A

Last updated October 1, 2009

NAME FAMILY NATIVITY
Abelia x grandiflora cv. Edward Goucher Caprifoliaceae
Abrophyllum ornans Grossulariaceae Australia(Queensland, NSW)
Abutilon sp. Malvaceae
Abutilon x hybridum cv. Nabob Malvaceae
Acacia binervia Mimosaceae E Australia
Acacia elata Mimosaceae SE Australia
Acacia melanoxylon Mimosaceae Australia
Acacia pendula Mimosaceae Australia
Acacia sieberana v. woodii Mimosaceae South Africa
Acacia spectabilis Mimosaceae Australia
Acacia stenophylla Mimosaceae Australia
Acacia subporosa Mimosaceae Australia
Acacia verticillata ssp. verticillata Mimosaceae SE Australia
Acalypha pendula Euphorbiaceae Cuba
Acalypha sp. Euphorbiaceae
Acanthocalycium spiniflorum Cactaceae Argentina(Cordoba)
Acanthocereus colombianus Cactaceae Colombia
Acanthocereus horridus Cactaceae SE Mex, Guatemala, El Salvador
Acanthocereus sp. Cactaceae
Acanthostachys pitcairnioides Bromeliaceae Brazil(Espirito Santo)
Acanthostachys strobilacea Bromeliaceae South America
Acanthus mollis Acanthaceae S Europe
Acer negundo cv. Flamingo Aceraceae
Acer palmatum Aceraceae Asia
Acer palmatum cv. Dissectum Aceraceae
Acer palmatum cv. Dissectum Atropurpureum Aceraceae
Acer palmatum cv. Glowing Embers Aceraceae
Acer palmatum cv. Seiryu Aceraceae
Acer palmatum cv. Tobiosho Aceraceae
Achillea cv. Moonshine Asteraceae
Achillea filipendulina cv. Cloth of Gold Asteraceae
Achillea millefolium cv. Cerise Queen Asteraceae
Achillea millefolium cv. Lavender Beauty Asteraceae
Achillea millefolium cv. Paprika Asteraceae
Achillea sp. Asteraceae
Acnistus arborescens Solanaceae Tropical America
Acoelorrhaphe wrightii Arecaceae Fla. to Cen America, W. Indies
Acorus calamus cv. Variegatus Acoraceae
Acrocomia aculeata Arecaceae NE Argentina, Paraguay
Adenanthos cuneatus cv. Coral Drift Proteaceae Australia
Adenanthos sericeus Proteaceae Australia
Adenia epigea Passifloraceae Madagascar
Adenia globosa Passifloraceae Africa
Adenia venenata Passifloraceae Ethiopia to E Africa
Adenium arabicum Apocynaceae Arabia
Adenium arabicum Apocynaceae Saudi Arabia
Adenium cv. Chompoo Sam Ran Apocynaceae
Adenium swazicum Apocynaceae African Tropics
Adiantum aleuticum Adiantaceae Canada to W United States
Adiantum formosum Pteridaceae Australia and NZ
Adiantum hispidulum Adiantaceae Old World Tropics
Adiantum raddianum Adiantaceae
Adiantum raddianum cv. Fragrantissimum Adiantaceae
Adiantum raddianum cv. Pacottii Adiantaceae
Adromischus cf. cristatus Crassulaceae South Africa
Adromischus cristatus Crassulaceae South Africa
Aechmea blanchetiana Bromeliaceae Brazil
Aechmea bracteata Bromeliaceae Mexico to Colombia
Aechmea bromeliifolia Bromeliaceae Cen America to South America
Aechmea bromeliifolia v. rubra Bromeliaceae Argentina to S Brazil
Aechmea calyculata Bromeliaceae S Brazil
Aechmea caudata Bromeliaceae S Brazil
Aechmea coelestis Bromeliaceae Brazil
Aechmea comata Bromeliaceae
Aechmea comata v. makoyana Bromeliaceae Brazil
Aechmea cv. Belizia Bromeliaceae
Aechmea cv. Big Stuff Bromeliaceae
Aechmea cv. Black Panther Bromeliaceae
Aechmea cv. Burgundy Bromeliaceae
Aechmea cv. Mirlo Bromeliaceae
Aechmea cylindrata Bromeliaceae S Brazil
