PEP Species List, as of July 29, 2019.

There are currently 240 PEP species, meaning, they have 50 or fewer remaining of the species/taxon. This alphabetical list also provides island distributions and island-specific PEP Designations. Definitions for each of the designations are provided at the end of this table. This version of the PEP Species List adds the recently discovered taxon, sp. nov. (Maui), and Trematolobelia rockii, an endemic species on Moloka`i, where a reassessment of the species determined there are fewer than 50 wild individuals that remain.

Taxon Distribution Island-Specific Designation 1 Abutilon eremitopetalum Lana`i PEP 2 Acaena exigua Kaua`i PEP-EXTIRPATED Acaena exigua Maui PEP-EXTIRPATED? 3 Adenophorus periens Lana`i PEP-EXTIRPATED Adenophorus periens Hawai`i PEP Adenophorus periens Maui PEP-EXTIRPATED Adenophorus periens O`ahu PEP-EXTIRPATED Adenophorus periens Moloka`i PEP-EXTIRPATED Adenophorus periens Kaua`i PEP 4 Alectryon macrococcus var. Maui PEP auwahiensis 5 Argyroxiphium sandwicense subsp. Hawai`i PEP sandwicense 6 Argyroxiphium virescens Maui PEP-EXTINCT? 7 dielerectum Hawai`i PEP Asplenium dielerectum Lana`i PEP-EXTIRPATED Asplenium dielerectum Maui PEP Asplenium dielerectum Moloka`i PEP-EXTIRPATED Asplenium dielerectum O`ahu PEP 8 Asplenium diellaciniatum Kaua`i PEP 9 Asplenium dielmannii Kaua`i PEP 10 Asplenium dielpallidum Kaua`i PEP 11 Astelia waialealae Kaua`i PEP 12 Brighamia insignis Ni`ihau PEP-EXTIRPATED? Brighamia insignis Kaua`i PEP 13 Brighamia rockii Moloka`i PEP Brighamia rockii Lana`i PEP-EXTIRPATED Brighamia rockii Maui PEP-EXTIRPATED 14 Canavalia pubescens Lana`i PEP-EXTIRPATED? Canavalia pubescens Ni`hau PEP-EXTIRPATED? Canavalia pubescens Kaua`i PEP-EXTIRPATED? Canavalia pubescens Maui PEP 15 Clermontia oblongifolia subsp. Moloka`i PEP brevipes 16 Clermontia peleana subsp. peleana Hawai`i PEP 1

17 Clermontia peleana subsp. Maui PEP-EXTIRPATED singuliflora Clermontia peleana subsp. Hawai`i PEP singuliflora 18 Clermontia pyrularia Hawai`i PEP 19 Clermontia samuelii subsp. samuelii Maui PEP 20 kawaikiniensis Kaua`i PEP 21 Cryptocarya oahuensis O`ahu PEP 22 Cyanea cf. fernaldii Hawai`i PEP 23 Cyanea copelandii subsp. copelandii Hawai`i PEP-EXTINCT? 24 Cyanea crispa O`ahu PEP 25 Cyanea dolichopoda Kaua`i PEP-EXTINCT? 26 Cyanea dunbariae Moloka`i PEP 27 Cyanea eleeleensis Kaua`i PEP-EXTINCT? 28 Cyanea gibsonii Lana`i PEP 29 Cyanea grimesiana subsp. Moloka`i PEP-EXTIRPATED grimesiana Cyanea grimesiana subsp. O`ahu PEP-Extinct in Wild grimesiana 30 Cyanea grimesiana subsp. obatae O`ahu PEP 31 Cyanea hamatiflora subsp. carlsonii Hawai`i PEP 32 Cyanea kauaulaensis Maui PEP 33 Cyanea kolekoleensis Kaua`i PEP-EXTINCT? 34 Cyanea konahuanuiensis O`ahu PEP 35 Cyanea kuhihewa Kaua`i PEP 36 Cyanea lobata subsp. baldwinii Lana`i PEP 37 Cyanea lobata subsp. lobata Maui PEP 38 Cyanea magnicalyx Maui PEP 39 Cyanea maritae Maui PEP 40 Cyanea marksii Hawai`i PEP 41 Cyanea munroi Lana`i PEP Cyanea munroi Moloka`i PEP-EXTIRPATED? 42 Cyanea obtusa Maui PEP 43 Cyanea pinnatifida O`ahu PEP-Extinct in wild 44 Cyanea platyphylla Hawai`i PEP 45 Cyanea procera Moloka`i PEP 46 Cyanea profuga Moloka`i PEP 47 Cyanea purpurellifolia O`ahu PEP 48 Cyanea pycnocarpa Hawai`i PEP-EXTINCT? 49 Cyanea remyi Kaua`i PEP 50 Cyanea rivularis Kaua`i PEP 51 Cyanea shipmanii Hawai`i PEP 52 Cyanea solanacea Moloka`i PEP 53 Cyanea sp. nov. (Maui) Maui PEP 54 Cyanea st.-johnii O`ahu PEP 55 Cyanea stictophylla Hawai`i PEP 56 Cyanea superba subsp. superba O`ahu PEP-Extinct in wild 57 Cyanea truncata O`ahu PEP 2

