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CCDB → Angiosperms → Compositae → Xanthium → Xanthium pennsylvanicum Gand.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Xanthium pennsylvanicum Gand. | Xanthium strumarium L. | 18(1) | Asteracea | Symons 1926 Bot. Gaz. (= Int. J. Plant Sci.) | ||
| ! | Xanthium pennsylvanicum Gand. | Xanthium strumarium L. | 36 | Fedorov, 1974 | Symons 1926 | ||
| ! | Xanthium pennsylvanicum Gand. | Xanthium strumarium L. | 36 | Fedorov, 1974 | Heiser, Whitaker 1948 |