Plant Threats to Pacific Ecosystems

PIER plant species present on Île Walpole 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 Walpole. 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
Argemone mexicana   (Papaveraceae)   herb No
Brassica juncea   (Brassicaceae)   herb No
Catharanthus roseus   (Apocynaceae) Lochnera rosea (L.) Reichb. ex Steud.; Vinca rosea L. herb No
Conyza bonariensis   (Asteraceae) Erigeron bonariensis L.; Erigeron crispus Pourr. herb No
Crinum asiaticum   (Amaryllidaceae) Crinum amabile Donn ex Ker Gawl. herb No
Cynodon dactylon   (Poaceae)   grass No
Desmanthus pernambucanus   (Fabaceae) Mimosa pernambucana L. herb No
Emilia sonchifolia   (Asteraceae) Emilia javanica (Burm. f.) C. B. Rob. herb No
Gynandropsis gynandra   (Cleomaceae) Cleome gynandra L.; Cleome pentaphylla L.; Gynandropsis pentaphylla (L.) DC. herb No
Hippeastrum puniceum   (Amaryllidaceae) Amaryllis punicea Lam. herb No
Ipomoea hederifolia   (Convolvulaceae) Ipomoea angulata Lam.; Ipomoea luteola Jacq.; Quamoclit hederifolia (L.) G. Don vine No
Leucaena leucocephala   (Fabaceae) Acacia glauca Willd.; Leucaena glauca auct.; Mimosa leucocephala Lam. tree No
Malvastrum coromandelianum   (Malvaceae) Malva coromandeliana L.; Malvastrum tricuspidatum A. Gray herb No
Momordica charantia   (Cucurbitaceae) Momordica muricata Willd.; Momordica zeylanica Mill. vine No
Nicotiana tabacum   (Solanaceae)   herb No
Operculina ventricosa   (Convolvulaceae) Operculina turpethum (L.) Silva Manso var. ventricosa (Bertero) Austin & Staples vine No
Oxalis corniculata   (Oxalidaceae) Oxalis repens Thunb. herb No
Panicum maximum   (Poaceae) Megathyrsus maximus (Jacq.) B. K. Simon & S. W. L. Jacobs; Urochloa maxima (Jacq.) R. Webster grass No
Parthenium hysterophorus   (Asteraceae)   herb No
Passiflora suberosa   (Passifloraceae)   vine No
Phyllanthus amarus   (Phyllanthaceae) Phyllanthus niruri sensu various Pacific botanists herb No
Senna sophera   (Fabaceae) Cassia sophera L. shrub No
Sida rhombifolia   (Malvaceae) Sida microphylla Cav. shrub 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
Tecoma stans   (Bignoniaceae) Bignonia stans L.; Stenolobium stans Seem. tree No
Tribulus cistoides   (Zygophyllaceae)   herb No
Tridax procumbens   (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.