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Critically Endangered Plants
About this Page
A species is
critically endangered
when it is facing an extremely high risk of extinction in the wild in the immediate future.
Index by Species
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A
Abies beshanzuensis
Abies nebrodensis
(Sicilian Fir)
Abies yuanbaoshanensis
Abies ziyuanensis
Abronia ammophila
(Tweedy's Sand Verbena)
Abronia montecristoi
Abutilon eremitopetalum
(Hiddenpetal Indian Mallow)
Abutilon menziesii
(Ko'oloa 'ula)
Abutilon sandwicense
(Greenflower Indian Mallow)
Acacia anegadensis
(Blackbrush Wattle)
Acacia belairioides
Acacia mathuataensis
(Tatagia)
Acacia roigii
(Erizo)
Acaena exigua
(Liliwai)
Acalypha cuneata
Acalypha raivavensis
Acalypha schiedeana
Acanthomintha duttonii
(San Mateo Thorn Mint)
Acanthomintha obovata
cordata
(San Diego Thorn-Mint)
Acanthophoenix rubra
(Palmiste Piquant)
Acer buergerianum formosanum
(Taiwan Trident Maple)
Acer hainanense
Acer leipoense
Acer oblongum var. membranaceum
Achyranthes mutica
(Blunt Chaff Flower)
Achyranthes splendens
var.
rotundata
(Round Chaff Flower)
Achyrocline glandulosa
Achyrocline mollis
Acmopyle sahniana
Aconitum infectum
(Arizona Monkshood)
Actinodaphne cuspidata
Actinodaphne lanata
Adelobotrys panamensis
Adenophorus periens
(Pendant Kihi Fern)
Adenophyllum wrightii
(Wright's Dogweed)
Aegiphila glomerata
Aeschynomene pratensis
(Meadow Joint-Vetch)
Aetheolaena hypoleuca
Aetheolaena ledifolia
Aetheolaena pichinchensis
Afrothismia pachyantha
Afrothismia winkleri
Agalinis acuta
(Sandplain False Foxglove)
Agalinis calycina
(Leoncita False Foxglove)
Agalinis navasotensis
(Navasota False Foxglove)
Agave arizonica
(Arizona Century Plant)
Aglaia densitricha
Aglaia evansensis
Aglaia gracilis
Aglaia heterotricha
Aglaia mackiana
Aglaia malabarica
Aglaia pleuropteris
Aglaia unifolia
Agrostis hendersonii
(Henderson's Bentgrass)
Agrostis rossiae
(Mountain Bentgrass)
Agrostistachys hookeri
Albizia guillainii
Albizia vaughanii
Alchemilla fischeri
camerunensis
Alectryon macrococcus
(Hawai'i Alectryon)
Alectryon macrococcus
Radlk. var.
auwahiensis
G.Linney (Hawai'i Alectryon)
Alectryon macrococcus
Radlk. var.
macrococcus
Radlk. (Hawai'i Alectryon)
Alectryon macrococcus
var.
auwahiensis
Alectryon macrococcus
var.
macrococcus
Allium jepsonii
(Jepson's Onion)
Allium munzii
(Munz's Onion)
Allium passeyi
(Passey's Onion)
Allium shevockii
(Spanish Needle Onion)
Allophylus hispidus
Aloe helenae
Aloe pillansii
(Bastard Quiver Tree)
Aloe suzannae
Alphonsea kingii
Alsinidendron lychnoides
(Kuawawaenohu)
Alsinidendron obovatum
(Waianae Range Alsinidendron)
Alsinidendron trinerve
(Three Nerved Alsinidendron)
Alsinidendron viscosum
(Climbing Alsinidendron)
Amanoa anomala
Amaranthus brownii
(Brown's Amaranth)
Ambrosia pumila
(Dwarf Burr Ragweed)
Amentotaxus formosana
Amesiella monticola
Ammophila champlainensis
(Lake Champlain Beachgrass)
Amoreuxia gonzalezii
(Santa Rita Mountain Yellowshow)
Amphitecna spathicalyx
Amsinckia grandiflora
(Large Flowered Fiddleneck)
Amsinckia marginata
Amsonia kearneyana
(Kearney's Blue-Star)
Amsonia tharpii
(Feltleaf Bluestar)
Andropogon benthamianus
Angelica laurentiana
(St. Lawrence Angelica)
Aniba pedicellata
Anisoptera curtisii
Anisoptera megistocarpa
Anisoptera reticulata
Anisoptera scaphula
Anisoptera thurifera thurifera
Annona ecuadorensis
Annona hystricoides
Annona manabiensis
Anodendron rhinosporum
Antennaria rosea
rosea
(Charleston Mountain Pussytoes)
Anthonotha leptorrhachis
Anthurium coerulescens
Anthurium eggersii
Anthurium linguifolium
Anthurium tenuicaule
Aporusa fusiformis
Aquilaria crassna
(Agar Wood)
Aquilegia grahamii
(Graham's Columbine)
Arabis codyi
(Cody's Rockcress)
Arabis falcatoria
(Grouse Creek Rockcress)
Arabis falcifructa
(Elko Rockcress)
Arabis georgiana
(Georgia Rock-Cress)
Arabis hirshbergiae
(Cuyamaca Rockcress)
Arabis hoffmannii
(Hoffmann's Rock Cress)
Arabis ophira
(Ophir Pass Rockcress)
Arabis pusilla
(Fremont County Rockcress)
Arabis pygmaea
(Tulare County Rock Cress)
Arabis tiehmii
(Carson Range Rockcress)
Arabis tricornuta
(Rincon Mountain Rockcress)
Aralia rex
Araucaria angustifolia
(Brazilian Monkey Puzzle Tree)
Araucaria nemorosa
Arctomecon humilis
(Dwarf Bearclaw-Poppy)
Arctostaphylos confertiflora
(Santa Rosa Island Manzanita)
Arctostaphylos densiflora
(Vine Hill Manzanita)
Arctostaphylos gabrielensis
(San Gabriel Manzanita)
Arctostaphylos imbricata
(San Bruno Mountain Manzanita)
Arctostaphylos klamathensis
(Klamath Manzanita)
Arctostaphylos mendocinoensis
(Pygmy Manzanita)
Arctostaphylos osoensis
(Oso Manzanita)
Arctostaphylos pacifica
(Pacific Manzanita)
Arctostaphylos pallida
(Alameda Manzanita)
Ardisia byrsonimae
Ardisia etindensis
Ardisia oligantha
Ardisia schlechteri
Arenaria livermorensis
(Livermore Sandwort)
Arenaria paludicola
(Marsh Sandwort)
Arenaria radians
Argemone arizonica
(Arizona Prickle-Poppy)
Argyroxiphium grayanum
(Hana Forest Silversword)
Argyroxiphium kauense
(Mauna Loa Silversword)
Argyroxiphium sandwicense
sandwicense
(Mauna Kea Silversword)
Arida mattturneri
Ariocarpus bravoanus bravoanus
Aristolochia utriformis
Aristolochia westlandii
Arnoglossum album
(Bay County Indian-Plantain)
Artemisia aleutica
(Aleutian Wormwood)
Asclepias prostrata
(Prostrate Milkweed)
Asclepias welshii
(Welsh's Milkweed)
Ascoglossum calopterum
Asplenium densum
(Dense Spleenwort)
Asplenium haleakalense
(Haleakala Spleenwort)
Asplenium plenum
(Ruffled Spleenwort)
Asplenium rhomboideum
(Diamond Spleenwort)
Asplenium schizophyllum
(Fringed Spleenwort)
Asplundia clementinae
Asplundia lutea
Astelia waialealae
(Kauai Pa'iniu)
Aster quitensis
Asterogyne yaracuyense
Asteropeia amblyocarpa
Astragalus agnicidus
(Humboldt County Milkvetch)
Astragalus albens
(Cushenbury Milk-Vetch)
Astragalus ampullarioides
Astragalus anxius
(Troubled Milkvetch)
Astragalus applegatei
(Applegate's Milk-Vetch)
Astragalus bibullatus
(Limestone Glade Milkvetch)
Astragalus clarianus
(Clara Hunt's Milk-Vetch)
Astragalus cremnophylax
(Sentry Milk-Vetch)
Astragalus cremnophylax cremnophylax
var.
