Plant Threats to Pacific Ecosystems

PIER plant species present on Pis 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 Pis 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?
Achyranthes aspera   (Amaranthaceae)   herb No
Asclepias curassavica   (Apocynaceae)   herb No
Cenchrus brownii   (Poaceae) Cenchrus inflexus R. Br.; Cenchrus viridis Spreng. grass No
Centella asiatica   (Apiaceae) Hydrocotyle asiatica L.; Hydrocotyle erecta L. f. 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
Dioscorea bulbifera   (Dioscoreaceae) Dioscorea latifolia Benth. vine 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
Gomphrena globosa   (Amaranthaceae)   herb No
Ipomoea violacea   (Convolvulaceae) Convolvulus tuba Schlechtend.; Ipomoea macrantha Roem. & Schult.; Ipomoea tuba (Schlechtend.) G. Don vine No
Mirabilis jalapa   (Nyctaginaceae)   herb No
Nicotiana tabacum   (Solanaceae)   herb No
Oplismenus compositus   (Poaceae) Panicum compositum L. grass No
Paspalum conjugatum   (Poaceae)   grass No
Phyllanthus amarus   (Phyllanthaceae) Phyllanthus niruri sensu various Pacific botanists. herb No
Physalis angulata   (Solanaceae) Physalis lanceifolia Nees herb No
Ruellia blechum   (Acanthaceae) Barleria pyramidata Lam.; Blechum brownei Juss.; Blechum pyramidatum (Lam.) Urb. herb No
Sida acuta   (Malvaceae)   herb No
Spermacoce remota   (Rubiaceae) Borreria laevis sensu various authors.; Spermacoce assurgens Ruiz & Pav. herb No
Sphagneticola trilobata   (Asteraceae) Thelechitonia trilobata (L.) H. Rob. & Cautrec.; Wedelia trilobata (L.) Hitchc. herb No
Stachytarpheta cayennensis   (Verbenaceae) Stachytarpheta dichotoma (Ruiz & Pav.) Vahl.; Stachytarpheta urticaefolia (Salisb.) Sims; Stachytarpheta urticifolia (Salisb.) Sims herb No
Tradescantia spathacea   (Commelinaceae) Rhoeo discolor Hance ex Walp.; Rhoeo spathacea (Sw.) Stearn; Tradescantia discolor L'Hér. 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 12MAY2013.