This table lists invasive and potentially invasive plant species profiled by the Pacific Island Ecosystems at Risk project (PIER) that occur on Penrhyn (Tongareva) 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? |
| Acacia mangium (Fabaceae) | tree | No | |
| Alocasia macrorrhizos (Araceae) | Alocasia indica Schott; Alocasia plumbea Van Houtte; Arum indicum Lour.; Arum macrorrhizon L.; Colocasia indica (Lour.) Kunth | herb | No |
| Annona muricata (Annonaceae) | tree | No | |
| Bidens pilosa (Asteraceae) | herb | No | |
| Caesalpinia pulcherrima (Fabaceae) | Poinciana pulcherrima L. | shrub/tree | No |
| Casuarina equisetifolia (Casuarinaceae) | Casuarina litorea L. var. litorea; Casuarina littorea Rumph. | tree | No |
| Catharanthus roseus (Apocynaceae) | Lochnera rosea (L.) Reichb. ex Steud.; Vinca rosea L. | herb | No |
| Cenchrus echinatus (Poaceae) | grass | No | |
| Chamaesyce hirta (Euphorbiaceae) | Euphorbia hirta L. | herb | No |
| Chamaesyce hypericifolia (Euphorbiaceae) | Euphorbia glomifera Millsp.; Euphorbia hypericifolia L. | herb | No |
| Chamaesyce prostrata (Euphorbiaceae) | Euphorbia prostrata Aiton | herb | No |
| Chloris barbata (Poaceae) | Chloris inflata Link; Chloris paraguayensis Steud. | grass | No |
| Citrullus lanatus (Cucurbitaceae) | Citrullus aedulis Pangalo; Citrullus vulgaris Schrad. | vine | No |
| Citrus aurantiifolia (Rutaceae) | tree | No | |
| Citrus limon (Rutaceae) | Citrus limonum Risso | tree | No |
| Colocasia esculenta (Araceae) | herb | No | |
| Cryptostegia madagascariensis (Apocynaceae) | vine | 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 |
| Cynodon dactylon (Poaceae) | grass | No | |
| Cyperus rotundus (Cyperaceae) | Chlorocyperus rotundus (L.) Palla; Cyperus purpuro-variegatus Boeckeler; Cyperus stoloniferum pallidus Boeckeler; Cyperus tetrastachyos Desf.; Cyperus tuberosus Roxb | sedge | No |
| Dieffenbachia seguine (Araceae) | Arum seguine Jacq.; Dieffenbachia maculata (Lodd.) G. Don; Dieffenbachia picta Schott | herb | No |
| Digitaria ciliaris (Poaceae) | Digitaria adscendens (Kunth) Henrard | grass | No |
| Eleusine indica (Poaceae) | grass | No | |
| Eleutheranthera ruderalis (Asteraceae) | herb | No | |
| Eragrostis amabilis (Poaceae) | Eragrostis tenella (L.) P. Beauv. ex Roem. & Schult. | grass | No |
| Euphorbia cyathophora (Euphorbiaceae) | herb | No | |
| Euphorbia tirucalli (Euphorbiaceae) | tree | No | |
| Ficus carica (Moraceae) | tree | No | |
| Gloriosa superba (Colchicaceae) | herb | No | |
| Gomphrena globosa (Amaranthaceae) | herb | No | |
| Hoya australis (Apocynaceae) | Hoya dalrympliana F. Muell. | vine | No |
| Ipomoea violacea (Convolvulaceae) | Convolvulus tuba Schlechtend.; Ipomoea macrantha Roem. & Schult.; Ipomoea tuba (Schlechtend.) G. Don | vine | No |
| Kyllinga nemoralis (Cyperaceae) | Cyperus kyllingia Endl.; Kyllinga cephalotes (Jacq.) Druce; Kyllinga monocephala Rottb. | sedge | No |
| Mangifera indica (Anacardiaceae) | tree | No | |
| Muntingia calabura (Muntinginaceae) | tree | No | |
| Nerium oleander (Apocynaceae) | Nerium indicum Mill. | shrub | No |
| Ocimum basilicum (Lamiaceae) | herb | No | |
| Pedilanthus tithymaloides (Euphorbiaceae) | Euphorbia tithymaloides L. | herb | No |
| Pentas lanceolata (Rubiaceae) | Mussaenda luteola Delile; Ophiorrhiza lanceolata Forssk. | herb | No |
| Phyllanthus amarus (Phyllanthaceae) | Phyllanthus niruri sensu various Pacific botanists. | herb | No |
| Pluchea carolinensis (Asteraceae) | Conyza carolinensis Jacq.; Pluchea symphytifolia auct. | shrub | No |
| Pluchea indica (Asteraceae) | shrub | No | |
| Pseuderanthemum carruthersii (Acanthaceae) | Pseuderanthemum atropurpureum (W. Bull) Radlk.; Pseuderanthemum reticulatum Radlk. | shrub | No |
| Psidium guajava (Myrtaceae) | tree | No | |
| Sansevieria trifasciata (Asparagaceae) | herb | No | |
| Sida rhombifolia (Malvaceae) | Sida microphylla Cav. | shrub | No |
| Solanum lycopersicum (Solanaceae) | Lycopersicon esculentum Mill.; Lycopersicon lycopersicum (L.) Karst. | herb | No |
| Spermacoce remota (Rubiaceae) | Borreria laevis sensu various authors.; Spermacoce assurgens Ruiz & Pav. | herb | No |
| Sporobolus indicus (Poaceae) | Agrostis indica L.; Axonopus poiretii Roem. & Schult.; Sporobolus fertilis (Steud.) Clayton [= Sporobolus indicus var. major]; Sporobolus poiretii (Roem. & Schult.) Hitchc. | grass | No |
| Syngonium angustatum (Araceae) | vine | No | |
| Tagetes patula (Asteraceae) | Tagetes lunulata Ortega | herb | No |
| Talinum paniculatum (Portulacaceae) | Portulaca paniculatum Jacq. | herb | No |
| Tribulus cistoides (Zygophyllaceae) | herb | No |