J. Jpn. Bot. 88: 36–45 (2013) A Nomenclatural Review on the Infrageneric Classifications of Arisaema (Araceae) a, b c Jin MURATA *, Hidetoshi NAGAMASU and Hiroyoshi OHASHI a Botanical Gardens, Graduate School of Science, The University of Tokyo, 3-7-1, Hakusan, Bunkyo-ku, Tokyo, 112-0001 JAPAN; b The Kyoto University Museum, Kyoto University, Kyoto, 606-8501 JAPAN; c Herbarium, Botanical Garden, Tohoku University, Sendai, 980-0862 JAPAN *Corresponding author:
[email protected] (Accepted on September 5, 2012) Infrageneric classification systems of the genus Arisaema have been diverse in opinions by the different authors. The inconsistency is considered to be partly because of nomenclatural problems including typification. To make the point of discussion clear the history of the nomenclature of the infrageneric taxa of Arisaema is thoroughly reviewed. In reference to the International Code of Nomenclature for algae, fungi, and plants (ICN, Melbourne Code) the original publications of infrageneric taxa were critically checked and the typification was reconsidered. Based on the results a revision for the most recent infrageneric classification system of Arisaema by Murata (2011) is made enumerating correct names and synonyms. Arisaema sect. Odorata J. Murata is validly published. Several taxa are newly lectotypified. Key words: Arisaema, classification, lectotype, nomenclature, taxonomy, unranked taxa. The genus Arisaema is one of the major the typification, was reconsidered. The taxa in genera of Araceae consisting of about 180 bold face indicate that they were legitimately species. Infrageneric systems of the genus published at that time. are, however, diverse in opinions showing considerable disagreements in recent floras, Discussion revisions and/or monographs (Li 1979, Murata 1) Martius (1831): When Arisaema Mart.