Aechmea distichantha Bromeliaceae Brazil
Aechmea fasciata Bromeliaceae Brazil
Aechmea fasciata v. purpurea Bromeliaceae Brazil
Aechmea fendleri hybrid Bromeliaceae
Aechmea flavo-rosea Bromeliaceae Brazil(Rio de Janeiro)
Aechmea luddemanniana Bromeliaceae Mexico, Cen America
Aechmea nudicaulis Bromeliaceae Brazil
Aechmea nudicaulis v. albomarginata Bromeliaceae
Aechmea orlandiana Bromeliaceae Brazil
Aechmea orlandiana x fosteriana cv. Bert Bromeliaceae
Aechmea ornata Bromeliaceae Brazil
Aechmea ornata v. nationalis Bromeliaceae Brazil
Aechmea pectinata Bromeliaceae Brazil
Aechmea phanerophlebia Bromeliaceae S Brazil
Aechmea pineliana Bromeliaceae Brazil
Aechmea pineliana v. minuta Bromeliaceae Brazil
Aechmea racinae Bromeliaceae Brazil
Aechmea ramosa Bromeliaceae Brazil
Aechmea ramosa v. festiva Bromeliaceae E Brazil
Aechmea recurvata cv. Aztec Gold Bromeliaceae
Aechmea recurvata v. benrathii Bromeliaceae Brazil
Aechmea recurvata v. ortgiesii Bromeliaceae Brazil
Aechmea recurvata v. recurvata Bromeliaceae Brazil
Aechmea recurvata x comata Bromeliaceae Brazil
Aechmea sp. Bromeliaceae
Aechmea triangularis Bromeliaceae Brazil
Aechmea weilbachii f. leodiensis Bromeliaceae Brazil
Aeonium arboreum cv. Sunburst Crassulaceae
Aeonium arboreum cv. Zwartkop Crassulaceae
Aeonium arboreum v. holochrysum Crassulaceae Spain(Canary Islands)
Aeonium canariensis Crassulaceae Spain
Aeonium castello-paivae Crassulaceae Spain(Canary Islands)
Aeonium cuneatum Crassulaceae Spain(Canary Islands)
Aeonium cv. Cyclops Crassulaceae
Aeonium lindleyi Crassulaceae Spain(Canary Islands)
Aeonium nobile Crassulaceae Spain(Canary Islands)
Aeonium sedifolium Crassulaceae Spain(Canary Islands)
Aeonium simsii Crassulaceae Spain(Canary Islands)
Aeonium simsii x Zwartkopf Crassulaceae
Aeonium sp. Crassulaceae
Aeonium spathulatum Crassulaceae Spain(Canary Islands)
Aeonium undulatum Crassulaceae Spain(Canary Islands)
Aeonium urbicum Crassulaceae Spain(Canary Islands)
Aeonium virgineum Crassulaceae Spain(Canary Islands)
Afrocarpus gracilior Podocarpaceae E & S Africa
Afrocarpus henkelii Podocarpaceae Africa
Agapanthus orientalis Alliaceae Africa
Agathis robusta Araucariaceae NE Australia
Agave americana Agavaceae E Mexico
Agave americana cv. Marginata Agavaceae
Agave americana cv. Medio-picta Agavaceae
Agave americana cv. Medio-picta alba Agavaceae
Agave americana cv. Striata Agavaceae
Agave atrovirens Agavaceae Mexico(Oaxaca)
Agave attenuata Agavaceae Mexico
Agave attenuata cv. Boutin Blue Agavaceae
Agave attenuata v. variegata Agavaceae
Agave bracteosa Agavaceae NE Mexico
Agave celsii Agavaceae Mexico(Nuevo Leon)
Agave colimana Agavaceae Mexico(Colima, Jalisco)
Agave colorata Agavaceae Mexico(Sonora)
Agave cupreata Agavaceae Mexico(Guerrero, Michoacán)
Agave cv. Blue Flame Agavaceae
Agave cv. Mr. Ripple Agavaceae Mexico
Agave dasylirioides Agavaceae Mexico
Agave desmetiana v. aureomarginata Agavaceae Mexico
Agave ferox Agavaceae
Agave filifera Agavaceae E Mexico
Agave filifera cv. Compacta Agavaceae
Agave franzosinii Agavaceae Mexico
Agave gentryi cv. Jaws Agavaceae
Agave gigantensis Agavaceae Baja California