58 Cyanea undulata Kaua`i PEP 59 Cyperus neokunthianus Maui PEP-EXTINCT? 60 ferripilosa Maui PEP 61 Cyrtandra filipes Maui PEP Cyrtandra filipes Moloka`i PEP-EXTIRPATED? 62 Cyrtandra gracilis O`ahu PEP 63 Cyrtandra hematos Moloka`i PEP 64 Cyrtandra kaulantha O`ahu PEP 65 Cyrtandra paliku Kaua`i PEP 66 Cyrtandra polyantha O`ahu PEP 67 Cyrtandra viridiflora O`ahu PEP 68 Cyrtandra wagneri Hawai`i PEP 69 Cyrtandra waiolani O`ahu PEP 70 Delissea argutidentata Hawai`i PEP-Extinct in wild 71 Delissea kauaiensis Kaua`i PEP 72 Delissea rhytidosperma Kaua`i PEP-Extinct in wild 73 Delissea waianaeensis O`ahu PEP 74 Deparia kaalaana Maui PEP Deparia kaalaana Kaua`i PEP-EXTIRPATED Deparia kaalaana Hawai`i PEP-EXTIRPATED 75 molokaiense Lana`i PEP-EXTIRPATED Diplazium molokaiense Moloka`i PEP-EXTIRPATED Diplazium molokaiense Maui PEP Diplazium molokaiense Kaua`i PEP-EXTIRPATED Diplazium molokaiense O`ahu PEP-EXTIRPATED? 76 Dryopteris crinalis var. podosorus Kaua`i PEP 77 kalalauensis Kaua`i PEP 78 Dubautia kenwoodii Kaua`i PEP-EXTINCT? 79 Dubautia pauciflorula Kaua`i PEP 80 Dubautia plantaginea subsp. Maui PEP humilis 81 Eragrostis fosbergii O`ahu PEP-EXTINCT? 82 Euphorbia eleanoriae Kaua`i PEP 83 Euphorbia herbstii O`ahu PEP 84 Euphorbia remyi var. hanaleiensis Kaua`i PEP-EXTINCT? 85 Flueggea neowawraea Moloka`i PEP-EXTIRPATED Flueggea neowawraea Hawai`i PEP Flueggea neowawraea Maui PEP Flueggea neowawraea O`ahu PEP Flueggea neowawraea Kaua`i PEP 86 Gardenia brighamii Moloka`i PEP-Extirpated in Wild Gardenia brighamii Hawai`i PEP-EXTIRPATED Gardenia brighamii Lana`i PEP Gardenia brighamii O`ahu PEP Gardenia brighamii Maui PEP-EXTIRPATED 87 Geranium arboreum Maui PEP 88 O`ahu PEP