cremnophylax
(Sentry Milk-vetch)
Astragalus cremnophylax
var.
hevronii
(Hevron's Milkvetch)
Astragalus cremnophylax
var.
myriorrhaphis
(Sentry Milkvetch)
Astragalus desereticus
(Deseret Milkvetch)
Astragalus ertterae
(Walker Pass Milkvetch)
Astragalus hamiltonii
(Hamilton's Milkvetch)
Astragalus holmgreniorum
(Holmgren Milkvetch)
Astragalus humillimus
(Mancos Milk-Vetch)
Astragalus hypoxylus
(Huachuca Mountain Milkvetch)
Astragalus iselyi
(Isely's Milkvetch)
Astragalus jaegerianus
(Lane Mountain Milkvetch)
Astragalus loanus
(Glenwood Milkvetch)
Astragalus microcymbus
(Skiff Milkvetch)
Astragalus osterhoutii
(Osterhout Milk-Vetch)
Astragalus ravenii
(Raven's Milk-Vetch)
Astragalus riparius
(Woodyroot Milkvetch)
Astragalus sabulosus
(Cisco Milkvetch)
Astragalus schmolliae
(Schmoll's Milkvetch)
Astragalus sinuatus
(Whited's Milk-Vetch)
Astragalus tener
(Slender Milk-Vetch)
Astragalus tener titi
var.
titi
(Coastal Dunes Milkvetch)
Astragalus tener
var.
ferrisiae
(Ferris Milk Vetch)
Astragalus tener
var.
tener
(Alkali Milk Vetch)
Astragalus tortipes
(Sleeping Ute Milkvetch)
Astragalus tricarinatus
(Triple-Ribbed Milk-Vetch)
Astragalus webberi
(Webber's Milkvetch)
Astrocaryum minus
Astronidium floribundum
Astronidium inflatum
Astronidium kasiense
Astronidium lepidotum
Astronidium pallidiflorum
Astronidium saulae
Atriplex minuscula
(Lesser Saltscale)
Atriplex nudicaulis
(Baltic Saltbush)
Atriplex parishii
(Parish's Brittlescale)
Atriplex plebeja
Atriplex tularensis
(Bakersfield Saltbush)
Atriplex vallicola
(Lost Hills Saltbush)
Attalea crassispatha
(Corossie)
Aubregrinia taiensis
Auerodendron pauciflorum
(Turtlefat)
Autranella congolensis
B
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Baccharis aretioides
Baccharis fusca
Baccharis malibuensis
(Malibu Coyote Brush)
Baccharis vanessae
(Encinitas False Willow)
Bactris nancibensis
Badula crassa
Badula platyphylla
Badula reticulata
Balaka macrocarpa
Banara vanderbiltii
(Vanderbilt's Palo De Ramon)
Baptisia arachnifera
(Wooly Wild Indigo)
Barleria observatrix
Basiphyllaea corallicola
(Carter's Orchid)
Batesimalva violacea
(Purple Gay-Mallow)
Bauhinia seleriana
Bauhinia seminarioi
Bazzania bhutanica
Beccariophoenix madagascariensis
(Giant Windowpane Palm)
Begonia asympeltata
Begonia pelargoniiflora
Begonia salaziensis
(Begonia Sauvage)
Beilschmiedia penangiana
Beilschmiedia preussii
Belonophora ongensis
Berberis harrisoniana
(Harrison's Barberry)
Berberis nilghiriensis
Betula halophila
Betula lenta
(Virginia Round-Leaf Birch)
Betula murrayana
(Murray's Birch)
Bhesa nitidissima
Bhesa sinica
Bidens hendersonensis var. oenoensis
Bidens simplicifolia
Bidens wiebkei
(Wiebke's Beggarticks)
Blakea granatensis
Blennosperma bakeri
(Baker's Blennosperma)
Blephilia subnuda
(Cumberland Pagoda-Plant)
Bloomeria humilis
(Dwarf Goldenstar)
Bomarea angustifolia
Bomarea goniocaulon
Bomarea graminifolia
Bomarea hartwegii
Bomarea longipes
Bombax insigne var. polystemon
Bonamia menziesii
(Hawai'i Lady's Nightcap)
Bonamia ovalifolia
(Bigpod Lady's Nightcap)
Bonnetia ptariensis
Bostrychia bocagei
(Dwarf Olive Ibis)
Botrychium acuminatum
(Pointed Moonwort)
Botrychium gallicomontanum
(Frenchman's Bluff Grapefern)
Botrychium lineare
(Narrowleaf Grapefern)
Botrychium pseudopinnatum
(False Daisyleaf Moonwort)
Botrychium tunux
Bouteloua kayi
(Kay's Grama)
Brachystephanus kupeensis
Braya longii
(Long's Northern Rockcress)
Braya pilosa
(Hairy Rockcress)
Brighamia insignis
(Cabbage On a Stick)
Brighamia rockii
(Molokai Ohaha)
Brodiaea pallida
(Chinese Camp Brodiaea)
Browneopsis macrofoliolata
Brymela tutezona
Bryopteris gaudichaudii
Buchanania barberi
Buddleja formosana
Bulbophyllum filiforme
Bulbophyllum kupense
Burmeistera asplundii
Burmeistera rubrosepala
Buxus vahlii
(Vahl's Boxwood)
Byblis gigantea
(Rainbow Plant)
Byrsonima nemoralis dressleri
Byttneria minytricha
C
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Cadaba insularis
Calamagrostis cainii
(Cain's Reedgrass)
Calamagrostis perplexa
(Wood Reedgrass)
Calamus compsostachys
Calamus obovoideus
Calamus wailong
Calathea dodsonii
Calathea petersenii
Callicarpa ampla
(Cap rosa)
Calochortus coxii
