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


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
Ochagavia Phil. - BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Ochna Schreb. 4:28 AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Ochroma Sw. 5:230 AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Ochrosperma Trudgen - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Ocotea Aubl. - AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Oemleria Rchb. 4:462 AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Oerstedina Wiehler - THE GESNERIAD SOCIETY, INC.
Olax L. 3:119 AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Oldenburgia Less. - AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Olea L. 5:576 AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Olearia Moench 6:589 AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Oligarrhena R. Br. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Omphacomeria (Endl.) A. DC. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Omphalolappula Brand - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Oncinocalyx F. Muell. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Oncoba Forssk. - AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Oncostema Raf. = Scilla L. - ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Ondinea Hartog - INTERNATIONAL WATERLILY AND WATER GARDENING SOCIETY (I.W.G.S.) - NYMPHAEACEAE
Ongokea Pierre 3:119 AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Onixotis Raf. - ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Ononis L. 4:522 AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Onychosepalum Steud. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Opercularia Gaertn. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Opisthiolepis L. S. Sm. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Opithandra B. L. Burtt 6:398 THE GESNERIAD SOCIETY, INC.
Oplopanax (Torr. & A. Gray) Miq. 5:370 AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Oraniopsis (Becc.) S. Dransf. et al. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Orchadocarpa Ridl. - THE GESNERIAD SOCIETY, INC.
Orchidaceae Adans. - ROYAL HORTICULTURAL SOCIETY (RHS) - ORCHIDS
Oreocallis R. Br. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Oreocharis Benth. - THE GESNERIAD SOCIETY, INC.
Oreodendron C. T. White - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Oreoherzogia W. Vent. = Rhamnus L. - AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Oreopanax Decne. & Planch. 5:388 AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Orites R. Br. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Orixa Thunb. 5:108 AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Ornithoboea Parish ex C. B. Clarke - THE GESNERIAD SOCIETY, INC.
Ornithogalum L. 1:216 ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Ornithoglossum Salisb. - ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Orontium L. 2:89 INTERNATIONAL AROID SOCIETY (I.A.S.)
Orothamnus Pappe ex Hook. - PROTEACEAE CULTIVAR REGISTRATION AUTHORITY, NATIONAL DEPARTMENT OF AGRICULTURE (SOUTH AFRICA)
Orphanidesia Boiss. & Balsana = Epigaea L. - AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Ortgiesia Regel - BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Orthilia Raf. 5:417 AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Ortholarium R. Foster & M. B. Foster (Nidularium Lem. × Orthophytum Beer) - BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Orthomea E. L. Sm. (Aechmea Ruiz & Pav. × Orthophytum Beer) - BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Orthophytum Beer - BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Orthotanthus anon. (Cryptanthus Otto & A. Dietr. × Orthophytum Beer) - BROMELIAD SOCIETY INTERNATIONAL (B.S.I)
Orthothylax (Hook. f.) Skottsb. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Orthrosanthus Sweet 1:373 AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Oschatzia Walp. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Osmanthus Lour. 5:574 CHINESE FLOWER ASSOCIATION (SWEET OSMANTHUS BRANCH)
Osmarea C. Curtis (Osmanthus Lour. × Phillyrea L.) - AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Osmaronia Greene = Oemleria Rchb. - AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Osteomeles Lindl. 4:446 AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Osteospermum L. 6:563 AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Ostrearia Baill. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Ostrya Scop. 3:56 AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Ostryopsis Decne. 3:57 AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Osyris L. 3:120 AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Otoba (DC.) H. Karst. - AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Ovidia Meisn. 5:242 AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Owenia F. Muell. - AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Oxalis L. 5:18 ROYAL GENERAL BULBGROWERS' ASSOCIATION (K.A.V.B.)
Oxychlamys Schltr. - THE GESNERIAD SOCIETY, INC.
Oxycoccus Hill = Vaccinium L. - AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Oxydendrum DC. 5:489 AMERICAN ASSOCIATION OF BOTANICAL GARDENS AND ARBORETA (A.A.B.G.A.)
Oxylobium Andrews 4:526 AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)
Ozothamnus R. Br. 6:555 AUSTRALIAN CULTIVAR REGISTRATION AUTHORITY (ACRA)

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