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Gouania meyenii Kaua`i PEP 89 Gouania vitifolia O`ahu PEP Gouania vitifolia Hawai`i PEP Gouania vitifolia Maui PEP-EXTIRPATED 90 Hesperomannia oahuensis O`ahu PEP 91 Hibiscadelphus distans Kaua`i PEP 92 Hibiscadelphus giffardianus Hawai`i PEP-Extinct in Wild 93 Hibiscadelphus hualalaiensis Hawai`i PEP-Extinct in Wild 94 Hibiscadelphus stellatus Maui PEP 95 Hibiscadelphus woodii Kaua`i PEP-EXTINCT? 96 Hibiscus brackenridgei subsp. Moloka`i PEP-EXTIRPATED brackenridgei Hibiscus brackenridgei subsp. Maui PEP brackenridgei Hibiscus brackenridgei subsp. Hawai`i PEP brackenridgei Hibiscus brackenridgei subsp. Lana`i PEP brackenridgei 97 Huperzia nutans O`ahu PEP Huperzia nutans Kaua`i PEP-EXTIRPATED? 98 Huperzia stemmermanniae Maui PEP-EXTIRPATED? Huperzia stemmermanniae Hawai`i PEP 99 Isodendrion pyrifolium Maui PEP-EXTIRPATED Isodendrion pyrifolium Lana`i PEP-EXTIRPATED Isodendrion pyrifolium Moloka`i PEP-EXTIRPATED Isodendrion pyrifolium O`ahu PEP-EXTIRPATED Isodendrion pyrifolium Ni`ihau PEP Isodendrion pyrifolium Hawai`i PEP 100 Kadua cordata subsp. remyi Lana`i PEP 101 Kadua degeneri var. coprosmifolia O`ahu PEP-EXTINCT? 102 Kadua haupuensis Kaua`i PEP-Extinct in wild 103 Kadua laxiflora Lana`i PEP-Extirpated in Wild Kadua laxiflora Moloka`i PEP-EXTIRPATED? Kadua laxiflora Maui PEP-EXTIRPATED? 104 Kadua st.-johnii Kaua`i PEP 105 Kanaloa kahoolawensis Kaho`olawe PEP-Extinct in wild 106 Kokia cookei Moloka`i PEP-Extinct in wild 107 Kokia drynarioides Hawai`i PEP 108 Kokia kauaiensis Kaua`i PEP 109 Labordia cyrtandrae O`ahu PEP 110 Labordia lorenciana Kaua`i PEP 111 Labordia lydgatei Kaua`i PEP 112 Labordia tinifolia var. lanaiensis Lana`i PEP 113 Labordia tinifolia var. wahiawaensis Kaua`i PEP 114 Labordia triflora Moloka`i PEP 115 Lepidium orbiculare Kaua`i PEP 116 kamolensis Maui PEP 117 Lipochaeta micrantha subsp. Kaua`i PEP 4

micrantha 118 Lipochaeta populifolia Lana`i PEP-EXTINCT? 119 Lipochaeta waimeaensis Kaua`i PEP 120 Lobelia dunbariae subsp. dunbariae Moloka`i PEP-EXTINCT? 121 Lobelia monostachya O`ahu PEP 122 Lobelia oahuensis O`ahu PEP 123 Lysimachia iniki Kaua`i PEP 124 Lysimachia lydgatei Maui PEP 125 Lysimachia maxima Moloka`i PEP 126 Lysimachia ovoidea Kaua`i PEP 127 Lysimachia pendens Kaua`i PEP 128 Lysimachia scopulensis Kaua`i PEP 129 Lysimachia sp. nov. (Pohakea, Kaua`i PEP Kauai) 130 Lysimachia sp. nov. (Wainiha, Kaua`i PEP Kauai) 131 Lysimachia venosa Kaua`i PEP 132 Melicope adscendens Maui PEP 133 Melicope cornuta var. cornuta O`ahu PEP 134 Melicope degeneri Kaua`i PEP 135 Melicope haupuensis Kaua`i PEP 136 Melicope hiiakae O`ahu PEP 137 Melicope knudsenii Kaua`i PEP Melicope knudsenii Maui PEP 138 Melicope lydgatei O`ahu PEP 139 Melicope mucronulata Moloka`i PEP Melicope mucronulata Maui PEP-EXTIRPATED 140 Melicope opperheimeri Maui PEP 141 Melicope quadrangularis Kaua`i PEP 142 Melicope remyi Hawai`i PEP 143 Melicope stonei Kaua`i PEP 144 Melicope wailauensis Moloka`i PEP-EXTINCT? 145 Melicope zahlbruckneri Hawai`i PEP 146 Mezoneuron kavaiense Kaua`i PEP Mezoneuron kavaiense O`ahu PEP Mezoneuron kavaiense Maui PEP-EXTIRPATED Mezoneuron kavaiense Lana`i PEP-EXTIRPATED Mezoneuron kavaiense Hawai`i PEP 147 Myrsine knudsenii Kaua`i PEP 148 Myrsine mezii Kaua`i PEP 149 Myrsine sp. nov. (Kauai) Kaua`i PEP 150 Neraudia angulata var. dentata O`ahu PEP 151 Neraudia ovata Hawai`i PEP 152 Neraudia sericea Kaho`olawe PEP-EXTIRPATED Neraudia sericea Moloka`i PEP Neraudia sericea Maui PEP Neraudia sericea Lana`i PEP-EXTIRPATED

