus aurantiifolia   (Rutaceae) Citrus acida Roxb.; Citrus lima Lunan; Limonia aurantiifolia Christm. tree No
Colocasia esculenta   (Araceae) Arum esculentum L.; Caladium esculentum (L.) Vent.; Colocasia antiquorum Schott herb No
Crinum asiaticum   (Amaryllidaceae) Crinum amabile Donn ex Ker Gawl. herb No
Cyanthillium cinereum   (Asteraceae) Blumea chinensis (L.) DC.; Conyza chinensis L.; Conyza cinerea L.; Senecioides cinerea (L.) Kuntze ex Britt. & Wilson; Serratula cinerea (L.) Roxb.; Vernonia cinerea (L.) Less.; Vernonia cinerea var. parviflora (Reinw.) DC. herb No
Cyperus haspan   (Cyperaceae) Cyperus halpan L. [incorrect spelling] sedge No
Echinochloa crus-galli   (Poaceae) Panicum crus-galli L. grass No
Eclipta prostrata   (Asteraceae) Eclipta alba (L.) Hassk.; Eclipta erecta L.; Eclipta punctata L.; Verbesina alba L.; Verbesina prostrata L. herb No
Eleocharis geniculata   (Cyperaceae)   sedge No
Eleusine indica   (Poaceae) Cynosurus indicus L.; Eleusine japonica Steud. grass No
Eragrostis amabilis   (Poaceae) Eragrostis plumosa (Retz.) Link; Eragrostis tenella (L.) P. Beauv. ex Roem. & Schult.; Poa tenella L. grass No
Euphorbia cyathophora   (Euphorbiaceae) Poinsettia cyathophora (Murray) Klotzsch & Garcke herb No
Euphorbia hirta   (Euphorbiaceae) Chamaesyce hirta (L.) Millsp. herb No
Euphorbia prostrata   (Euphorbiaceae) Chamaesyce prostrata (Aiton) Small herb No
Fuirena umbellata   (Cyperaceae)   sedge No
Gomphrena globosa   (Amaranthaceae)   herb No
Hedychium coronarium   (Zingiberaceae)   herb No
Ipomoea batatas   (Convolvulaceae) Convolvulus batatas L. vine No
Ipomoea violacea   (Convolvulaceae) Convolvulus tuba Schlechtend.; Ipomoea macrantha Roem. & Schult.; Ipomoea tuba (Schlechtend.) G. Don vine No
Ischaemum timorense   (Poaceae)   grass No
Kyllinga brevifolia   (Cyperaceae) Cyperus brevifolius (Rottb.) Endl. ex Hassk. sedge No
Lindernia antipoda   (Linderniaceae) Ruellia antipoda L. herb No
Ludwigia octovalvis   (Onagraceae) Jussiaea erecta sensu various authors; Jussiaea suffruticosa L. herb No
Mirabilis jalapa   (Nyctaginaceae)   herb No
Muntingia calabura   (Muntinginaceae)   tree No
Paspalum conjugatum   (Poaceae)   grass No
Paspalum distichum   (Poaceae) Paspalum paspalodes (Michx.) Scribn. grass No
Phyllanthus amarus   (Phyllanthaceae) Phyllanthus niruri sensu various Pacific botanists herb No
Pilea microphylla   (Urticaceae)   herb No
Polygonum minus   (Polygonaceae) Persicaria minor (Huds.) Opiz herb No
Pseuderanthemum carruthersii   (Acanthaceae) Pseuderanthemum atropurpureum (W. Bull) Radlk.; Pseuderanthemum reticulatum Radlk. shrub No
Senna occidentalis   (Fabaceae) Cassia occidentalis L. shrub No
Sorghum bicolor   (Poaceae) Holcus bicolor L.; Sorghum bicolor nothosubsp. drummondii; Sorghum sudanense (Piper) Stapf grass No
Spermacoce remota   (Rubiaceae) Borreria laevis sensu various authors; Spermacoce assurgens Ruiz & Pav. herb No
Synedrella nodiflora   (Asteraceae)   herb No
Syzygium malaccense   (Myrtaceae) Caryophyllus malaccensis (L.) Stokes; Eugenia malaccensis L. tree No
Tradescantia spathacea   (Commelinaceae) Rhoeo discolor Hance ex Walp.; Rhoeo spathacea (Sw.) Stearn; Tradescantia discolor L'H#r. herb No
Zoysia matrella   (Poaceae) Agrostis matrella L.; Osterdamia matrella (L.) Kuntze; Zoysia pungens Willd. grass 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 18DEC2017.