Agave guiengola Agavaceae Mexico(Oaxaca)
Agave gypsophila Agavaceae Mexico(Guerrero)
Agave horrida Agavaceae Mexico(Morelos)
Agave isthmensis Agavaceae S Mexico
Agave karatto Agavaceae West Indies
Agave lophantha Agavaceae Texas to Mexico(Tamaulipas)
Agave macroacantha Agavaceae Mexico
Agave maximiliana v. katharinae Agavaceae Mexico
Agave montana Agavaceae NE Mexico
Agave multifilifera Agavaceae Mexico(Sonora)
Agave murpheyi Agavaceae Cen Arizona to Mexico(Sonora)
Agave murpheyi cv. Engard Agavaceae
Agave nizandensis Agavaceae Mexico(Oaxaca)
Agave ocahui Agavaceae Mexico(Sonora)
Agave ornithobroma Agavaceae Mexico(Sinaloa)
Agave pachycentra Agavaceae Mexico to El Salvador
Agave parryi Agavaceae N Arizona to Mexico
Agave parryi v. huachucensis Agavaceae US(Arizona), Mexico(Sonora)
Agave parryi v. truncata Agavaceae Mexico(Durango, Zacatecas)
Agave pendula Agavaceae Mexico
Agave potatorum Agavaceae Mexico
Agave pumila Agavaceae Mexico
Agave pygmae Agavaceae Mexico(Chiapas)
Agave schottii Agavaceae SW U.S. to Mexico
Agave sisalana cv. Variegata Agavaceae
Agave sisalana v. armata Agavaceae Mexico
Agave sobria Agavaceae Baja California
Agave sp. Agavaceae
Agave stricta Agavaceae Mexico
Agave tenuifolia Agavaceae Mexico
Agave tequilana cv. Variegata Agavaceae
Agave titanota Agavaceae Mexico
Agave toumeyana ssp. toumeyana Agavaceae SW United States
Agave victoriae-reginae Agavaceae Mexico
Agave vilmoriniana Agavaceae Mexico
Agave wendtii Agavaceae Mexico
Agave xylonacantha Agavaceae Mexico
Aglaomorpha heraclea Polypodiaceae Sumatra to New Guinea
Aglaonaria robertsii cv. Santa Rosa Polypodiaceae
Agonis flexuosa Myrtaceae W Australia
Ajuga cv. Black Scallop Lamiaceae
Akebia quinata Lardizabalaceae China, Korea, Japan
Albizia sp. Mimosaceae
Albuca batteniana Hyacinthaceae South Africa
Albuca canadensis Hyacinthaceae South Africa
Alcantarea imperialis Bromeliaceae Brazil
Alcea rosea Malvaceae
Alectryon coriaceus Sapindaceae Australia
Allium unifolium Amaryllidaceae United States
Allocasuarina torulosa Casuarinaceae E Australia
Alluaudia dumosa Didiereaceae Madagascar
Alluaudia humbertii Didiereaceae Magadascar
Alluaudia procera Didiereaceae Madagascar
Alluaudia procera Didiereaceae S & SW Madagascar
Alluaudia sp. Didiereaceae Madagascar
Alocasia odora Araceae Asia
Aloe aculeata Asphodelaceae S. Africa(N.Prov.), Zimbabwe
Aloe aculeata Asphodelaceae Zimbabwe
Aloe acutissima Asphodelaceae Cen Madagascar
Aloe affinis Asphodelaceae South Africa
Aloe africana Asphodelaceae South Africa
Aloe africana Asphodelaceae South Africa(E. Cape Province)
Aloe alooides Asphodelaceae South Africa
Aloe ammophila Asphodelaceae South Africa
Aloe amudatensis Asphodelaceae Uganda
Aloe angelica Asphodelaceae South Africa
Aloe arborescens Asphodelaceae South Africa
Aloe arborescens (variegated) Asphodelaceae
Aloe arborescens x ferox Asphodelaceae
Aloe arborescens x wickensii Asphodelaceae
Aloe arenicola Asphodelaceae South Africa
Aloe aristata Asphodelaceae South Africa
Aloe barbadensis Asphodelaceae Saudi Arabia
Aloe barberae Asphodelaceae Mozambique
Aloe barberae Asphodelaceae S. Africa, Mozambique, Swaz.
