are extinct (individuals have not been seen and habitat has been lost); those without are "possibly extinct" (individuals have not been seen but habitat still exists).
Plants -- 97 total taxa (55 extinct; 42 possibly extinct)
This list was originally (1997) compiled with the assistance of the Center for Plant Conservation -- Hawaii and presents the most up-to-date information for each species listed.Those listed with a are extinct (individuals have not been seen and habitat has been lost); those without are "possibly extinct" (individuals have not been seen but habitat still exists).
| Scientific name | Common name | Individuals left | |
| Achyranthes atollensis | 0 | ||
| Argyroxiphium virescens | Greensword | ?1 | |
| Botrychium subbifoliatum | 0 | |
| Carex wahuensis ssp. herbstii | ?0 | ||
| Cenchrus agrimonioides var. laysanensis | 0 | ||
| Chamaesyce celastroides var. tomentella | `Akoko | 0 |
| Chamaesyce remyi var. hanaleiensis | `Akoko | 0 | |
| Cleome spinosa ssp. nov. | Honohino | 0 |
| Clermontia grandiflora ssp. maxima | `Oha wai | 0 | |
| Clermontia multiflora | `Oha wai | 0 |
| Clermontia peleana ssp. singulifolia | `Oha wai | 0 | |
| Cyanea arborea | Haha | 0 | |
| Cyanea comata | Haha | 0 |
| Cyanea copelandii ssp. copelandii | Haha | 0 | |
| Cyanea cylindrocalyx | Haha | 0 |
| Cyanea dolichopoda | Haha | ?0 | |
| Cyanea giffardii | Haha | 0 |
| Cyanea linearifolia | Haha | 0 | |
| Cyanea lobata | Haha | 0 | |
| Cyanea longissima | Haha | 0 |
| Cyanea parvifolia | Haha | 0 | |
| Cyanea pohaku | Haha | 0 |
| Cyanea profuga | Haha | 0 |
| Cyanea purpurellifolia | Haha | 0 | |
| Cyanea pycnocarpa | Haha | 0 | |
| Cyanea quercifolia | Haha | 0 | |
| Cyanea superba ssp. regina | Haha | 0 | |
| Cyanea truncata | Haha | 0 | |
| Cyrtandra crenata | Ha`iwale | 0 | |
| Cyrtandra gracilis | Ha`iwale | 0 | |
| Cyrtandra kohalae | Ha`iwale | 0 | |
| Cyrtandra olona | 0 | ||
| Cyrtandra pruinosa | Ha`iwale | 0 |
| Cyrtandra rivularis | Ha`iwale | 0 | |
| Cyrtandra waiolani | Ha`iwale | 0 | |
| Delissea fallax | 0 | |
| Delissea laciniata | 0 | |
| Delissea lanaiensis | 0 | |
| Delissea lauliiana | 0 | |
| Delissea parviflora | 0 | |
| Delissea sinuata | 0 | |
| Delissea undulata ssp. kauaiensis | 0 | |
| Delissea undulata ssp. niihauensis | 0 | |
| Deparia kaalaana | 0 | |
| Diellia leucostegioides | 0 | |
| Diellia mannii | 0 | ||
| Eragrostris fosbergii | 0 | ||
| Eragrostis hosakai | 0 | |
| Eragrostis mauiensis | 0 | |
| Haplostachys bryanii | 0 | |
| Haplostachys linearifolia | 0 | |
| Haplostachys munroi | 0 | |
| Haplostachys truncata | 0 | |
| Hedyotis foliosa | 0 | ||
| Hibiscadelphus bombycinus | 0 | |
| Hibiscadelphus crucibracteatus | 0 | |
| Hibiscadelphus wilderianus | 0 | |
| Kokia lanceolata | 0 | |
| Lepidium bidentatum var. remyi | 0 | |
| Lipochaeta bryanii | Nehe | 0 |
| Lipochaeta degeneri | Nehe | 0 | |
| Lipochaeta ovata | Nehe | 0 |
| Lipochaeta perdita | Nehe | 0 |
| Lobelia dunbarii ssp. dunbarii | 0 | |
| Lobelia remyi | 0 | ||
| Lysimachia forbesii | 0 | ||
| Mariscus kunthianus | 0 | |
| Mariscus rockii | 0 | |
| Melicope nealae | Alani | 0 | |
| Melicope obovata | Alani | 0 |
| Melicope wailauensis | Alani | 0 | |
| Ochrosia kilaueaensis | Holei | 0 | |
| Peperomia degeneri | 0 | ||
| Phyllostegia hillebrandii | 0 | |
| Phyllostegia parviflora var. glabriuscula | 0 | ||
| Phyllostegia rockii | 0 | |
| Phyllostegia variabilis | 0 | |
| Phyllostegia waimeae | 0 | ||
| Sanicula kauaiensis | 0 | ||
| Scaevola hobdyi | 0 | ||
| Schiedea amplexicaulis | 0 | ||
| Schiedea implexa | 0 | ||
| Sicyos hillebrandii | `Anunu | 0 |
| Silene cryptopetala | 0 | |
| Silene degeneri | 0 | |
| Silene perlmanii | ?0 | ||
| Stenogyne cinerea | 0 | |
| Stenogyne haliakalae | 0 | ||
| Stenogyne kanehoana | 0 | ||
| Stenogyne oxygona | 0 | ||
| Stenogyne viridis | 0 | |
| Tetramolopium arenarium ssp. laxum | 0 | |
| Tetramolopium consanguineum ssp. consanguineum | 0 | |
| Tetramolopium conyzoides | 0 | |
| Tetramolopium lepidotum ssp. arbusculum | 0 | |
| Tetramolopium tenerrimum | 0 | |
| Wikstroemia hanalei | `Akia | 0 |
This page last revised 24 January 1999 by nle