Chemical and chemotaxonomical studies of ferns. XCVII. Constituent variation of Microlepia marginata (3)

Nobutoshi Tanaka, Hiroshi Wada, Kasumi Daidouji, Hiroyuki Fuchino, Narumi Nakato

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There grow five chemotypes of Microlepia marginata in Japan. M-type strain containing microlepin and/or 4-epimicrolepin, a predominant strain, is found all over the habitat, and F-type strain containing a flavonoid, fumotonaringin, and M-F-type strain containing microlepins and fumotonaringin are in the south-west areas of Japan and never on the Japan sea side where snow is deep in winter. P-type strain containing fumotoshidin A and fumotoshidin arabinoside, and Y-type strain containing marginatosides A and B are rather rare but found in all the areas, though P-type strain is more common in the Hokuriku and San-in districts and Y-type strain in the Shikoku and the south-west of Kyusyu. Of M. marginata growing in Japan, 61% is of M- type, 13% of M-F-type, 9% of F-type, 4% of Y-type and 13% of P-type. As regards the chromosome numbers, all the chemotypes were shown to be tetraploid, with the chromosome number of 168. A rare example of hexaploid, with the chromosome number of 252, was found among the M-F-type plants, showing that the constituent variation is independent of the chromosome numbers. M. marginata var. bipinnata and M. pseudo-strigosa were also tested for their constituents. They were found to show TLC profiles similar to that of M-type strain and also indicated the presence of cyanogenic glycosides, the main constituents of M. strigosa, on Feigl-Anger test.

Original languageEnglish
Pages (from-to)60-67
Number of pages8
JournalNatural Medicines
Issue number1
Publication statusPublished - 1 Jan 1998


  • Chemotype
  • Chromosome number
  • Distribution
  • Microlepia marginata
  • Microlepia marginata var. bipinnata
  • Microlepia pseudo-strigosa

Cite this

Tanaka, N., Wada, H., Daidouji, K., Fuchino, H., & Nakato, N. (1998). Chemical and chemotaxonomical studies of ferns. XCVII. Constituent variation of Microlepia marginata (3). Natural Medicines, 52(1), 60-67.