(Cox's Mariposa Lily)
Calochortus persistens
(Siskiyou Mariposa Lily)
Calochortus raichei
(Cedars Mariposa Lily)
Calochortus syntrophus
Calochortus tiburonensis
(Tiburon Mariposa Lily)
Calochortus umpquaensis
(Umpqua Mariposa Lily)
Calochortus westonii
(Shirley Meadows Mariposa Lily)
Calodendrum eickii
Calophyllum acutiputamen
Calophyllum cuneifolium
Calycanthus brockiana
(Georgia Sweetshrub)
Calycorectes schottianus
Calyptranthes acutissima
Calyptranthes arenicola
Calyptranthes flavo-viridis
Calyptranthes kiaerskovii
(Kiaerskov's Lidflower)
Calyptranthes pozasiana
Calyptranthes uniflora
Calystegia stebbinsii
(Stebbins' False Bindweed)
Camissonia bairdii
(Baird's Evening-Primrose)
Camissonia benitensis
(San Benito Evening-Primrose)
Camissonia confertiflora
(Bunch Flower Evening Primrose)
Camissonia exilis
(Cottonwood Springs Suncup)
Camissonia gouldii
(Diamond Valley Suncup)
Camissonia hardhamiae
(Hardham's Evening-Primrose)
Campanula robinsiae
(Brooksville Bellflower)
Campanula sharsmithiae
(Sharsmith's Harebell)
Canarium whitei
Canavalia molokaiensis
(Molokai Jack-Bean)
Canavalia napaliensis
(Makaha Valley Jackbean)
Canavalia pubescens
(Lavafield Jackbean)
Capparis mirifica
Capparis panamensis
Captaincookia margaretae
Cardamine micranthera
(Small Anthered-Bittercress)
Carex albida
(White Sedge)
Carex brysonii
(Bryson's Sedge)
Carex dutillyi
(Dutilly's Sedge)
Carex impressinervia
(Impressed-Nerved Sedge)
Carex laevivaginata
(Smooth-Sheath Sedge)
Carex lepida
Carex lutea
(Sulphur Sedge)
Carex mckittrickensis
(Guadalupe Mountain Sedge)
Carex misandroides
(Manhater Sedge)
Carex parryana
Dewey var.
brevisquama
F.J.Herm. (Indian Valley Sedge)
Carex terrae-novae
(Newfoundland Sedge)
Carex tessellata
Carex tiogana
(Tioga Pass Sedge)
Cariniana kuhlmannii
Cariniana penduliflora
Carlowrightia ecuadoriana
Carpinus putoensis
Carpodiptera mirabilis
Carpoxylon macrospermum
(Carpoxylon Palm)
Casearia mauritiana
Casearia williamsiana
Cassine koordersii
Cassipourea eketensis
Cassipourea subcordata
Cassipourea subsessilis
Castanopsis catappaefolia
Castilleja chambersii
Castilleja christii
(Christ's Indian Paintbrush)
Castilleja chrymactis
(Green Indian Paintbrush)
Castilleja levisecta
(Golden Indian Paintbrush)
Castilleja mollis
(Soft-Leaved Indian Paintbrush)
Castilleja muelleri
(Kluane Lake Indian Paintbrush)
Castilleja ornata
(Glowing Indian Paintbrush)
Castilleja salsuginosa
(Monte Neva Indian Paintbrush)
Ceanothus ferrisiae
(Coyote Ceanothus)
Ceanothus hearstiorum
(Hearst Ranch Buckbrush)
Ceanothus masonii
(Bolinas Ceanothus)
Ceanothus ophiochilus
(Vail Lake Ceanothus)
Cenchrus agrimonioides
(Agrimony Sandbur)
Cenchrus agrimonioides
var.
agrimonioides
(Kamanomano)
Cenchrus agrimonioides
var.
laysanensis
(Laysan Agrimony Sandbur)
Centaurium sebaeoides
(Hawaiian Centaury-Plant)
Centaurodendron dracaenoides
Centaurodendron palmiforme
Centropogon albostellatus
Centropogon brachysiphoniatus
Centropogon cazaletii
Centropogon pilalensis
Centropogon solisii
Centropogon uncinatus
Ceratocentron fesselii
Ceratozamia euryphyllidia
Ceratozamia fusco-viridis
Ceratozamia kuesteriana
(Ceratozamia)
Ceratozamia norstogii
(Ceratozamia)
Ceratozamia zaragozae
Cercocarpus traskiae
(Catalina Island Mountain Mahogany)
Ceropegia decidua pretoriensis
Ceroxylon sasaimae
Cestrum tipocochense
Chaetocarpus pubescens
Chamaesyce arnottiana
(Arnott's Broomspurge)
Chamaesyce deppeana
(Deppe's Broomspurge)
Chamaesyce eleanoriae
(Na Pali Sandmat)
Chamaesyce garberi
(Garber's Spurge)
Chamaesyce halemanui
(Halemanu's Broomspurge)
Chamaesyce herbstii
(Herbst's Sandmat)
Chamaesyce remyi
(Remy's Broomspurge)
Chamaesyce remyi var. hanaleiensis
(Remy's Broomspurge)
Chamaesyce remyi var. kauaiensis
(Remy's Broomspurge)
Chamaesyce remyi var. remyi
(Remy's Broomspurge)
Chamaesyce rockii
(Koolau Range Sandmat)
Championella sarcorrhiza
Charpentiera densiflora
(Dense-Flowered Charpenttiera)
Chassalia capitata
(Bois Corail)
Chassalia coriacea
var.
johnstonii
Chassalia lanceolata
lanceolata
Chigua bernalii
Chigua restrepoi
Chionanthus fluminensis
Chionanthus proctorii
Chionanthus subsessilis
Chionanthus tenuis
Chlorogalum purpureum
var.
