Plant Threats to Pacific Ecosystems

PIER species listed by scientific name beginning with the letter G

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 G.  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?
Gaillardia pulchella   (Asteraceae)   herb Yes No
Galactia tenuiflora   (Fabaceae) Glycine tenuiflora Klein ex Willd. vine Yes No
Galega officinalis   (Fabaceae) Galega bicolor Boiss. & Hausskn. ex Regel; Galega patula Steven herb Yes No
Galinsoga parviflora   (Asteraceae)   herb Yes No
Galinsoga quadriradiata   (Asteraceae) Galinsoga ciliata (Raf.) S. F. Blake herb Yes No
Galium aparine   (Rubiaceae)   herb Yes No
Gamochaeta americana   (Asteraceae) Gnaphalium americanum Mill. herb Yes No
Gamochaeta pensylvanica   (Asteraceae) Gnaphalium pensylvanicum Willd. herb Yes No
Gamochaeta purpurea   (Asteraceae) Gnaphalium purpureum L. herb Yes No
Gamochaeta stachydifolia   (Asteraceae) Gnaphalium stachydifolium Lam. herb Yes No
Garcinia xanthochymus   (Clusiaceae) Garcinia tinctoria (DC.) W. Wight, orth. var. tree Yes No
Gastridium phleoides   (Poaceae) Lachnagrostis phleoides Nees & Meyen grass Yes Yes
Gazania rigens var. leucolaena   (Asteraceae) Gazania leucolaena DC. herb Yes No
Genista monspessulana   (Fabaceae) Cytisus monspessulanus L.; Teline monspessulana (L.) K. Koch shrub Yes No
Geonoma interrupta   (Arecaceae) Geonoma binervia Oerst.; Geonoma euspatha Burret; Geonoma martinicensis Mart.; Geonoma oxycarpa Mart. tree No No
Geranium pusillum   (Geraniaceae)   herb Yes No
Gliricidia sepium   (Fabaceae) Gliricidia maculata (Kunth) Kunth ex Walp. tree Yes No
Gloriosa superba   (Colchicaceae) Gloriosa abyssinica A. Rich.; Gloriosa simplex auct.; Gloriosa speciosa (Hochst.) Engl.; Gloriosa virescens Lindl. herb Yes No
Glycine tabacina   (Fabaceae) Glycine koidzumii Ohwi herb Yes No
Gmelina arborea   (Verbenaceae)   tree Yes No
Gmelina asiatica   (Verbenaceae)   shrub No No
Gmelina elliptica   (Verbenaceae)   shrub Yes No
Gnaphalium aldunateoides   (Asteraceae) Gnaphalium insulare Phil. herb Yes Yes
Gnaphalium cheiranthifolium   (Asteraceae)   herb Yes No
Gomphocarpus physocarpus   (Apocynaceae) Asclepias physocarpa (E. Mey.) Schlechter shrub Yes No
Gomphrena celosioides   (Amaranthaceae) Gomphrena alba Peter herb Yes No
Gomphrena globosa   (Amaranthaceae)   herb Yes No
Gomphrena serrata   (Amaranthaceae) Gomphrena decumbens Jacq. herb Yes No
Gossypium barbadense   (Malvaceae) Gossypium brasiliense Macfad.; Gossypium peruvianum Cav. shrub Yes No
Gossypium hirsutum   (Malvaceae) Gossypium punctatum Schumach.; Gossypium religiosum L.; Gossypium taitense Parl. shrub Yes No
Gouania polygama   (Rhamnaceae) Gouania tomentosa Jacq.; Rhamnus polygama Jacq. herb Yes No
Grevillea banksii   (Proteaceae)   tree Yes No
Grevillea robusta   (Proteaceae)   tree Yes No
Grevillea rosmarinifolia   (Proteaceae)   shrub No No
Grewia asiatica   (Malvaceae) Grewia subinaequalis DC.; Microcos lateriflora L. tree Yes No
Grewia micrantha   (Malvaceae)   shrub/tree Yes No
Guadua angustifolia   (Poaceae) Bambusa guadua Bonpl.; Guadua aculeata Rupr. ex E. Fourn. grass Yes No
Guaiacum sanctum   (Zygophyllaceae) Guaiacum guatemalense Planch. ex Rydb. shrub/tree Yes No
Gutierrezia sarothrae   (Asteraceae) Gutierrezia diversifolia Greene; Solidago sarothrae Pursh; Xanthocephalum sarothrae (Pursh) Shinners herb No No
Guzmania lindenii   (Bromeliaceae) Massangea lindenii André bromeliad No No
Gymnocoronis spilanthoides   (Asteraceae) Alomia spilanthoides D. Don ex Hook. & Arn.; Gymnocoronis attenuata DC. herb No No
Gymnosporia emarginata   (Celastraceae) Celastrus emarginata Willd.; Maytenus emarginata (Willd.) Ding Hou shrub Yes No

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