Taxonomic Listing of genera and families with an ICRA
Alphabetical List: A


Reference under EGF refers to volume and page of the entry in the six-volume European Garden Flora
published by Cambridge University Press, UK (1984-2000)

Taxonomic List EGF ICRA
Abelia R. Br. 6:431 AMERICAN PUBLIC GARDENS ASSOCIATION
Abeliophyllum Nakai 5:588 AMERICAN PUBLIC GARDENS ASSOCIATION
Abies Mill. 1:88 ROYAL HORTICULTURAL SOCIETY (RHS) - CONIFERS
Abroma Jacq. 5:235 AMERICAN PUBLIC GARDENS ASSOCIATION
Abromeitiella Mez = Deuterocohnia Mez - BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Abrophyllum Hook. f. 4:312 AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Abrus Adans. 4:486 AMERICAN PUBLIC GARDENS ASSOCIATION
Abutilon Mill. 5:221 AMERICAN PUBLIC GARDENS ASSOCIATION
Acacia Mill. 4:466 AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Acalypha L. - AMERICAN PUBLIC GARDENS ASSOCIATION
Acanthocarpus Lehm. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Acanthocladium F. Muell. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Acanthonema Hook. f. = Streptocarpus Lindl. - THE GESNERIAD SOCIETY, INC.
Acanthopanax (Decne. & Planch.) Witte = Eleutherococcus Maxim. - AMERICAN PUBLIC GARDENS ASSOCIATION
Acanthostachys Klotzsch 2:19 BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Acca O. Berg 5:306 AMERICAN PUBLIC GARDENS ASSOCIATION
Acer L. 5:132 INTERNATIONAL MAPLE SOCIETY
Achimenes Pers. 6:375 THE GESNERIAD SOCIETY, INC.
Achnophora F. Muell. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Acidanthera Hochst. = Gladiolus L. - ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Acidonia L. A. S. Johnson & B. G. Briggs - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Acidosasa C. D. Chu & C. S. Chao Actinocladum McClure Ampelocalamus S. L. Chen, T. H. Wen & G. Y. Sheng Anomochloa Brongn. - INTERNATIONAL CULTIVAR REGISTRATION CENTER FOR BAMBOOS (POACEAE, TRIBE BAMBUSEAE)
Acioa Aubl. - AMERICAN PUBLIC GARDENS ASSOCIATION
Acmena DC. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Acmopyle Pilg. - ROYAL HORTICULTURAL SOCIETY (RHS) - CONIFERS
Acomis F. Muell. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Acradenia Kippist 5:105 AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Acridocarpus Gill. & A. Rich. 5:120 AMERICAN PUBLIC GARDENS ASSOCIATION
Acrocarpus Wight & Arn. - AMERICAN PUBLIC GARDENS ASSOCIATION
Acrophyllum Benth. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Acropogon Schlecht. - AMERICAN PUBLIC GARDENS ASSOCIATION
Acrotriche R. Br. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Actinidia Lindl. 4:26 HORTRESEARCH (NEW ZEALAND)
Actinobole Endl. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Actinodaphne Nees - AMERICAN PUBLIC GARDENS ASSOCIATION
Actinodium Schauer - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Actinostrobus Miq. - ROYAL HORTICULTURAL SOCIETY (RHS) - CONIFERS
Actinotus Labill. 5:394 AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Actites Lander - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Adansonia L. 5:230 AMERICAN PUBLIC GARDENS ASSOCIATION
Adenanthera L. 4:464 AMERICAN PUBLIC GARDENS ASSOCIATION
Adenanthos Labill. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Adenocarpus DC. 4:549 AMERICAN PUBLIC GARDENS ASSOCIATION
Adenostoma Hook. & Arn. 4:386 AMERICAN PUBLIC GARDENS ASSOCIATION
Adesmia DC. 4:501 AMERICAN PUBLIC GARDENS ASSOCIATION
Adhatoda Mill. = Justicia L. - AMERICAN PUBLIC GARDENS ASSOCIATION
Adriana Gaudich. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Aechmea Ruiz & Pav. 2:20 BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Aechopsis D. Butcher (Aechmea Ruiz & Pav. × Canistropsis (Mez) Leme) - BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Aegialitis R. Br. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Aegle Corrêa 5:115 AMERICAN PUBLIC GARDENS ASSOCIATION
Aeschynanthus Jack 6:399 THE GESNERIAD SOCIETY, INC.