reductum
Hoover (Cammatta Canyon Amole)
Chloroleucon tortum
(Jurema)
Chlorophytum petrophilum
Chodanthus montecillensis
Chordospartium muritai
Chorizanthe howellii
(Mendocino Spineflower)
Chorizanthe orcuttiana
(San Diego Spineflower)
Chorizanthe rectispina
(One-Awned Chorizanthe)
Chorizanthe valida
(Sonoma Spineflower)
Chromolaena frustrata
(Cape Sabel Thorough-Wort)
Chrysophyllum durifructum
Chrysophyllum euryphyllum
Chrysophyllum oliviforme
(Satin Leaf)
Chrysophyllum superbum
Chrysopsis floridana
(Florida Golden Aster)
Chrysothamnus eremobius
(Pintwater Rabbit-Brush)
Cinnamomum kotoense
Cinnamomum rivulorum
Cinnamomum walaiwarense
Cipocereus pusilliflorus
(Cipocereus)
Cirsium hydrophilum
(Suisun Thistle)
Cirsium rusbyi
(Rusby's Thistle)
Cirsium scapanolepis
(Mountain Slope Thistle)
Cistanthe pulchella
(Mariposa Pussypaws)
Citharexylum quitense
Citharexylum svensonii
Citrus taiwanica
Claoxylon linostachys
Clarkia franciscana
(Presidio Clarkia)
Clarkia imbricata
(Vine Hill Clarkia)
Clarkia lingulata
(Merced Clarkia)
Clarkia mosquinii
(Mosquins Fairy Fan)
Clarkia tembloriensis
calientensis
(Springville Clarkia)
Clavija parvula
Claytonia ogilviensis
(Ogilvie Mountain Springbeauty)
Cleidion lemurum
Cleistanthus major
Cleistanthus robustus
Clematis morefieldii
(Morefield's Leather Flower)
Clematis socialis
(Alabama Leather Flower)
Clermontia fulva
(Yellowflower Clermontia)
Clermontia oblongifolia
brevipes
(Oahu Clermontia)
Clermontia oblongifolia
mauiensis
(Oahu Clermontia)
Clermontia pyrularia
(Hamakua Clermontia)
Clermontia samuelii
hanaensis
(Hana Clermontia)
Clermontia samuelii
samuelii
(Hana Clermontia)
Clethra coloradensis
Clidemia ecuadorensis
Clitoria andrei
Cnidoscolus regina
Coccoloba cholutecensis
Coccoloba lindaviana
Coccoloba retirensis
Coccothrinax borhidiana
(Borhidis Guano Palm)
Cochlearia sessilifolia
(Sessile-Leaf Scurvy-Grass)
Cola cecidiifolia
Cola metallica
Cola nigerica
Cola praeacuta
Coleocephalocereus purpureus
(Coleocephalocereus)
Colubrina hondurensis
Colubrina oppositifolia
(Kauila)
Columnea asteroloma
Columnea manabiana
Columnea poortmannii
Combretum tenuipetiolatum
Commidendrum spurium
(False Gumwood)
Comocladia parvifoliola
Connarus ecuadorensis
Connarus popenoei
Conradina etonia
(Etonia False Rosemary)
Conradina glabra
(Apalachicola False Rosemary)
Cooperia smallii
(Small's Rainlily)
Coprosma rapensis var. benefica
(Red Berry)
Corallorhiza bentleyi
(Bentleys Coralroot Orchid)
Cordia leslieae
Cordia rupicola
(Puerto Rican Manjack)
Cordia urticacea
Cordia wagnerorum
(Luquillo Mountain Manjack)
Cordylanthus nidularius
(Procumbent Bird's-Beak)
Cordylanthus palmatus
(Palmate-Bracted Bird's Beak)
Coreopsis integrifolia
(Chipola River Coreopsis)
Corispermum navicula
(Boat-Shaped Bugseed)
Cornutia obovata
(Palo De Nigua)
Coryphantha vogtherriana
(Coryphantha)
Cotylelobium lewisianum
Cotylelobium scabriusculum
Couepia joaquinae
Couepia scottmorii
Couratari asterophora
Couratari asterotricha
Couratari prancei
Craigia kwangsiensis
Crassula viridis
(Pricklyseed Pygmyweed)
Crataegus distincta
(Distinct Hawthorn)
Crataegus harbisonii
(Harbison Hawthorn)
Crataegus latebrosa
(Densewoods Hawthorn)
Crataegus nananixonii
(Nixons Hawthorn)
Crataegus nitidula
(Ontario Hawthorn)
Crataegus perjucunda
(Pearthorn)
Crataegus phippsii
(Phipps' Hawthorn)
Crotalaria avonensis
(Avon Park Rabbit Bells)
Croton macrocarpus
Croton vaughanii
Crotonogyne impedita
Crudia bibundina
Cryosophila cookii
Cryosophila grayumii
Cryptantha clokeyi
(Clokey's Cryptantha)
Cryptantha compacta
(Compact Cryptantha)
Cryptantha crassipes
(Terlingua Creek Cryptantha)
Cryptantha crinita
(Sacramento Cryptantha)
Cryptantha incana
(Tulare Cryptantha)
Cryptantha johnstonii
(Johnston's Cryptantha)
Cryptantha mirabunda
(Wonderful Cryptantha)
Cryptantha ochroleuca
(Yellowwhite Cryptantha)
Cryptantha roosiorum
(Bristle-Cone Cryptantha)
Cryptantha semiglabra
(Pipe Springs Cryptantha)
Cryptantha shackletteana
(Shacklette's Catseye)
Cryptocarya elliptifolia
Cryptocarya ferrarsii
Ctenitis pallatangana
Ctenitis squamigera
(Pacific Lacefern)
Cucurbita okeechobeensis
(Okeechobee Gourd)
Cuminia eriantha
Cuminia fernandezia
Cupania riopalenquensis
Cuphea aspera
(Tropical Waxweed)
Cupressus chengiana
var.
jiangeensis
Cupressus dupreziana
var.
dupreziana
Cupressus goveniana
(Santa Cruz Island Cypress)
Cupressus guadalupensis
var.
guadalupensis
Cuscuta dentatasquamata
(Los Pinitos Dodder)
Cuscuta mitriformis
(Cochise Dodder)
Cuscuta odontolepis
(Santa Rita Mountain Dodder)
Cuscuta plattensis
(Prairie Dodder)
Cyanea acuminata
(Acuminate Cyanea)
Cyanea asarifolia
(Gingerleaf Cyanea)
Cyanea aspleniifolia
(Spleenwort-Leaved Cyanea)
Cyanea calycina
(Waianae Range Rollandia)
Cyanea copelandii
(Treetrunk Cyanea)
Cyanea copelandii
haleakalaensis
(Treetrunk Cyanea)
Cyanea crispa
(Koolau Range Rollandia)
Cyanea dolichopoda
Cyanea dunbarii
(Dunbar's Cyanea)
Cyanea eleeleensis
(Eleele Cyanea)
Cyanea glabra
(Smooth Cyanea)
Cyanea grimesiana
(Splitleaf Cyanea)
Cyanea grimesiana
grimesiana
(Splitleaf Cyanea)
Cyanea grimesiana
obatae
(Splitleaf Cyanea)
Cyanea hamatiflora
(Wetforest Cyanea)
Cyanea hamatiflora
carlsonii
(Wetforest Cyanea)
Cyanea hamatiflora
hamatiflora
(Wetforest Cyanea)
Cyanea horrida
(Prickly Cyanea)
Cyanea kolekoleensis
(Kolekole Cyanea)
Cyanea kuhihewa
Cyanea lanceolata
lanceolata
(Degener's Rollandia)
Cyanea leptostegia
(Giant Koke'e Cyanea)
Cyanea lobata
(Waihee Valley Cyanea)
Cyanea macrostegia
(Purple Cyanea)
Cyanea mauiensis
(Mceldowney's Cyanea)
Cyanea munroi
(Munro's Cyanea)
Cyanea obtusa
(Blunt-Lobe Cyanea)
Cyanea platyphylla
(Flat-Leaved Cyanea)
Cyanea procera
(Molokai Cyanea)
Cyanea remyi
(Remy's Cyanea)
Cyanea shipmanii
(Shipman's Cyanea)
Cyanea solanacea
(Popolo)
Cyanea st-johnii
(St John's Rollandia)
Cyanea stictophylla
(Kaiholena Cyanea)
Cyanea undulata
(Leechleaf Cyanea)
Cycas beddomei
(Andhra Pradesh Cycas)
Cycas chamaoensis
(Cycad)
Cycas debaoensis
(Multipinnate Cycas)
Cycas hongheensis
(Cycad)
Cycas szechuanenis
Cycas tansachana
Cylindrocline commersonii
Cymopterus goodrichii
(Goodrich's Springparsley)
Cymopterus minimus
(Cedar Breaks Springparsley)
Cymopterus panamintensis
(Panamint Spring-Parsley)
Cymopterus panamintensis
Coult. & Rose var.