Aloe barberae Asphodelaceae S. Africa, Mozambizue, Swaz.
Aloe barberae x dichotoma Asphodelaceae
Aloe betsileensis Asphodelaceae Madagascar
Aloe branddraaiensis Asphodelaceae South Africa(Mpumalanga)
Aloe brevifolia Asphodelaceae South Africa(W. Cape Province)
Aloe broomii Asphodelaceae South Africa
Aloe buhrii Asphodelaceae South Africa(N. Cape Province)
Aloe bulbillifera Asphodelaceae Madagascar
Aloe burgersfortensis Asphodelaceae South Africa(Mpumalanga)
Aloe calcairophila Asphodelaceae Madagascar
Aloe cameronii Asphodelaceae South Africa
Aloe cameronii x arborescens Asphodelaceae
Aloe camperi Asphodelaceae Ethiopia
Aloe candelabrum Asphodelaceae South Africa(KwaZulu-Natal)
Aloe capitata v. capitata Asphodelaceae Cen Madagascar
Aloe capitata v. cipolinicola Asphodelaceae Cen Madagascar
Aloe castanea Asphodelaceae South Africa(Northern Prov.)
Aloe chabaudii Asphodelaceae South Africa
Aloe chabaudii v. verekeri Asphodelaceae South Africa
Aloe ciliaris Asphodelaceae South Africa(E. Cape Province)
Aloe classenii Asphodelaceae Kenya
Aloe compressa v. rugosquamosa Asphodelaceae Cen Madagascar
Aloe comptonii Asphodelaceae South Africa
Aloe confusa Asphodelaceae Tanzania
Aloe congolense Asphodelaceae Kenya
Aloe conifera Asphodelaceae Cen Madagascar
Aloe cryptopoda Asphodelaceae South Africa(Northern Prov.)
Aloe cv. Lizard Lips Asphodelaceae
Aloe cv. Olympic Star Asphodelaceae
Aloe cv. Pink Perfection Asphodelaceae
Aloe cv. Quicksilver Asphodelaceae
Aloe cv. Rooikappie Asphodelaceae
Aloe cv. Sparkling Burgundy Asphodelaceae
Aloe cyrtophylla Asphodelaceae Madagascar
Aloe davyana Asphodelaceae South Africa
Aloe dawei Asphodelaceae Uganda
Aloe decaryi Asphodelaceae Madagascar
Aloe deltoideodonta Asphodelaceae Madagascar
Aloe deltoideodonta v. nova Asphodelaceae Madagascar
Aloe descoingsii Asphodelaceae
Aloe descoingsii Asphodelaceae Madagascar
Aloe dichotoma Asphodelaceae South Africa
Aloe dichotoma Asphodelaceae South Africa(N. Cape Province)
Aloe diolii Asphodelaceae Sudan
Aloe distans Asphodelaceae South Africa(W. Cape Province)
Aloe divaricata Asphodelaceae Madagascar
Aloe dolomitica Asphodelaceae South Africa(Northern Prov.)
