Gattungen & Arten
www.columnar-cacti.org
von Tony Mace (UK) und Bob Ressler (USA) - eine ausführliche Galerie aller Arten von Säulenkakteen. (en)
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Förderverein der Sukkulenten-Sammlung Zürich, CH
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The Turbinicarpus Information Exchange.
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Agavaceae, CH
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Ariocarpus - Living Rocks of Mexico
von Geoff Bailey und John Miller.
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Arbeitsgruppe Astrophytum, DE
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Turbinicarpus Gruppe, AT
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www.astrobase.de
von Heinz Hoock. Die Gattung Astrophytum
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Chileans, UK
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Cactus de Argentina, AR
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www.astrophytum.de.
Arbeitsgemeinschaft der DKG. Die Gattung Astrophytum
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Copiapoa, US
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Cactaceae IRT, DE
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Cacti and Bromeliads from Brazil, BR
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Caudiciforms, US
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Frailea Information Base, US
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Epiphyllum Society, US
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www.echinocereus.de
Echinocereus Online. Viele Standortaufnahmen!
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International Asclepiad Society, UK
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www.gymnos.de
Die Gattung Gymnocalycium - The Genus Gymnocalycium
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Yucca, DE
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Arbeitskreis für Mammillarienfreunde e.V.
Rainer Lehmann. Mammillaria, Coryphantha, Escobaria und Neolloydia.
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Epiphytic Plant Study Group, UK
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Carius Jan, DE
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Lophophora - a cacti growing blog, DK
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Unger Gottfried, AT
Ferocacteen
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www.mammillarias.net
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Notosekce, CZ
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Neuhuber's Gymnocalycium Homepage, AT
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Tephrowelt, DE
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Tephroweb, CH
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Mark's Cactus home page
by Mark Faint. Notocactus, Turbinicarpus
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Lithops, DE
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Internoto
Internationale Gesellschaft für Notokakteenfreunde e.V. (gegr. 1980).
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Choon Ching Yen, MY
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Setacei-Lexikon
von Wolfgang Prauser
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Gymnocalycium Photograph from Japan
von Takashi Shimada
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Gymnos - The Genus Gymnocalycium, DE
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Cacti of the El Paso, Texas Region, US
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www.desert-tropicals.com - Cactaceae - Trichocereus
Plants Belonging to the Genus Trichocereus.
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Epiphyllums, Epicacti, Allied Cacti and Hoyas in New Zealand, NZ
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Lithops Info, DE
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Melocactus Site, UK
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Columnar Cacti, UK
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Euphorbiaceae, DE
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www.rhipsalis.com
von Ken Friedman. Über Rhipsalis, Lepismium, Hatoria, Schlumbergera
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Genus Lobivia, IT
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www.tephrowelt.de
von Michael Kiessling - Tephrocactus und andere Opuntien
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www.desert-tropicals.com - Cactaceae - Opuntia
Plants Belonging to the Genus Opuntia
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Sukkulente Euphorbien - Succulent Euphorbias, DE
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Cristaten und Monströse Formen von Winfried Starke
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Yaxkin Cactus - Enfermedades de los cactus ES
Über Krankheiten bei Kakteen
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International Sansevieria Society, UK
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Mesemb Study Group, UK
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Smithsonian catalogue of botanical illustrations
Der Katalog des Smithsonian der historischen botanischen Illustrationen aus Britton and Rose, Cactacae