Cytology of Thirteen Taxa in the Genus Isodon(Lamiaceae:Nepetoideae) from China
Cytology of Thirteen Taxa in the Genus Isodon(Lamiaceae:Nepetoideae) from China
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发表时间：
2014
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通讯作者：
Xiang Chun
中科院分区：
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作者：
Xiang Chun
This paper reports the chromosome numbers of 11 species and two varieties of Isodon from 16 populations in China. For all taxa except I. lophanthoides var. graciliflorus,chromosome numbers are reported here for the first time. All taxa are counted as diploid( 2n = 24) : I. albopilosus,I. coetsa,I. flabelliformis,I. forrestii,I. gesneroides,I. lophanthoides var. graciliflorus,I. oreophilus var. elongatus,I. parvifolius,I. pleiophyllus,I. polystachys,I. racemosus,I. scoparius,and I. weisiensis. Thus,x = 12 is inferred as the basic chromosome number of Isodon. In addition,the chromosome number 2n = 48,which is newly recorded for the genus,is also reported in one population of I. coetsa,indicating the species to be diploid and tetraploid.
