Arnica mallotopus is a species of flowering plant in the family Asteraceae. It is native to Japan.Makino, Tomitarô 1897. Botanical Magazine. [Shokubutsu-gaku zasshi]. Tokyo. 11: 381The International Plant Names IndexFranchet, Adrien René & Savatier, Paul Amedée Ludovic 1878. Enumeratio Plantarum in Japonia Sponte Crescentium ... 2(2): 394-395 description in Latin, commentary in French, as Mallotopus japonicusCatarina Ekenäs, Bruce G. Baldwin, & Katarina Andreasen. 2007. A Molecular Phylogenetic Study of Arnica (Asteraceae): Low Chloroplast DNA Variation and Problematic Subgeneric Classification Systematic Botany 32 (4), 917-928
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