Aloe dorotheae Asphodelaceae Tanzania
Aloe dumetorum Asphodelaceae Kenya
Aloe elgonica Asphodelaceae Kenya
Aloe excelsa Asphodelaceae Africa
Aloe excelsa Asphodelaceae SW Africa
Aloe ferox Asphodelaceae
Aloe ferox Asphodelaceae South Africa
Aloe ferox x arborescens Asphodelaceae
Aloe fievettii Asphodelaceae Madagascar
Aloe flexilifolia Asphodelaceae Tanzania
Aloe forbesii Asphodelaceae Yemen(Socotra)
Aloe fragilis Asphodelaceae Madagascar
Aloe framesii Asphodelaceae South Africa
Aloe gerstneri Asphodelaceae South Africa(KwaZulu-Natal)
Aloe globuligemma Asphodelaceae South Africa, Zimbabwe
Aloe gracilis Asphodelaceae South Africa(E. Cape Province)
Aloe grandidentata Asphodelaceae South Africa
Aloe greenii Asphodelaceae South Africa(KwaZulu-Natal)
Aloe haggeherensis Asphodelaceae Yemen
Aloe harlana Asphodelaceae Ethiopia
Aloe hemmingii Asphodelaceae Somalia
Aloe humilis Asphodelaceae South Africa
Aloe hybrid Asphodelaceae
Aloe ibitiensis Asphodelaceae Cen Madagascar
Aloe intermedia Asphodelaceae
Aloe jacksonii Asphodelaceae Ethiopia
Aloe jucunda Asphodelaceae Somalia
Aloe juvenna Asphodelaceae Kenya
Aloe karasbergensis Asphodelaceae South Africa
Aloe kedongensis Asphodelaceae South Africa
Aloe lineata Asphodelaceae South Africa
Aloe lutescens Asphodelaceae South Africa(Northern Prov.)
Aloe macrocarpa Asphodelaceae South Africa
Aloe macroclada Asphodelaceae Cen Madagascar
Aloe madecassa Asphodelaceae Cen Madagascar
Aloe marlothii Asphodelaceae South Africa
Aloe marlothii Asphodelaceae SW Africa
Aloe marlothii hybrid Asphodelaceae
Aloe mawii Asphodelaceae Malawi
Aloe mcloughlinii v. Asphodelaceae Ethiopia
Aloe melanacantha Asphodelaceae S Namibia to South Africa
Aloe microstigma Asphodelaceae South Africa
Aloe mitriformis Asphodelaceae South Africa(W. Cape Province)
Aloe mubendiensis Asphodelaceae Uganda
Aloe mudenensis Asphodelaceae South Africa(KwaZulu-Natal)
Aloe mutabilis Asphodelaceae South Africa
Aloe ngobitensis Asphodelaceae Kenya
Aloe officinalis Asphodelaceae Saudi Arabia
Aloe ortholopha Asphodelaceae Zimbabwe
Aloe parvibracteata Asphodelaceae South Africa
Aloe parvula Asphodelaceae Madagascar
Aloe pearsonii Asphodelaceae S. Africa(N. Cape Province)
Aloe peckii Asphodelaceae Somalia
Aloe petricola Asphodelaceae South Africa(Mpumalanga)
Aloe plicatilis Asphodelaceae South Africa(W. Cape Province)
Aloe pluridens Asphodelaceae South Africa
Aloe polyphylla Asphodelaceae Lesotho
Aloe porphyrostachys Asphodelaceae Saudi Arabia
Aloe powysiorum Asphodelaceae Kenya
Aloe pretoriensis Asphodelaceae S Zimbabwe to South Africa
Aloe prinslooi Asphodelaceae South Africa(KwaZulu-Natal)
Aloe ramosissima Asphodelaceae Namibia,South Africa(N. Cape)
Aloe ramosissima Asphodelaceae South Africa
Aloe rauhii Asphodelaceae Madagascar
Aloe reitzii Asphodelaceae South Africa
Aloe rubroviolacea Asphodelaceae Arabia
Aloe rupestris Asphodelaceae S Mozambique, S. Africa
Aloe rupestris Asphodelaceae Swaziland
Aloe sabaea Asphodelaceae Saudi Arabia
Aloe saponaria Asphodelaceae South Africa
Aloe schomeri Asphodelaceae Madagascar
Aloe scobinifolia Asphodelaceae Somalia
Aloe scorpioides Asphodelaceae Angola
Aloe secundiflora Asphodelaceae E Africa to Sudan
Aloe sessiliflora Asphodelaceae South Africa
Aloe sinkatana Asphodelaceae Sudan
Aloe somaliensis Asphodelaceae Somalia
Aloe somaliensis v. marmorata Asphodelaceae Somalia
Aloe sp. Asphodelaceae
Aloe sp. nov. Asphodelaceae
Aloe speciosa Asphodelaceae South Africa
Aloe spectabilis Asphodelaceae South Africa
Aloe spinosissima Asphodelaceae South Africa
Aloe squarrosa Asphodelaceae Yemen(Socotra)
Aloe striata Asphodelaceae SW Africa
Aloe striata ssp. cv. karasbergensis Asphodelaceae South Africa, S Namibia
Aloe striatula Asphodelaceae S. Africa(E. Cape Prov.)
