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Deutsche Rhododendron-Gesellschaft e.V.
Deutsche Dendrologische Gesellschaft e.V.
Deutsche Genbank Rhododendron
C. Esveld, Boskoop - Holland
Glendoick, World Famous Rhododendron and Azalea Nursery
Chimacum Woods, A Rhododendron Nursery
Rhododendron and Azalea information
Danish Chapter of the ARS
Asperupgaard
Rhododendron Species Foundation
Rhododendron Species Botanical Garden
Rhododendron macabeanum
Mark Abbott-Compton
International Dendrology Society
Trees and Shrubs Online
Flora of the World
Asianflora
Royal Botanic Garden Edinburgh
The Endemic Plants of Chile
Chilebosque
Chileflora
Isla (Island-Archipel) Juan Fernández
Flora Partie 01 - Partie 04
hktree.com Index
nopanoniwa
Yamasaki Plant Photo Gallery
Botanic Garden, Shu Suehiro
Prof. Summer's Web Garden
Galería de helicongus, Paco Garin
C. Young's Photostream
The Gymnosperm Database
Arboretum de Villardebelle
Australian Plant Image Index
CALYPTRA
CURRENCY CREEK ARBORETUM
Currency Creek Arboretum, Dr. Dean Nicolle
The Conversation, Environment Tasmania
Mount Kosciuszko, Australia
Eucalyptus pauciflora ssp. niphophila
Flora Vascular de Canarias
Naturaleza de Anaga
Rincones del Atlántico
The definitive reference to
New Zealand plants
The New Zealand Tree Register
Plants of Hawaii, Forest and Kim Starr
OSU Oregon State University
Landscape Plants
Árboles ornamentales
Das Bambus-Lexikon
VIRBOGA The Virtual Botanic Garden
Nemzetközi Dendrológiai Alapítvány
International Dendrological Foundation
Monumental trees
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