This table lists all species profiled on PIER with the genus beginning with the letter I. 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? |
| Ilex aquifolium (Aquifoliaceae) | tree | Yes | Yes | |
| Ilex cassine (Aquifoliaceae) | shrub/tree | Yes | No | |
| Ilex paraguariensis (Aquifoliaceae) | tree | Yes | No | |
| Ilex vomitoria (Aquifoliaceae) | shrub/tree | Yes | No | |
| Impatiens balsamina (Balsaminaceae) | herb | Yes | No | |
| Impatiens walleriana (Balsaminaceae) | herb | Yes | No | |
| Imperata conferta (Poaceae) | grass | Yes | No | |
| Imperata cylindrica (Poaceae) | Imperata arundinacea Cyr. | grass | Yes | No |
| Indigofera hendecaphylla (Fabaceae) | Indigofera endecaphylla Jacq. ex Poir., orth. var.; Indigofera neglecta N. E. Br.; Indigofera spicata auct., pro parte majore | herb | Yes | No |
| Indigofera hirsuta (Fabaceae) | shrub | Yes | No | |
| Indigofera linifolia (Fabaceae) | herb | Yes | No | |
| Indigofera spicata (Fabaceae) | herb | Yes | No | |
| Indigofera suffruticosa (Fabaceae) | shrub | Yes | No | |
| Inga edulis (Fabaceae) | tree | Yes | No | |
| Inga laurina (Fabaceae) | Inga fagifolia (L.) Willd. ex Benth.; Mimosa fagifolia L.; Mimosa laurina Sw. | tree | Yes | No |
| Inga spectabilis (Fabaceae) | Inga schimpfii Harms; Inga spectabilis var. schimpfii (Harms) Little; Mimosa spectabilis Vahl | tree | Yes | No |
| Ipomoea alba (Convolvulaceae) | vine | Yes | No | |
| Ipomoea aquatica (Convolvulaceae) | Ipomoea reptans sensu J. W. Parham in Dept. Agr. Fiji Bull. 35. | aquatic herb | Yes | No |
| Ipomoea batatas (Convolvulaceae) | vine | Yes | No | |
| Ipomoea cairica (Convolvulaceae) | Ipomoea tuberculata Roemer & Schultes | vine | Yes | No |
| Ipomoea carnea subsp. fistulosa (Convolvulaceae) | Ipomoea fistulosa Mart. ex Choisy | shrub | Yes | No |
| Ipomoea hederifolia (Convolvulaceae) | vine | Yes | No | |
| Ipomoea indica (Convolvulaceae) | Convolvulus indicus Burm.; Ipomoea acuminata (Vahl) Roem. & Schult.; Ipomoea cathartica Poir.; Ipomoea learii Paxton | vine | Yes | No |
| Ipomoea nil (Convolvulaceae) | Convolvulus nil L.; Pharbitis limbata Lindl.; Pharbitis nil (L.) Choisy | vine | Yes | No |
| Ipomoea obscura (Convolvulaceae) | vine | Yes | No | |
| Ipomoea ochracea (Convolvulaceae) | vine | Yes | No | |
| Ipomoea pes-tigridis (Convolvulaceae) | vine | No | No | |
| Ipomoea purpurea (Convolvulaceae) | Convolvulus purpureus L.; Ipomoea hirsutula J. Jacq.; Pharbitis purpurea (L.) Voigt | herb | Yes | No |
| Ipomoea quamoclit (Convolvulaceae) | Quamoclit pennata Bojer | vine | Yes | No |
| Ipomoea triloba (Convolvulaceae) | vine | Yes | No | |
| Ipomoea violacea (Convolvulaceae) | Convolvulus tuba Schlechtend.; Ipomoea macrantha Roem. & Schult.; Ipomoea tuba (Schlechtend.) G. Don | vine | Yes | No |
| Iris germanica (Iridaceae) | herb | Yes | No | |
| Isachne globosa (Poaceae) | grass | Yes | No | |
| Ischaemum indicum (Poaceae) | Ischaemum ciliare Retz. | grass | Yes | No |
| Ischaemum polystachyum (Poaceae) | Ischaemum digitatum var. polystachyum ((presl) Hackel | grass | Yes | No |
| Ischaemum rugosum (Poaceae) | grass | Yes | No | |
| Ischaemum timorense (Poaceae) | grass | Yes | No | |
| Ixora coccinea (Rubiaceae) | Ixora lutea Hutch. | shrub | Yes | No |
| Ixora pavetta (Rubiaceae) | Ixora arborea Roxb. ex Sm.; Ixora parviflora Vahl | tree | No | No |