Aesculus L. 5:155 AMERICAN PUBLIC GARDENS ASSOCIATION
Aetoxicon Ruiz & Pav. - AMERICAN PUBLIC GARDENS ASSOCIATION
Afraegle (Swingle) Engl. - AMERICAN PUBLIC GARDENS ASSOCIATION
Afrocarpus (J. Buchholz & N. E. Gray) C. N. Page - ROYAL HORTICULTURAL SOCIETY (RHS) - CONIFERS
Afzelia Sm. - AMERICAN PUBLIC GARDENS ASSOCIATION
Agalmyla Blume - THE GESNERIAD SOCIETY, INC.
Agapetes D. Don ex G. Don 5:503 AMERICAN PUBLIC GARDENS ASSOCIATION
Agarista D. Don ex G. Don 5:491 AMERICAN PUBLIC GARDENS ASSOCIATION
Agastachys R. Br. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Agathaea Cass. = Felicia Cass. - AMERICAN PUBLIC GARDENS ASSOCIATION
Agathis Salisb. 1:72 ROYAL HORTICULTURAL SOCIETY (RHS) - CONIFERS
Agathosma Willd. - AMERICAN PUBLIC GARDENS ASSOCIATION
Agave L. 1:278 AMERICAN PUBLIC GARDENS ASSOCIATION
Aglaia Lour. - AMERICAN PUBLIC GARDENS ASSOCIATION
Aglaodorum Schott - INTERNATIONAL AROID SOCIETY (I.A.S.)
Aglaonema Schott 2:94 INTERNATIONAL AROID SOCIETY (I.A.S.)
Agonis (DC.) Sweet 5:317 AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Agrostocrinum F. Muell. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Ailanthus Desf. 5:116 AMERICAN PUBLIC GARDENS ASSOCIATION
Ajania Poljak. 6:601 AMERICAN PUBLIC GARDENS ASSOCIATION
Akania Hook. f. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Akaniaceae Stapf - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Akebia Decne. 3:397 AMERICAN PUBLIC GARDENS ASSOCIATION
Alangium Lam. 5:360 AMERICAN PUBLIC GARDENS ASSOCIATION
Alania Endl. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Albizia Durazz. 4:468 AMERICAN PUBLIC GARDENS ASSOCIATION
Albuca L. 1:219 ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Alcantarea (E. Morren ex Mez) Harms - BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Aldrovanda L. 4:87 INTERNATIONAL CARNIVOROUS PLANT SOCIETY (I.C.P.S.)
Alectryon Gaertn. - AMERICAN PUBLIC GARDENS ASSOCIATION
Aleurites J. R. Forst. & G. Forst. 5:76 AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Alexgeorgea Carlquist - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Alghagi Gagnebin - AMERICAN PUBLIC GARDENS ASSOCIATION
Alibertia Rich. 6:91 AMERICAN PUBLIC GARDENS ASSOCIATION
Allanblackia Oliv. ex Benth. & Hook. f. - AMERICAN PUBLIC GARDENS ASSOCIATION
Allium L. , excluding culinary taxa 1:233 ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Allocasuarina L. A. S. Johnson - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Allocheilos W. T. Wang - THE GESNERIAD SOCIETY, INC.
Alloplectus Mart. - THE GESNERIAD SOCIETY, INC.
Alloschemone Schott - INTERNATIONAL AROID SOCIETY (I.A.S.)
Allostigma W. T. Wang - THE GESNERIAD SOCIETY, INC.
Allosyncarpia S. T. Blake - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Alloxylon P. H. Weston & Crisp - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Alluaudia Humbert & Choux 3:301 AMERICAN PUBLIC GARDENS ASSOCIATION
Alniphyllum Matsum. - AMERICAN PUBLIC GARDENS ASSOCIATION
Alnus Mill. 3:46 AMERICAN PUBLIC GARDENS ASSOCIATION
Alocasia (Schott) G. Don 2:101 INTERNATIONAL AROID SOCIETY (I.A.S.)