Aloe succotrina Asphodelaceae South Africa(W. Cape Province)
Aloe suprafoliata Asphodelaceae Swaziland, South Africa
Aloe suzannae Asphodelaceae Madagascar
Aloe swynnertonii Asphodelaceae Zimbabwe
Aloe swynnertonii Asphodelaceae Zimbabwe, Mozambique
Aloe tenuior Asphodelaceae South Africa
Aloe thraskii Asphodelaceae South Africa
Aloe tomentosa Asphodelaceae Saudi Arabia, Yemen, Somalia
Aloe tororoana Asphodelaceae Uganda
Aloe vanbalenii Asphodelaceae South Africa
Aloe vaombe Asphodelaceae South and Southwest Madagascar
Aloe vaotsanda Asphodelaceae Madagascar
Aloe viguieri Asphodelaceae SW Madagascar
Aloe virens Asphodelaceae South Africa
Aloe wickensii Asphodelaceae South Africa
Aloe x calcairophila Asphodelaceae
Aloe x principis Asphodelaceae South Africa
Aloe yavellana Asphodelaceae Ethiopia
Aloe zebrina Asphodelaceae SW Africa
Alpinia pricei Zingiberaceae Taiwan
Alpinia speciosa Zingiberaceae SE Asia
Alpinia zerumbet cv. Variegata Zingiberaceae
Alstroemeria cv. Tall Pink Alstroemeriaceae
Alyogyne huegelii Malvaceae Australia
Alyogyne huegelii cv. Santa Cruz Malvaceae Australia
Amaryllis belladonna Amaryllidaceae South Africa
Amorphophallus konjac Araceae S. China
Anacampseros telephiastrum Portulacaceae South Africa
Anagallis arvensis Primulaceae
Ananas bracteatus v. striatus Bromeliaceae Brazil
Anemia phyllitidis Schizaeaceae Tropical America
Angophora costata Myrtaceae Australia
Angraecum suberbum Orchidaceae Madagascar
Anigozanthos cv. Bush Tango Haemodoraceae
Anigozanthos flavidus Haemodoraceae W Australia
Anigozanthos flavidus cv. Pink Haemodoraceae
Anthurium berriozabalense Araceae S Mexico
Anthurium cf. podophyllum Araceae Mexico
Anthurium hookeri Araceae Guyana, West Indies
Anthurium podophyllum Araceae Mexico
Anthurium polyphytum Araceae
Anthurium scandens Araceae Mexico, C & S Amer, W. Indies
Anthurium sp. Araceae
Anthurium spectabile Araceae Costa Rica
Anthurium x podophyllum Araceae
Aponogeton distachyus Aponogetonaceae South Africa
Aporocactus flagelliformis Cactaceae Mexico
Aptenia cordifolia Aizoaceae South Africa
Arachniodes davalliformis Dryopteridaceae
Arachniodes standishii Dryopteridaceae Japan, Korea
Araucaria araucana Araucariaceae Chile
Araucaria bidwillii Araucariaceae Australia
Araucaria cunninghamii Araucariaceae E Australia
Araucaria heterophylla Araucariaceae Australia(Norfolk Is.)