acutifolius
(Coult. & Rose) Munz (Panamint Springparsley)
Cymopterus panamintensis
Coult. and Rose var.
panamintensis
Coult. and Rose (Panamint Springparsley)
Cynanchum anegadense
(Caribbean Swallow-Wort)
Cynanchum blodgettii
(Blodgett's Swallow-Wort)
Cynanchum densiflorum
Cynanchum serpyllifolium
Cynanchum spruceanum
Cynanchum velutinum
Cynometra falcata
Cynometra filifera
Cynometra gillmanii
Cyperus auriculatus
(Eared Flatsedge)
Cyperus cephalanthus
(Buttonbush Flatsedge)
Cyperus fauriei
(Alpine Flatsedge)
Cyperus microcristatus
Cyperus multifolius
Cyperus pennatiformis
(Coastal Flatsedge)
Cyperus pennatiformis
var.
pennatiformis
(Coastal Flatsedge)
Cyperus trachysanthos
(Sticky Flatsedge)
Cyphophoenix nucele
(Cyphophoenix)
Cyphosperma tanga
Cypripedium fargesii
Cypripedium henryi
(Lady Slipper Orchid)
Cypripedium smithii
Cypripedium wumengense
Cypripedium yunnanense
Cyrtandra biserrata
(Double-Toothed Cyrtandra)
Cyrtandra cyaneoides
(Mapele)
Cyrtandra dentata
(Sharp-Toothed Cyrtandra)
Cyrtandra filipes
(Slender-Stalked Cyrtandra)
Cyrtandra halawensis
(Toothleaf Cyrtandra)
Cyrtandra hematos
(Singleflower Cyrtandra)
Cyrtandra kaulantha
(Waikane Valley Cyrtandra)
Cyrtandra lydgatei
(Lydgate's Cyrtandra)
Cyrtandra munroi
(Lanaihale Cyrtandra)
Cyrtandra oenobarba
(Shaggystem Cyrtandra)
Cyrtandra oxybapha
(Pohakea Gulch Cyrtandra)
Cyrtandra paliku
Cyrtandra polyantha
(Niu Valley Cyrtandra)
Cyrtandra rivularis
(River Cyrtandra)
Cyrtandra sandwicensis
(Hairy Cyrtandra)
Cyrtandra sessilis
(Windyridge Cyrtandra)
Cyrtandra subumbellata
(Parasol Cyrtandra)
Cyrtandra tintinnabula
(Laupahoehoe Cyrtandra)
Cyrtandra viridiflora
(Green-Leaved Cyrtandra)
Cystoathyrium chinense
D
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Dacrydium guillauminii
Dactyladenia cinerea
Dactyladenia dichotoma
Dactyladenia eketensis
Dactyladenia johnstonei
Dactyladenia mannii
Dalbergia intibucana
Dalea bartonii
(Warnocks Prairie Clover)
Dalea tentaculoides
(Gentry's Indigobush)
Daphnopsis occulta
Darwiniothamnus lancifolius lancifolius
Dasphyllum lehmannii
Debregeasia ceylanica
Decazyx esparzae
Deeringothamnus pulchellus
(Royal False Pawpaw)
Deeringothamnus rugelii
(Rugel's False Pawpaw)
Dehaasia acuminata
Dehaasia chatacea
Dehaasia pugerensis
Delissea rhytidosperma
(Kauai Delissea)
Delissea rivularis
(Plateau Delissea)
Delissea subcordata
(Heart-Shaped Delissea)
Delissea undulata
(Leechleaf Delissea)
Delissea undulata
undulata
(Leechleaf Delissea)
Delonix velutina
Delosperma macellum
Delphinium bakeri
(Baker's Delphinium)
Delphinium luteum
(Yellow Larkspur)
Dendrobium huoshanense
Dendrobium officinale
Dendrobium schuetzei
Dendropanax cordifolius
Dendropanax filipes
Dendropanax grandiflorus
Dendropanax grandis
Dendropanax hondurensis
Dendropanax oligodontus
Dendroseris berteriana
Dendroseris gigantea
Dendroseris litoralis
Dendroseris macrantha
Dendroseris macrophylla
Dendroseris marginata
Dendroseris micrantha
Dendroseris neriifolia
Dendroseris pinnata
Dendroseris pruinata
Dendroseris regia
Deschampsia alpina
(Alpine Hair Grass)
Descurainia torulosa
(Wind River Tansymustard)
Desmodium humifusum
(Eastern Trailing Tickt Trefoil)
Desmodium ochroleucum
(Creamflower Tick-Trefoil)
Desmopsis dolichopetala
Dialium travancoricum
Diastema incisum
Dicellostyles axillaris
Dicerandra christmanii
(Yellow Scrub Balm)
Dicerandra cornutissima
(Longspurred Mint)
Dicerandra frutescens
(Scrub Balm)
Dicerandra immaculata
(Lakela's Mint)
Dicerandra radfordiana
(Radford Dicerandra)
Dichanthelium hirstii
(Hirsts' Panic Grass)
Dichelostemma congestum
(Forktooth Ookow)
Dicliptera dodsonii
Dicoma pretoriensis
Dictyosperma album
var.
album
Dictyosperma album
var.