Alophia Herb. 1:360 ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Aloysia Palau 6:153 AMERICAN PUBLIC GARDENS ASSOCIATION
Alrawia (Wendelbo) K. Persson & Wendelbo - ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Alsobia Hanst. 6:383 THE GESNERIAD SOCIETY, INC.
Alstroemeria L. 1:208 ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Altingia Noronha - AMERICAN PUBLIC GARDENS ASSOCIATION
Alyogyne Alef. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Amana Honda = Tulipa L. - ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Amarcrinum Coutts (Amaryllis L. × Crinum L.) - ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Amarine Sealy (Amaryllis L. × Nerine Herb.) - ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Amarygia Cif. & Giacom. (Amaryllis L. × Brunsvigia Heist.) - ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Amaryllis L. 1:300 ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Amasonia L. f. 6:157 AMERICAN PUBLIC GARDENS ASSOCIATION
Amblygonocarpus Harms - AMERICAN PUBLIC GARDENS ASSOCIATION
Ambrosina Bassi - INTERNATIONAL AROID SOCIETY (I.A.S.)
Amelanchier Medik. 4:421 AMERICAN PUBLIC GARDENS ASSOCIATION
Amelasorbus Rehder (Amelanchia Medik. × Sorbus L.) 4:422 AMERICAN PUBLIC GARDENS ASSOCIATION
Amentotaxus Pilg. - ROYAL HORTICULTURAL SOCIETY (RHS) - CONIFERS
Amherstia Wall. 4:479 AMERICAN PUBLIC GARDENS ASSOCIATION
Amicia Kunth 4:500 AMERICAN PUBLIC GARDENS ASSOCIATION
Ammobium R. Br. ex Sims 6:556 AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Ammocharis Herb. - ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Ammodendron Fisch. ex DC. - AMERICAN PUBLIC GARDENS ASSOCIATION
Amomyrtus Kausel 5:306 AMERICAN PUBLIC GARDENS ASSOCIATION
Amoreuxia Mocino & Sesse ex DC. 5:270 AMERICAN PUBLIC GARDENS ASSOCIATION
Amorpha L. 4:500 AMERICAN PUBLIC GARDENS ASSOCIATION
Amorphophallus Blume ex Decne. 2:89 INTERNATIONAL AROID SOCIETY (I.A.S.)
Ampelopsis Michx. 5:201 AMERICAN PUBLIC GARDENS ASSOCIATION
Amperea A. Juss. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Amphibromus Nees - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Amphipogon R. Br. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Amphisiphon W. F. Barker - ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Amydrium Schott - INTERNATIONAL AROID SOCIETY (I.A.S.)
Amygdalus L. = Prunus L. - AMERICAN PUBLIC GARDENS ASSOCIATION
Amyris P. Browne - AMERICAN PUBLIC GARDENS ASSOCIATION
Anacardium L. 5:130 AMERICAN PUBLIC GARDENS ASSOCIATION
Anadenanthera Speg. - AMERICAN PUBLIC GARDENS ASSOCIATION
Anadendrum Schott - INTERNATIONAL AROID SOCIETY (I.A.S.)
Anagelia E. L. Sm. (Ananas Mill. × Neoregelia L. B. Sm.) - BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Anagyris L. 4:532 AMERICAN PUBLIC GARDENS ASSOCIATION
Anamea anon. (Aechmea Ruiz & Pav. × Ananas Mill.) - BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Anamirta Colebr. 3:399 AMERICAN PUBLIC GARDENS ASSOCIATION
Ananananas D. A. Beadle (Ananas Mill. × Pseudananas (Hassl.) Harms) - BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Ananas Mill. 2:25 BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Anaphyllopsis A. Hay - INTERNATIONAL AROID SOCIETY (I.A.S.)
Anaphyllum Schott - INTERNATIONAL AROID SOCIETY (I.A.S.)
Anarthria R. Br. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Ancana F. Muell. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Anchomanes Schott - INTERNATIONAL AROID SOCIETY (I.A.S.)
Ancistrachne S. T. Blake - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Ancrumia Harv. ex Baker - ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Ancylostemon Craib - THE GESNERIAD SOCIETY, INC.
