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| Kingdom Plantae |
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Athyrium alpestre var. americanum Butters – accepted – alpine ladyfern
|
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Athyrium angustum var. elatius Butters – not accepted
|
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Athyrium angustum var. rubellum Butters – not accepted
|
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Athyrium angustum var. subtripinnatum Butters – not accepted
|
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Athyrium filix-femina var. californicum Butters – accepted – southwestern ladyfern
|
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Pellaea glabella var. simplex Butters – not accepted
|
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Pellaea suksdorfiana Butters – not accepted
|
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Saxifraga aizoon var. neogaea Butters – not accepted
|
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Woodsia X abbeae Butters – accepted |
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