J Syst Evol ›› 2007, Vol. 45 ›› Issue (5): 627-632.DOI: 10.1360/aps050192

• Research Articles • Previous Articles     Next Articles

A karyomorphological study in the monotypic genus Lamiophlomis and five species in Phlomis (Lamiaceae)

1 2 FANG Li-Qin, 1 PAN Yue-Zhi, 1GONG Xun*   

  1. 1(Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, the Chinese Academy of Sciences, Kunming 650204, China)

    2(Graduate University of Chinese Academy of Sciences, Beijing 100049, China)gongxun@mail.kib.ac.cn
  • Received:2005-12-20 Published:2007-09-18

Abstract: The monotypic genus Lamiophlomis (including only L. rotata) and five species of Phlomis in the Lamiaceae were karyomorphologically studied. The interphase nuclei are all categorized to be round prochromosome type, and the mitotic-prophase chromosomes are all categorized to be interstitial type. The karyotype formulae are as follows: L. rotata, 2n=2x= 22=18m+4sm; P. umbrosa, 2n=2x=22=22m; P. ruptilis, 2n=2x=22=22m; P. betonicoides, 2n=2x=22=22m; P. melanantha, 2n=2x=22=22m(2sat); P. strigosa, 2n=6x=66= 60m+ 6sm. The basic chromosome number of Lamiophlomis is confirmed to be x=11, the same as that of Phlomis sect. Phlomoides, which shows that Lamiophlomis rotata should be better treated as a species of Phlomis.

Key words: Lamiophlomis rotata, Phlomis, chromosome number, karyotype