conjugatum
(Round Island Hurricane Palm)
Diellia erecta
(Asplenium-Leaved Diellia)
Diellia laciniata
(Cutleaf Island Spleenwort)
Diellia mannii
(Mann's Island Spleenwort)
Diellia unisora
(Singlesorus Island Spleenwort)
Digitaria floridana
(Florida Crabgrass)
Digitaria gracillima
(Long-Leaf Crabgrass)
Dillenia triquetra
Dimorphocalyx glabellus
Dioon caputoi
(Plama Real)
Diospyros angulata
(Bois D'ÉbÈne Feuilles)
Diospyros benstonei
Diospyros chrysophyllos
(Bois D'ÉbÈne Blanc)
Diospyros egrettarum
(Bois D'ÉbÈne D'ile Aux Aigrettes Feuilles)
Diospyros hemiteles
(Bois D'ÉbÈne Feuilles)
Diospyros katendei
Diospyros lolinopsis
Diospyros molissima
Diospyros moonii
Diospyros mun
(Ebony)
Diospyros nodosa
(Bois D'ÉbÈne Feuilles)
Diospyros rheophytica
Diospyros vaccinioides
(Small Persimmon)
Diospyros veillonii
Diplandrorchis sinica
Diplazium molokaiense
(Molokai Twin-Sorus Fern)
Diplospora erythrospora
Dipterocarpus applanatus
Dipterocarpus baudii
Dipterocarpus bourdilloni
Dipterocarpus caudatus caudatus
Dipterocarpus chartaceus
Dipterocarpus concavus
Dipterocarpus conformis conformis
Dipterocarpus coriaceus
Dipterocarpus cornutus
Dipterocarpus costulatus
Dipterocarpus cuspidatus
Dipterocarpus dyeri
Dipterocarpus elongatus
Dipterocarpus eurynchus
Dipterocarpus fagineus
Dipterocarpus fusiformis
Dipterocarpus glabrigemmatus
Dipterocarpus glandulosus
Dipterocarpus globosus
Dipterocarpus gracilis
Dipterocarpus grandiflorus
Dipterocarpus hasseltii
Dipterocarpus hispidus
Dipterocarpus insignis
Dipterocarpus kerrii
Dipterocarpus kunstleri
Dipterocarpus lamellatus
Dipterocarpus littoralis
Dipterocarpus lowii
Dipterocarpus perakensis
Dipterocarpus rigidus
Dipterocarpus rotundifolius
Dipterocarpus semivestitus
Dipterocarpus tempehes
Dipterocarpus turbinatus
Dipterocarpus validus
Ditaxis macrantha
Dodecahema leptoceras
(Slender-Horned Spineflower)
Dombeya acutangula
(Bois Bete)
Dombeya ledermannii
Doodia lyonii
(Lyon's Hacksaw Fern)
Doryopteris angelica
(Digit Fern)
Doryopteris takeuchii
(Takeuch's Lip Fern)
Draba brachystylis
(Shortstyle Draba)
Draba chamissonis
(Cape Thompson Whitlow-Grass)
Draba ecuadoriana
Draba juvenilis
(Tundra Whitlow-Grass)
Draba kassii
(Kass Rockcress)
Draba kluanei
(Kluane Park Whitlowgrass)
Draba monoensis
(White Mountains Draba)
Draba paucifructa
(Charleston Mountain Draba)
Draba ramulosa
(Tushar Mountain Draba)
Draba scotteri
(Scotter's Whitlowgrass)
Draba sharsmithii
(Sharsmith's Draba)
Draba violacea
Draba weberi
(Weber's Draba)
Dracontomelon macrocarpum
Drepanolejeunea senticosa
Drymophloeus samoensis
Dryobalanops aromatica
(Borneo Camphor)
Dryobalanops fusca
Dryobalanops keithii
Dryopteris podosora
(Kauaikinana Wood Fern)
Dryopteris rossii
(Ross' Wood Fern)
Dryopteris tenebrosa
(Na Pali-Kona Woodfern)
Dryopteris tetrapinnata
Drypetes riseleyi
Drypetes tessmanniana
Drypetes usambarica
var.
rugulosa
Dubautia herbstobatae
(Keaau Valley Dubautia)
Dubautia imbricata
acronaea
(Imbricate Dubautia)
Dubautia imbricata
imbricata
(Imbricate Dubautia)
Dubautia kenwoodii
Dubautia latifolia
(Broad-Leaved Dubautia)
Dubautia paleata
(Na'ena'e Pua Kea)
Dubautia pauciflorula
(Wahiawa Bog Dubautia)
Dubautia sherffiana
(Waianae Range Dubautia)
Dubautia syndetica
(Wahiawa Dubautia)
Dubautia waialealae
(Waialeale Dubautia)
Dudleya densiflora
(San Gabriel Mountains Live-Forever)
Dudleya gnoma
(Munchkin Dudleya)
Dudleya nesiotica
(Santa Cruz Island Live-Forever)
Dudleya setchellii
(Santa Clara Valley Live-Forever)
Dudleya stolonifera
(Laguna Beach Live-Forever)
Dudleya traskiae
(Santa Barbara Island Live-Forever)
Dudleya verityi
(Verity's Liveforever)
Duguetia peruviana
Duvaliandra dioscoridis
(Duvaliandra)
Dypsis ambanjae
Dypsis ambositrae
(Ambositra Palm)
Dypsis arenarum
(Sand Palm)
Dypsis canaliculata
Dypsis canescens
Dypsis ceracea
(Dypsis)
Dypsis commersoniana
Dypsis hovomantsina
(Hovomantsina Palm)
Dypsis ifanadianae
Dypsis intermedia
Dypsis interrupta
Dypsis ligulata
Dypsis mangorensis
Dypsis nauseosa
(Dypsis)
Dypsis nossibensis
Dypsis oropedionis
Dypsis ovobontsira
Dypsis psammophila
(Dypsis)
Dypsis saintelucei
Dypsis singularis
Dysoxylum pachypodum
Dysoxylum peerisi
E
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Echeandia texensis
(Texas Craglily)
Echinocactus grusonii
(Golden Barrel Cactus)
Echinodorus floridanus
Egletes humifusa
Elaeagnus conferta dendroidea
Elaeocarpus bojeri
Elaeocarpus gaussenii
Elaeocarpus integrifolius
Elaphandra retroflexa
Elaphoglossum actinolepis
Elaphoglossum angamarcanum
Elaphoglossum bonapartii
Elaphoglossum chodatii
Elaphoglossum christii
Elaphoglossum cladotrichium
Elaphoglossum corazonense
Elaphoglossum dimorphum
Elaphoglossum gossypinum
Elaphoglossum gracilipes
Elaphoglossum jamesonii
Elaphoglossum longissimum
Elaphoglossum pellucidum
(Jeweled Tonguefern)
Elaphoglossum polytrichum
Elaphoglossum pteropodum
Elaphoglossum sodiroi
Elaphoglossum sprucei
Elaphoglossum trichophorum
Eleocharis brachycarpa
(Short-Fruited Spikerush)
Eleocharis cylindrica
(Cylinder Spike-Rush)
Eleocharis obtusa
(Wright's Spike-Rush)
Eleocharis torticulmis
(Twisted Spikerush)
Elymus vulpinus
(Rydberg's Wildrye)
Emilia coccinea
(Scarlet Tasselflower)
Encephalartos aemulans
Encephalartos cerinus
(Waxen Palm)
Encephalartos cupidus
(Cycad)
Encephalartos dolomiticus
(Wolkberg Cycad)
Encephalartos dyerianus
(Encephalartos)
Encephalartos equatorialis
Encephalartos heenanii
(Heenans Cycad)
Encephalartos hirsutus
Encephalartos inopinus
(Lydenburg Cycad)
Encephalartos laevifolius
(Encephalartos)
Encephalartos latifrons
(Broadleaf Kafferbread)
Encephalartos middelburgensis
(Middleburg Cycad)
Encephalartos msinganus
Encephalartos munchii
(Cycad)
Encephalartos pterogonus
