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| Kingdom Plantae |
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Cirsium chellyense J.W. Moore & Frankton – not accepted – queen thistle
|
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Cirsium chuskaense J.W. Moore & Frankton – not accepted – monarch thistle
|
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Cirsium congdonii J.W. Moore & Frankton – not accepted – rosette thistle
|
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Cirsium longistylum J.W. Moore & Frankton – accepted – longstyle thistle
|
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Cirsium navajoense J.W. Moore & Frankton – not accepted – Navajo thistle
|
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Cirsium X vancouverense J.W. Moore & Frankton – accepted – Vancouver thistle |
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