Andersonia R. Br. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Andrachne L. 5:75 AMERICAN PUBLIC GARDENS ASSOCIATION
Androcymbium Willd. - ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Androlaechmea Dutrie ex C. Chev. (Aechmea Ruiz & Pav. × Androlepis Brongn. ex Houllet) - BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Androlepis Brongn. ex Houllet - BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Andromeda L. 5:489 HEATHER SOCIETY
Androsiphon Schltr. - ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Anemone L. , bulbous species only 3:349 ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Anemopaegma Mart. ex Meisn. 6:350 AMERICAN PUBLIC GARDENS ASSOCIATION
Anetanthus Hiern ex Benth. & Hook. f. - THE GESNERIAD SOCIETY, INC.
Angianthus J. C. Wendl. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Angophora Cav. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Angostura Roem. & Schult. - AMERICAN PUBLIC GARDENS ASSOCIATION
Aniba Aubl. - AMERICAN PUBLIC GARDENS ASSOCIATION
Anigozanthos Labill. 1:290 AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Anisoptera Korth. - AMERICAN PUBLIC GARDENS ASSOCIATION
Anna Pellegr. - THE GESNERIAD SOCIETY, INC.
Annona L. 3:315 AMERICAN PUBLIC GARDENS ASSOCIATION
Anodiscus Benth. - THE GESNERIAD SOCIETY, INC.
Anodopetalum A. Cunn. ex Endl. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Anogeissus (DC.) Guill. & Perr. 5:339 AMERICAN PUBLIC GARDENS ASSOCIATION
Anoiganthus Baker = Cyrtanthus Aiton - ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Anomalesia N. E. Br. = Gladiolus L. 1:392 ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Anomatheca Ker Gawl. 1:383 ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Anopterus Labill. 4:318 AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Anopyxis (Pierre) Pierre ex Engl. 5:183 AMERICAN PUBLIC GARDENS ASSOCIATION
Anthocercis Labill. 6:267 AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Antholyza L. - ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Anthotium R. Br. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Anthurium Schott 2:80 INTERNATIONAL AROID SOCIETY (I.A.S.)
Anthyllis L. 4:514 AMERICAN PUBLIC GARDENS ASSOCIATION
Antiaris Lesch. - AMERICAN PUBLIC GARDENS ASSOCIATION
Anubias Schott 2:94 INTERNATIONAL AROID SOCIETY (I.A.S.)
Aotus Sm. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Apatophyllum McGill - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Aphanamixis Blume - AMERICAN PUBLIC GARDENS ASSOCIATION
Aphananthe Planch. - AMERICAN PUBLIC GARDENS ASSOCIATION
Aphanopetalum Endl. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Aphelia R. Br. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Apoclada McClure - INTERNATIONAL CULTIVAR REGISTRATION CENTER FOR BAMBOOS (POACEAE, TRIBE BAMBUSEAE)
Apodytes E. Mey. ex Arn. 5:183 AMERICAN PUBLIC GARDENS ASSOCIATION
Apollonias Nees - AMERICAN PUBLIC GARDENS ASSOCIATION
Apophyllum F. Muell. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
×Aporberocereus Rowley (Aporocactus Lem. (=Disocactus Lindl.) × Weberocereus Britton & Rose) = Disberocereus E. Meier - EPIPHYLLUM SOCIETY OF AMERICA (E.S.A.)
×Aporepiphyllum Rowley (Aporocactus Lem. (=Disocactus Lindl.) × Epiphyllum Haw.) = Disophyllum Johnson - EPIPHYLLUM SOCIETY OF AMERICA (E.S.A.)
Aporocactus Lem. = Disocactus Lindl. 3:214 EPIPHYLLUM SOCIETY OF AMERICA (E.S.A.)
×Aporochia Rowley (Aporocactus Lem. (=Disocactus Lindl.) × Nopalxochia Britton & Rose (=Disocactus Lindl.) = Disocactus Lindl. - EPIPHYLLUM SOCIETY OF AMERICA (E.S.A.)
×Aporodisocactus Knebel (Aporocactus Lem. (=Disocactus Lindl.) × Disocactus Lindl.) = Disocactus Lindl. - EPIPHYLLUM SOCIETY OF AMERICA (E.S.A.)