(Toothed Cone Cycad)
Encephalartos tegulaneus
powysii
Epilobium howellii
(Yuba Pass Willowherb)
Epithelantha micromeris polycephala
(Button Cactus)
Eragrostis fosbergii
(Fosberg's Love Grass)
Ericameria gilmanii
(Whiteflower Goldenbush)
Ericameria lignumviridis
(Greenwood's Heath-Goldenrod)
Erigeron abajoensis
(Abajo Fleabane)
Erigeron acomanus
(Bluewater Fleabane)
Erigeron adscendens
Erigeron angustatus
(Serpentine Fleabane)
Erigeron awapensis
(Awapa Fleabane)
Erigeron bistiensis
(Ojo Alamo Fleabane)
Erigeron calvus
(Bald Fleabane)
Erigeron heliographis
(Heliograph Peak Fleabane)
Erigeron hessii
(Hess' Fleabane)
Erigeron kuschei
(Chiricahua Fleabane)
Erigeron lemmonii
(Lemmon's Fleabane)
Erigeron multiceps
(Kern River Fleabane)
Erigeron piscaticus
(Fish Creek Fleabane)
Erigeron scotteri
(Scotter's Fleabane)
Erigeron serpentinus
(Serpentine Erigeron)
Erigeron supplex
(Supple Fleabane)
Erigeron wilkenii
(Dieter's Erigeron)
Eriocaulon nigrobracteatum
(Black-Bract Pipewort)
Eriogonum ammophilum
(Ibex Wild Buckwheat)
Eriogonum argophyllum
(Sulphur Hot Springs Buckwheat)
Eriogonum brandegeei
(Brandegee Wild Buckwheat)
Eriogonum butterworthianum
(Butterworth's Buckwheat)
Eriogonum chrysops
(Bitterroot Buckwheat)
Eriogonum codium
(Basalt Desert Buckwheat)
Eriogonum cronquistii
(Cronquist's Wild Buckwheat)
Eriogonum diatomaceum
(Churchill Narrows Buckwheat)
Eriogonum eremicola
(Wild Rose Canyon Buckwheat)
Eriogonum gypsophilum
(Seven River Hills Buckwheat)
Eriogonum holmgrenii
(Snake Range Buckwheat)
Eriogonum hylophilum
(Gate Canyon Wild Buckwheat)
Eriogonum kelloggii
(Red Mountain Buckwheat)
Eriogonum mortonianum
(Fredonia Wild Buckwheat)
Eriogonum phoeniceum
Eriogonum smithii
(Smith Wild Buckwheat)
Eriogonum soredium
(Frisco Buckwheat)
Eriogonum spectabile
(Barron's Buckwheat)
Eriogonum tiehmii
(Tiehm's Buckwheat)
Eriogonum verrucosum
(Graceful Buckwheat)
Eriophyllum latilobum
(San Mateo Woolly Sunflower)
Eryngium castrense
(Great Valley Eryngo)
Eryngium constancei
(Loch Lomond Coyote-Thistle)
Eryngium cuneifolium
(Wedge-Leaved Button-Snakeroot)
Eryngium pendletonensis
(Pendleton Button-Celery)
Eryngium phyteumae
(Huachuca Mountain Coyote-Thistle)
Erythrina perrieri
Erythrina tahitensis
(Oporavainui)
Erythronium elegans
(Coast Range Fawn Lily)
Erythronium pluriflorum
(Shuteye Peak Fawn Lily)
Erythronium propullans
(Minnesota Dwarf Trout Lily)
Erythronium taylorii
(Taylor's Fawn-Lily)
Eschscholzia rhombipetala
(Diamond-Petaled California Poppy)
Eschweilera amplexifolia
Eschweilera compressa
Escobaria aguirreana
Escobaria guadalupensis
(Guadalupe Mountain Foxtail Cactus)
Escobaria minima
(Nellie Cory Cactus)
Escobaria robbinsiorum
(Cochise Pincushion Cactus)
Eucalyptus recurva
(Mongarlowe Mallee)
Eugenia aboukirensis
Eugenia acutissima
Eugenia albida
Eugenia arianae
Eugenia bojeri
Eugenia camptophylla
Eugenia coyolensis
Eugenia crassipetala
Eugenia gageana
Eugenia gilgii
Eugenia guayaquilensis
Eugenia hanoverensis
Eugenia harrisii
var.
grandifolia
Eugenia hastilis
(Bois De Clous)
Eugenia insignis
Eugenia kameruniana
Eugenia kellyana
Eugenia klossii
Eugenia lancetillae
Eugenia polypora
Eugenia rendlei
Eugenia rheophytica
Eugenia scalarinervis
Eugenia singampattiana
Eugenia vaughanii
Eugenia woodburyana
(Woodbury's Stopper)
Euonymus pallidifolia
Euphorbia alcicornis
Euphorbia ankazobensis
Euphorbia berorohae
Euphorbia boinensis
Euphorbia capmanambatoensis
Euphorbia cylindrifolia tuberifera
var.
tuberifera
Euphorbia decaryi
(Euphorbia)
Euphorbia decaryi
var.
robinsonii
Euphorbia elastica
Euphorbia francoisii
(Euphorbia)
Euphorbia francoisii
var.
francoisii
Euphorbia geroldii
(Euphorbia)
Euphorbia iharanae
Euphorbia kondoi
(Euphorbia)
Euphorbia labatii
Euphorbia lophogona
var.
tenuicaulis
Euphorbia millotii
(Euphorbia)
Euphorbia origanoides
(Ascension Spurge)
Euphorbia pachypodioides
(Euphorbia)
Euphorbia parvicyathophora
Euphorbia quitensis
Euphorbia razafindratsirae
Euphorbia robivelonae
Euphorbia rosescens
Euphorbia stenoclada
ambatofinandranae
Euphorbia tanaensis
Euphorbia telephioides
(Telephus Spurge)
Euphorbia tulearensis
(Euphorbia)
Eurybia saxicastellii
(Rockcastle Aster)
Eurybia spinulosa
(Apalachicola Aster)
Euryodendron excelsum
Eutrema penlandii
(Penland's Alpine Fen Mustard)
Exocarpos luteolus
(Leafy Ballart)
Exostema orbiculatum
F
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Faujasiopsis reticulata
(Oreille De Souris)
Festuca hawaiiensis
(Hawaiian Fescue)
Festuca ligulata
(Guadalupe Fescue)
Ficus angladei
Ficus faulkneriana
Ficus lateriflora
Fissidens hydropogon
Fissistigma tungfangense
Flueggea elliptica
Flueggea neowawraea
(Mehamehame)
Forestiera hondurensis
Frasera gypsicola
(Sunnyside Green-Gentian)
Fraxinus hondurensis
Fremontodendron decumbens
(Pine Hill Flannel Bush)
Freziera euryoides
Freziera forerorum
Freziera inaequilatera
Freziera roraimensis
Freziera stuebelii
Freziera subintegrifolia
Freziera uniauriculata
Freziera varibrateata
Fritillaria gentneri
(Gentner's Fritillaria)
Fritillaria grayana
(Gray's Fritillary)
Fritillaria ojaiensis
(Ojai Fritillary)
G
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Gaertnera hirtiflora
(Bois Banane)
Gaertnera longifolia
Gaertnera truncata
Gahnia lanaiensis
(Lanai Sawsedge)
Galactia smallii
(Small's Milk Pea)
Galeandra bicarinata
(Two-Keeled Hooded Orchid)
Galium argense
(Argus Bedstraw)
Galium grande
(San Gabriel Bedstraw)
Garcinia cadelliana
Gardenia anapetes
Gardenia brighamii
(Native Hawaiian Gardenia Nau)
Gardenia candida
Gardenia mannii
(Mann's Gardenia)
Gardenia vitiensis
Gasteranthus atratus
Gasteranthus extinctus
Gastonia elegans
(Bois Boeuf)
Gastonia lionnetii
Gastonia rodriguesiana
Gastonia sechellarum
var.
