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 hawkeri (Balsaminaceae) | Impatiens herzogii K. Schum.; Impatiens linearifolia Warb.; Impatiens schlechteri Warb. | herb | Yes | No |
| Impatiens walleriana (Balsaminaceae) | herb | Yes | No | |
| Imperata conferta (Poaceae) | Imperata exaltata auct.; Saccharum confertum J. Presl | grass | Yes | No |
| Imperata cylindrica (Poaceae) | Imperata arundinacea Cirillo | 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) | Indigofera anil L. | shrub | Yes | No |
| Inga edulis (Fabaceae) | Mimosa ynga Vell. | tree | Yes | No |
| Inga feuilleei (Fabaceae) | Inga edulis sensu auct.; Inga feuillei DC. [spelling variant] | 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) | Calonyction aculeatum (L.) House; Calonyction album (L.) House | vine | Yes | No |
| Ipomoea aquatica (Convolvulaceae) | Ipomoea reptans Poir. | aquatic herb | Yes | No |
| Ipomoea batatas (Convolvulaceae) | Convolvulus batatas L. | vine | Yes | No |
| Ipomoea cairica (Convolvulaceae) | Convolvulus cairicus L.; Ipomoea heptaphylla Voigt; Ipomoea palmata Forssk.; Ipomoea tuberculata (Desr.) Roem. & Schult. | vine | Yes | No |
| Ipomoea carnea subsp. fistulosa (Convolvulaceae) | Ipomoea crassicaulis (Benth.) B. L. Rob.; Ipomoea fistulosa Mart. ex Choisy | shrub | Yes | No |
| Ipomoea hederifolia (Convolvulaceae) | Ipomoea angulata Lam.; Ipomoea luteola Jacq.; Quamoclit hederifolia (L.) G. Don | vine | Yes | No |
| Ipomoea indica (Convolvulaceae) | Convolvulus indicus Burm.; Ipomoea acuminata (Vahl) Roem. & Schult.; Ipomoea cathartica Poir.; Ipomoea learii Paxton; Ipomoea versicolor Meisn. | vine | Yes | No |
| Ipomoea nil (Convolvulaceae) | Convolvulus nil L.; Pharbitis limbata Lindl.; Pharbitis nil (L.) Choisy | vine | Yes | No |
| Ipomoea obscura (Convolvulaceae) | Convolvulus obscurus L. | 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 ciliare (Poaceae) | Ischaemum aristatum auct.; Ischaemum indicum auct. | grass | Yes | No |
| Ischaemum polystachyum (Poaceae) | Ischaemum digitatum Brongn. | grass | Yes | No |
| Ischaemum rugosum (Poaceae) | grass | Yes | No | |
| Ischaemum timorense (Poaceae) | grass | Yes | No | |
| Ixora coccinea (Rubiaceae) | Ixora fraseri hort. ex Gentil; Ixora lutea Hutch. | shrub | Yes | No |
| Ixora pavetta (Rubiaceae) | Ixora arborea Roxb. ex Sm.; Ixora parviflora Vahl | tree | No | No |