Acta Phytotaxonomica et Geobotanica
Online ISSN : 2189-7042
Print ISSN : 1346-7565
ISSN-L : 1346-7565
Chromosome Numbers of Isodon (Lamiaceae) in Japan
TADASHI YAMASHIROKAZUO SUZUKIMASAYUKI MAKI
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2005 Volume 56 Issue 3 Pages 241-246

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Abstract

Somatic chromosome numbers were counted in seven species and six varieties of Isodon occurring in Japan. All of the taxa had 2n=24 chromosomes, indicating that they are diploid. For all taxa except I. umbrosus var. hakusanensis and I. japonicus, chromosome numbers are reported here for the first time. The results suggest that diversification in Japanese taxa of Isodon has occurred at the diploid level, even though some reticulation had been suggested by a preliminary molecular study.

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© 2005 The Japanese Society for Plant Systematics
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