contracta
Gastonia sechellarum
var.
curiosae
Gastrochilus calceolaris
Gastrodia africana
Gazania thermalis
Geissois ternata var. serrata
Geniostoma clavigerum
Genistidium dumosum
(Brush-Pea)
Gentlea molinae
Genyorchis platybulbon
Geranium antisanae
Geranium arboreum
(Hawaiian Red-Flowered Geranium)
Geranium hanaense
(Maui Geranium)
Geranium kauaiense
(Kauai Geranium)
Geranium pusillum
(Small-Flower Crane's-Bill)
Gesneria scabra
var.
fawcettii
Geum radiatum
(Appalachian Avens)
Gilia maculata
(Little San Bernardino Mountains Gilia)
Gilia sedifolia
(Stonecrop Gilia)
Gilia tenuis
(Mussentuchit Creek Gilia)
Gilia yorkii
(Boyden Cave Gily-Flower)
Gilmania luteola
(Golden Carpet)
Glaucocarpum suffrutescens
(Shrubby Reed-Mustard)
Gleditsia japonica
Glochidion papenooense
Gloeospermum boreale
Glossopetalon texense
(Texas Grease Bush)
Glycosmis crassifolia
Gmelina lignum-vitreum
Gnaphalium sodiroi
Gongrospermum philippinense
Goniostemma punctatum
Gonzalagunia bifida
Gonzalagunia dodsonii
Gonzalagunia mollis
Gordonia curtyana
Gouania hillebrandii
(Hairyfruit Chewstick)
Gouania meyenii
(Smoothfruit Chewstick)
Gouania vitifolia
(Oahu Chewstick)
Guarea sprucei
Guatteria microcarpa
Guatteria occidentalis
Guatteria sodiroi
Guettarda longiflora
Guioa grandifoliola
Guioa hospita
Guioa palawanica
Guioa parvifoliola
Guioa reticulata
Gustavia latifolia
Gustavia longifuniculata
Guzmania lepidota
Guzmania poortmanii
Guzmania striata
Gypsophila pilosa
(Moon Cactus Harrisia Martinii)
H
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Habenaria maitlandii
Hackelia ibapensis
(Deep Creek Stickseed)
Hackelia venusta
(Lesser Showy Stickseed)
Halfordia papuana
Hampea thespesioides
Haplostachys haplostachya
(Honohono)
Harperocallis flava
(Harper's Beauty)
Hasteola robertiorum
(Gulf Hammock Indian Plantain)
Hazardia orcuttii
(Orcutt's Bristleweed)
Hedyotis degeneri
Fosberg var.
coprosmifolia
Fosberg (Waianae Range Starviolet)
Helianthus carnosus
(Flatwoods Sunflower)
Helianthus verticillatus
(Sunflower)
Helicia peltata
Helicia polyosmoides
Helicia subcordata
Hemizonia arida
(Red Rock Tarweed)
Hemizonia halliana
(Hall's Tarweed)
Henriettea granularis
Henriettea membranifolia
(Thinleaf Camasey)
Hernandia cubensis
Hernandia temarii
Herrania laciniifolia
Hesperolinon didymocarpum
(Lake County Dwarf-Flax)
Hesperolinon drymarioides
(Drymaria Dwarf-Flax)
Hesperolinon tehamense
(Tehama County Western Flax)
Hesperomannia arborescens
(Lanai Hesperomannia)
Hesperomannia arbuscula
(Maui Hesperomannia)
Hesperomannia lydgatei
(Kauai Hesperomannia)
Heterotheca barbata
(Spokane False Goldenaster)
Heterotheca monarchensis
(Sequoia False Golden-Aster)
Heuchera alpestris
(San Bernardino Mountains Alumroot)
Hexalectris revoluta
(Chisos Mountain Crested Coralroot)
Hexapora curtisii
Hibiscadelphus distans
(Kauai Hau Kuahiwi)
Hibiscadelphus giffardianus
(Kilauea Hau Kuahiwi)
Hibiscadelphus hualalaiensis
(Hualalai Hau Kuahiwi)
Hibiscadelphus woodii
(Wood's Hau Kuahiwi)
Hibiscus brackenridgei
(Brackenridge's Rosemallow)
Hibiscus brackenridgei molokaiana
(Brackenridge's Rosemallow)
Hibiscus clayi
(Red Kauai Rosemallow Hibiscus Clayi)
Hibiscus dasycalyx
(Nacogdoches River Mallow)
Hibiscus fragilis
(Mandrinette)
Hieracium debile
Hieronima crassistipula
Hildegardia populifolia
Hoffmannseggia tenella
(Slender Rush-Pea)
Holmgrenanthe petrophila
(Rock Lady)
Holmskioldia gigas
Holocarpha macradenia
(Santa Cruz Tarplant)
Hopea acuminata
Hopea aequalis
Hopea andersonii basalticola
Hopea apiculata
Hopea bancana
Hopea basilanica
Hopea beccariana
Hopea bilitonensis
Hopea brachyptera
Hopea brevipetiolaris
Hopea cagayanensis
Hopea chinensis
Hopea cordata
Hopea coriacea
Hopea depressinerva
Hopea enicosanthoides
Hopea erosa
Hopea ferruginea
Hopea glaucescens
Hopea hainanensis
Hopea helferi
Hopea hongayanensis
Hopea inexpectata
Hopea jacobi
Hopea johorensis
Hopea jucunda jucunda
Hopea jucunda modesta
Hopea kerangasensis
Hopea latifolia
Hopea longirostrata
Hopea malibato
Hopea mengerawan
Hopea micrantha
(Hopea)
Hopea mindanensis
Hopea mollissima
Hopea montana
Hopea nervosa
Hopea nigra
Hopea nutans
Hopea ovoidea
Hopea pentanervia
Hopea philippinensis
Hopea plagata
Hopea polyalthioides
Hopea pubescens
Hopea quisumbingiana
Hopea reticulata
Hopea samarensis
Hopea sangal
Hopea semicuneata
Hopea siamensis
Hopea sphaerocarpa
Hopea sublanceolata
Hopea sulcata
Hopea tenuivervula
Hopea thorelii