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CCDB → Angiosperms → Compositae → Cirsium → Cirsium indefensum Kitam.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Cirsium indefensum Kitam. | Cirsium bitchuense Nakai | 34(1) | Asteracea | Aishima 1934 Bot. Mag. Tokyo (= J. Plant Res.) |