Haworthia pygmaea (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Haworthia pygmaea" in German language version.

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doi.org

Karl von Poellnitz: Zur Kenntnis der Gattungen Haworthia Duv. und Gasteria Duv. In: Repertorium Specierum Novarum Regni Vegetabilis. Band 27, Nr. 9–15, 1929, S. 132 (doi:10.1002/fedr.4870270903).