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| Kingdom Plantae |
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Cirsium altissimum var. biltmoreanum Petr. – not accepted
|
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Cirsium amblylepis Petr. – not accepted – Mt. Tamalpais thistle
|
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Cirsium blumeri Petr. – not accepted
|
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Cirsium botrys Petr. – not accepted
|
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Cirsium breweri var. lanosissimum Petr. – not accepted
|
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Cirsium breweri var. wrangelii Petr. – not accepted
|
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Cirsium californicum ssp. pseudoreglense Petr. – not accepted
|
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Cirsium drummondii ssp. lanatum Petr. – not accepted
|
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Cirsium drummondii ssp. latisquamum Petr. – not accepted
|
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Cirsium drummondii ssp. vexans Petr. – not accepted
|
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Cirsium drummondii var. oregonense Petr. – not accepted
|
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Cirsium howellii Petr. – not accepted
|
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Cirsium loncholepis Petr. – not accepted – La Graciosa thistle
|
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Cirsium mendocinum Petr. – not accepted – Mendocino thistle
|
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Cirsium montigenum Petr. – not accepted
|
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Cirsium pulchellum var. glabrescens Petr. – not accepted
|
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Cirsium quercetorum var. citrinum Petr. – not accepted
|
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Cirsium quercetorum var. mendocinum Petr. – not accepted
|
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Cirsium quercetorum var. xerolepis Petr. – not accepted – Alameda County thistle
|
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Cirsium remotifolium ssp. oregonense Petr. – not accepted – fewleaf thistle
|
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Cirsium remotifolium ssp. pseudocarlinoides Petr. – not accepted – fewleaf thistle
|
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Cirsium remotifolium var. odontolepis Petr. – accepted – Pacific fringed thistle, fringe-scaled thistle, fewleaf thistle, Mt. Tamalpais thistle
|
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Cirsium rydbergii Petr. – accepted – Rydberg's thistle
|
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Cirsium scapanolepis Petr. – not accepted – mountain slope thistle
|
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Cirsium triacanthum Petr. – not accepted
|
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Cirsium utahense Petr. – not accepted
|
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Cirsium walkerianum Petr. – not accepted
|
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Cirsium X canalense Petr. – accepted – canal thistle
|
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Cirsium X crassum Petr. – accepted – thistle |
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