×Aporoheliocereus Knebel (Aporocactus Lem. (=Disocactus Lindl.) × Heliocereus (A. Berger) Britton & Rose (=Disocactus Lindl.)) = Disocactus Lindl. - EPIPHYLLUM SOCIETY OF AMERICA (E.S.A.)
×Aporoselenicereus Fearn (Aporocactus Lem. (=Disocactus Lindl.) × Selenicereus (A. Berger) Britton & Rose) = Disoselenicereus E. Meier - EPIPHYLLUM SOCIETY OF AMERICA (E.S.A.)
Apuleia Mart. - AMERICAN PUBLIC GARDENS ASSOCIATION
Aquilaria Lam. - AMERICAN PUBLIC GARDENS ASSOCIATION
Arabidella (F. Muell.) O. E. Schulz - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Araceae Adans. , excluding Calla L. and Zantedeschia Spreng. - INTERNATIONAL AROID SOCIETY (I.A.S.)
Araeococcus Brongn. - BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Aralia L. 5:370 AMERICAN PUBLIC GARDENS ASSOCIATION
Araucaria Juss. 1:72 ROYAL HORTICULTURAL SOCIETY (RHS) - CONIFERS
Araucariaceae Henkel & W. Hochst. - ROYAL HORTICULTURAL SOCIETY (RHS) - CONIFERS
Arberella Soderstr. & C. E. Calderon Arthrostylidium Rupr. - INTERNATIONAL CULTIVAR REGISTRATION CENTER FOR BAMBOOS (POACEAE, TRIBE BAMBUSEAE)
Arbutus L. 5:485 AMERICAN PUBLIC GARDENS ASSOCIATION
Arceuthobium M. Bieb. 3:121 AMERICAN PUBLIC GARDENS ASSOCIATION
Archeria Hook. f. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Archidendron F. Muell. - AMERICAN PUBLIC GARDENS ASSOCIATION
Arcterica Coville = Pieris D. Don - AMERICAN PUBLIC GARDENS ASSOCIATION
Arctostaphylos Adans. 5:486 AMERICAN PUBLIC GARDENS ASSOCIATION
Arctotis L. 6:546 AMERICAN PUBLIC GARDENS ASSOCIATION
Arctous (A. Gray) Nied. = Arctostaphylos Adans. - AMERICAN PUBLIC GARDENS ASSOCIATION
Ardisia Sw. 5:509 AMERICAN PUBLIC GARDENS ASSOCIATION
Aregelia Kuntze (nom. illegit.) = Nidularium Lem. - BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Argania Roem. & Schult. - AMERICAN PUBLIC GARDENS ASSOCIATION
Argyranthemum Webb 6:616 AMERICAN PUBLIC GARDENS ASSOCIATION
Argyrocytisus (Maire) Raynaud - AMERICAN PUBLIC GARDENS ASSOCIATION
Argyroglottis Turcz. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Argyrolobium Eckl. & Zeyh. - AMERICAN PUBLIC GARDENS ASSOCIATION
Aridarum Ridl. - INTERNATIONAL AROID SOCIETY (I.A.S.)
Ariopsis Nimmo - INTERNATIONAL AROID SOCIETY (I.A.S.)
Arisaema Mart. 2:107 INTERNATIONAL AROID SOCIETY (I.A.S.)
Arisarum Mill. 2:107 INTERNATIONAL AROID SOCIETY (I.A.S.)
Aristolochia L. 3:417 AMERICAN PUBLIC GARDENS ASSOCIATION
Aristotelia L'Hér. 5:204 AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Arnocrinum Endl. & Lehm. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Aromadendron Blume = Magnolia L. -
Aronia Medik. 4:423 AMERICAN PUBLIC GARDENS ASSOCIATION
Arophyton Jum. - INTERNATIONAL AROID SOCIETY (I.A.S.)
Artabotrys R. Br. 3:316 AMERICAN PUBLIC GARDENS ASSOCIATION
Artemisia L. , shrubby cultivars 6:601 AMERICAN PUBLIC GARDENS ASSOCIATION
Arthropodium R. Br. 1:132 AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Arthrostylis R. Br. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Artocarpus J. R. Forst. & G. Forst. 3:87 AMERICAN PUBLIC GARDENS ASSOCIATION
Arum L. 2:104 INTERNATIONAL AROID SOCIETY (I.A.S.)
