Plant Threats to Pacific Ecosystems

PIER species listed by scientific name beginning with the letter J

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

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This table lists all species profiled on PIER with the genus beginning with the letter J.  An alphabetical index to all PIER species is also available. Also, the complete alphabetical of all PIER species is available, but it is a large list and may take a while to load on systems with slower internet connections.  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.

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 Present on
Pacific Islands?
Primarily a threat
at high elevations?
Jacaranda mimosifolia   (Bignoniaceae) Jacaranda chelonia Griseb.; Jacaranda ovalifolia R. Br. tree Yes No
Jasminum dichotomum   (Oleaceae)   shrub Yes No
Jasminum fluminense   (Oleaceae)   vine Yes No
Jasminum polyanthum   (Oleaceae)   vine Yes No
Jasminum sambac   (Oleaceae) Nyctanthes sambac L.; Nyctanthes undulata L. vine Yes No
Jatropha curcas   (Euphorbiaceae)   shrub Yes No
Jatropha gossypiifolia   (Euphorbiaceae) Jatropha staphysagrifolia Mill. shrub Yes No
Jatropha multifida   (Euphorbiaceae)   shrub Yes No
Juglans neotropica   (Juglandaceae) Juglans columbiensis Dode; Juglans honorei Dode tree Yes No
Juncus acutus   (Juncaceae)   rush No No
Juncus bufonius   (Juncaceae)   rush Yes Yes
Juncus effusus   (Juncaceae)   rush Yes Yes
Juncus tenuis   (Juncaceae)   rush Yes No
Juniperus bermudiana   (Cupressaceae)   tree Yes No
Justicia aurea   (Acanthaceae) Justicia umbrosa Benth. herb Yes No
Justicia betonica   (Acanthaceae) Nicoteba betonica (L.) Lindau herb Yes No
Justicia carnea   (Acanthaceae) Jacobinia carnea (Lindl.) G. Nicholson; Jacobinia magnifica (Nees) Voss; Jacobinia velutina (Nees) Voss; Justicia magnifica Pohl ex Nees, nom. inval. shrub Yes No
Justicia gendarussa   (Acanthaceae) Gendarussa vulgaris Nees herb Yes No
Justicia pectoralis   (Acanthaceae)   herb No No
Justicia procumbens   (Acanthaceae)   herb Yes No
Justicia spicigera   (Acanthaceae)   shrub Yes No

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This page was last regenerated on 8JUL2017.