New and Further Chromosome Number Determinations in Japanese Arisaema (Araceae)

Abstract

Chromosome numbers are reported for 23 strains from 19 populations attributed to 12 species of Japanese Arisaema. The chromosome numbers of A. galeiforme (2n=28) and A. kuratae (2n=28) are reported for the first time. The remaining counts support previously reported determinations (most of which were single counts) and thus add to the knowledge of chromosome number distribution within the species of Arisaema. Some taxonomic problems are briefly discussed.