Arundinaria Michaux - INTERNATIONAL CULTIVAR REGISTRATION CENTER FOR BAMBOOS (POACEAE, TRIBE BAMBUSEAE)
Ascyrum L. = Hypericum L. - AMERICAN PUBLIC GARDENS ASSOCIATION
Asimina Adans. 3:316 AMERICAN PUBLIC GARDENS ASSOCIATION
Aspidistra Ker Gawl. 1:250 AMERICAN PUBLIC GARDENS ASSOCIATION
Astartea DC. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Asteranthera Hanst. 6:393 THE GESNERIAD SOCIETY, INC.
Asterolasia F. Muell. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Asteromyrtus Schauer - AMERICAN PUBLIC GARDENS ASSOCIATION
Asterostigma Fisch. & C. A. Mey. - INTERNATIONAL AROID SOCIETY (I.A.S.)
Astilbe Buch.-Ham. ex D. Don 4:245 LAKELAND HORTICULTURAL SOCIETY
Astiria Lindl - AMERICAN PUBLIC GARDENS ASSOCIATION
Astrebla F. Muell. ex Benth. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Astroloba Uitew. - HAWORTHIA SOCIETY OF JAPAN
Astroloma R. Br. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Astrotricha DC. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Atalantia Corrêa - AMERICAN PUBLIC GARDENS ASSOCIATION
Atalaya Blume - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Atherosperma Labill. 3:319 AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Athertonia L. A. S. Johnson & B. G. Briggs - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Athrixia Ker Gawl. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Athroostachys Benth. - INTERNATIONAL CULTIVAR REGISTRATION CENTER FOR BAMBOOS (POACEAE, TRIBE BAMBUSEAE)
Athrotaxis D. Don 1:78 ROYAL HORTICULTURAL SOCIETY (RHS) - CONIFERS
Atkinsonia F. Muell. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Atractantha McClure - INTERNATIONAL CULTIVAR REGISTRATION CENTER FOR BAMBOOS (POACEAE, TRIBE BAMBUSEAE)
Atragene L. = Clematis L. - ROYAL HORTICULTURAL SOCIETY (RHS) - CLEMATIS
Atraphaxis L. 3:124 AMERICAN PUBLIC GARDENS ASSOCIATION
Atriplex L. 3:197 AMERICAN PUBLIC GARDENS ASSOCIATION
Atuna Raf. 4:463 AMERICAN PUBLIC GARDENS ASSOCIATION
Aucoumea Pierre - AMERICAN PUBLIC GARDENS ASSOCIATION
Aucuba Thunb. 5:366 AMERICAN PUBLIC GARDENS ASSOCIATION
Aulax P. J. Bergius 3:109 PROTEACEAE CULTIVAR REGISTRATION AUTHORITY, NATIONAL DEPARTMENT OF AGRICULTURE (SOUTH AFRICA)
Aulonemia Goudot - INTERNATIONAL CULTIVAR REGISTRATION CENTER FOR BAMBOOS (POACEAE, TRIBE BAMBUSEAE)
Austrobaileya C. T. White - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Austrobaileyaceae Croizat - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Austrocedrus Florin & Boutelje 1:79 ROYAL HORTICULTURAL SOCIETY (RHS) - CONIFERS
Austrodolichos Verdc. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Austromatthaea L. S. Sm. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Austromuellera C. T. White - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Austrotaxus Compton - ROYAL HORTICULTURAL SOCIETY (RHS) - CONIFERS
Ayensua L. B. Sm. - BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Azadirachta A. Juss. - AMERICAN PUBLIC GARDENS ASSOCIATION
Azalea L. = Rhododendron L. - ROYAL HORTICULTURAL SOCIETY (RHS) - RHODODENDRON
Azara Ruiz & Pav. - AMERICAN PUBLIC GARDENS ASSOCIATION
Azorina Feer 6:476 AMERICAN PUBLIC GARDENS ASSOCIATION

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