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) | Galactia striata (Jacq.) Urb.; 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) | tree | Yes | No | |
| Gastridium phleoides (Poaceae) | Lachnagrostis phleoides Nees & Meyen | grass | Yes | Yes |
| Gazania rigens var. leucolaena (Asteraceae) | Gazania leucolaena A. P. de Candolle | 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) Walp. | tree | Yes | No |
| Gloriosa superba (Colchicaceae) | herb | Yes | No | |
| Glycine tabacina (Fabaceae) | 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) | herb | Yes | No | |
| Gomphrena globosa (Amaranthaceae) | herb | Yes | No | |
| Gomphrena serrata (Amaranthaceae) | herb | Yes | No | |
| Gossypium barbadense (Malvaceae) | Gossypium brasiliense sensu Okabe non Macf.; 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. | tree | No | 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) | bromeliad | No | No | |
| Gymnocoronis spilanthoides (Asteraceae) | herb | No | No | |
| Gymnosporia emarginata (Celastraceae) | Celastrus emarginata Willd.; Maytenus emarginata (Willd.) Ding Hou | shrub | Yes | No |