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153 Nothocestrum peltatum Kaua`i PEP Panicum niihauense Ni`ihau PEP-EXTIRPATED 154 Panicum niihauense Kaua`i PEP 155 Peperomia degeneri Moloka`i PEP-EXTINCT? 156 Peperomia subpetiolata Maui PEP 157 Phyllostegia bracteata Maui PEP 158 Phyllostegia brevidens Maui PEP Phyllostegia brevidens Hawai`i PEP 159 Phyllostegia electra Kaua`i PEP 160 Phyllostegia floribunda Hawai`i PEP 161 Phyllostegia haliakalae Maui PEP Phyllostegia haliakalae Lana`i PEP-EXTIRPATED Phyllostegia haliakalae Moloka`i PEP-EXTIRPATED 162 Phyllostegia helleri Kaua`i PEP-Extinct in Wild 163 Phyllostegia hirsuta O`ahu PEP 164 Phyllostegia hispida Moloka`i PEP 165 Phyllostegia kaalaensis O`ahu PEP-Extinct in Wild 166 Phyllostegia knudsenii Kaua`i PEP-EXTINCT? 167 Phyllostegia mannii Maui PEP-EXTIRPATED Phyllostegia mannii Moloka`i PEP 168 Phyllostegia mollis O`ahu PEP 169 Phyllostegia parviflora var. Hawai`i PEP glabriuscula 170 Phyllostegia parviflora var. lydgatei O`ahu PEP-Extinct in Wild 171 Phyllostegia parviflora var. O`ahu PEP parviflora Phyllostegia parviflora var. Maui PEP-EXTIRPATED parviflora 172 Phyllostegia pilosa Maui PEP Phyllostegia pilosa Moloka`i PEP-EXTIRPATED 173 Phyllostegia racemosa Hawai`i PEP 174 Phyllostegia stachyoides Maui PEP Phyllostegia stachyoides Hawai`i PEP Phyllostegia stachyoides Moloka`i PEP 175 Phyllostegia waimeae Kaua`i PEP 176 Phyllostegia warshaueri Hawai`i PEP 177 Phyllostegia wawrana Kaua`i PEP 178 Pittosporum halophilum Moloka`i PEP 179 Plantago hawaiensis Hawai`i PEP 180 Plantago princeps var. anomala O`ahu N/A Plantago princeps var. anomala Kaua`i PEP 181 Plantago princeps var. laxifolia Hawai`i PEP-EXITRPATED? Plantago princeps var. laxifolia Maui PEP Plantago princeps var. laxifolia Moloka`i PEP-EXTIRPATED? 182 Platanthera holochila Moloka`i PEP Platanthera holochila Maui PEP Platanthera holochila O`ahu PEP-EXTIRPATED Platanthera holochila Kaua`i PEP 6