Araucaria rulei Araucariaceae New Caledonia
Archontophoenix alexandrae Arecaceae Australia(Queensland)
Archontophoenix cunninghamiana Arecaceae SE Australia
Archontophoenix sp. nov. Arecaceae E Australia
Arctostaphylos cv. Howard McMinn Ericaceae
Arctostaphylos densiflora cv. Howard McMinn ericacaea California
Arctotis acaulis cv. Big Magenta Asteraceae South Africa
Arenga engleri Arecaceae Taiwan, Japan(Ryukyu Is.)
Arenga pinnata Arecaceae
Arenga pinnata Arecaceae Tropical Asia
Arequipa hazalae Cactaceae Peru
Aristea ecklonii Iridaceae Africa
Aristolochia elegans Aristolochiaceae Brazil
Aristolochia fimbriata Aristolochiaceae Argentina, Paraguay, Brazil
Aristolochia gigantea Aristolochiaceae Brazil
Armatocereus cartwrightianus Cactaceae S Ecuador, N Peru
Armatocereus churinensis Cactaceae Peru
Armatocereus godingianus Cactaceae Ecuador
Armatocereus mataranus Cactaceae Ecuador, Peru
Armatocereus matucanensis Cactaceae Ecuador, Peru
Armatocereus sp. Cactaceae
Armeria maritima Plumbaginaceae Worldwide
Artemisia ludoviciana cv. Silver King Asteraceae
Artemisia stellerana Asteraceae
Arthropteris monocarpa Oleandraceae Tropical Africa
Arthropteris tenella Oleandraceae Australia, New Zealand
Asclepias cancellata Asclepiadaceae South Africa
Asclepias curassavica Asclepiadacaea
Asclepias curassavica cv. Silky Scarlet Asclepiadaceae
Asclepias fascicularis Asclepiadacaea W. North America
Asclepias fascicularis Asclepiadaceae NW U.S.
Asclepias incarnata cv. Soulmate Asclepiadaceae
Asclepias speciosa Asclepiadaceae W North America
Asclepias tuberosa Asclepiadaceae Eastern United States
Asclepias tuberosa cv. Gay Butterflies Asclepiadaceae
Aspidistra elatior Convallariaceae Japan
Aspidistra elatior cv. Variegata Convallariaceae
Aspidistra sp. Convallariaceae
Asplenium antiguum Polypodiaceae S Japan
Asplenium bulbiferum Polypodiaceae SE Australia
Asplenium daucifolium Polypodiaceae Mauritius, Madagascar
Asplenium goudeyi Aspleniaceae Australia
Asplenium nidus Polypodiaceae Asian Tropics, Polynesia
Asplenium nidus cv. Lazana Polypodiaceae
Asplenium oblongifolium Aspleniaceae New Zealand
Asplenium surrogatum Aspleniaceae Lord Howe Island
Asplenium surrogatum Polypodiaceae Australia (Lord Howe Is.)
Astelia chathamica cv. Silver Spear Asteliaceae
Aster sp. Asteraceae
Asteriscus maritimas cv. Gold Coin Asteraceae
Astroloba deltoidea Asphodelaceae South Africa
Astrophytum asterias Cactaceae Texas, Mexico
Astrophytum cv. Lotusland Cactaceae
Astrophytum myriostigma Cactaceae Mexico
Astrophytum ornatum Cactaceae Cen Mexico
Athyrium felix-femina cv. Victoria Dryopteridaceae Boreal
Athyrium filix-femina cv. Cristata Dryopteridaceae
Athyrium nipponicum cv. Pictum Dryopteridaceae China and Japan
Atriplex canescens Chenopodiacea North America
Atriplex canescens Chenopodiaceae USA
Atriplex lentiformis Chenopodiaceae SW United States, N Mexico
Atriplex lentiformis Chenopodiaceae Western US
Atriplex lentiformis ssp. breweri Chenopodiaceae SW United States to NW Mexico
Aucuba japonica Cornaceae Himalayas to Japan
Aucuba japonica cv. Variegata Cornaceae
Austrocylindropuntia subulata Cactaceae Peru, Bolivia, Argentina
Austrocylindropuntia vestita Cactaceae Bolivia, N Argentina
Azara integrifolia Flacourtiaceae Chile
Azara sp. Flacourtiaceae
Azorina vidalii Campanulaceae Portugal