183 Polyscias bisattenuata Kaua`i PEP 184 Polyscias flynnii Kaua`i PEP 185 Polyscias lydgatei O`ahu PEP 186 Pritchardia bakeri O`ahu PEP 187 Pritchardia gordonii Hawai`i PEP 188 Pritchardia kahukuensis O`ahu PEP 189 Pritchardia maideniana Hawai`i PEP 190 Pritchardia munroi Moloka`i PEP 191 Pritchardia schattaueri Hawai`i PEP 192 Pritchardia viscosa Kaua`i PEP 193 Psychotria grandiflora Kaua`i PEP 194 Psychotria hexandra var. oahuensis O`ahu PEP 195 Pteris lidgatei Moloka`i PEP Pteris lidgatei Maui PEP Pteris lidgatei O`ahu PEP 196 Ranunculus hawaiensis Hawai`i PEP Ranunculus hawaiensis Maui PEP 197 Remya montgomeryi Kaua`i PEP-Extinct in Wild 198 Scaevola coriacea Ni`ihau PEP-EXTIRPATED Scaevola coriacea Kaua`i PEP-EXTIRPATED Scaevola coriacea O`ahu PEP-EXTIRPATED Scaevola coriacea Moloka`i Offshore Islets PEP Scaevola coriacea Lana`i PEP-EXTIRPATED Scaevola coriacea Maui PEP Scaevola coriacea Hawai`i PEP-EXTIRPATED 199 Scaevola hobdyi Maui PEP-EXTINCT? 200 adamantis O`ahu PEP 201 Schiedea attenuata Kaua`i PEP 202 Schiedea diffusa subsp. macraei Hawai`i PEP 203 Schiedea haleakalensis Maui PEP 204 Schiedea hawaiiensis Hawai`i PEP 205 Schiedea jacobii Maui PEP-Extinct in Wild 206 Schiedea kaalae O`ahu PEP 207 Schiedea kauaiensis Kaua`i PEP 208 Schiedea laui Moloka`i PEP 209 Schiedea membranacea Kaua`i PEP 210 Schiedea nuttalii O`ahu PEP Schiedea nuttalii Maui PEP-EXTIRPATED Schiedea nuttalii Moloka`i PEP-EXTIRPATED 211 Schiedea obovata O`ahu PEP 212 Schiedea perlmanii Kaua`i PEP 213 Sicyos albus Hawai`i PEP 214 Sicyos hillebrandii Maui PEP 215 Sicyos lanceoloideus O`ahu PEP Sicyos lanceoloideus Kaua`i PEP 216 Sicyos macrophyllus Hawai`i PEP 217 Silene alexandri Moloka`i PEP

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218 Silene perlmanii O`ahu PEP-Extinct in Wild 219 Solanum sandwicense O`ahu PEP-Extirpated in Wild Solanum sandwicense Kaua`i PEP 220 Stenogyne bifida Moloka`i PEP 221 Stenogyne campanulata Kaua`i PEP 222 Stenogyne cranwelliae Hawai`i PEP 223 Stenogyne kaalae subsp. sherffii O`ahu PEP-Extinct in Wild 224 Stenogyne kanehoana O`ahu PEP 225 Stenogyne kauaulaensis Maui PEP 226 Stenogyne kealiae Kaua`i PEP 227 Trematolobelia rockii Moloka`i PEP 228 Tetramolopium capillare Maui PEP-EXTINCT? 229 Tetramolopium lepidotum subsp. Lana`i PEP-EXTIRPATED lepidotum Tetramolopium lepidotum subsp. O`ahu PEP lepidotum 230 Tetramolopium remyi Lana`i PEP Tetramolopium remyi Maui PEP-EXTIRPATED 231 Urera kaalae O`ahu PEP 232 Vicia menziesii Hawai`i PEP 233 Viola helenae Kaua`i PEP 234 Viola kauaensis var. hosakae O`ahu PEP 235 Viola kauaensis var. wahiawaensis Kaua`i PEP 236 Wikstroemia skottsbergiana Kaua`i PEP 237 Wikstroemia villosa Maui PEP 238 Xylosma crenatum Kaua`i PEP 239 Zanthoxylum dipetalum var. Hawai`i PEP tomentosum 240 Zanthoxylum oahuense O`ahu PEP Designation Definitions PEP = Prevention = Taxon has fewer than 50 individuals in the wild PEP-Extinct in wild = Wild founders extinct, outplanted progeny exists that serve as founders; taxon has fewer than 50 individuals in the wild. PEP-Extirpated in wild = wild founders extirpated on the island, outplanted progeny exists that serve as founders; taxon has fewer than 50 individuals in the wild. PEP-EXTINCT? = (Possibly extinct) Taxon not seen for over 20 years, remains, some hope of discovery remains (refers to entire species) POP = POtentially PEP = Taxon has more than 50 but extremely vulnerable ROI = Rare On Island = Taxon that occurs on other islands but is rare on a particular island (<50) EXTIRPATED? = (Possibly extirpated) Taxon not seen for over 20 years; habitat remains, some hope of discovery remains (refers to island-level extirpations) EXTIRPATED = Not located despite extensive searches, very little hope of discovery remains (refers to island-level extirpations) EXTINCT = Not located despite extensive searches, very little hope of discovery remains AS = Apparently Secure TBD = To be determined.

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