 Pycnanthemum .
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 Pycnanthemum albescens
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 Pycnanthemum beadlei
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 Pycnanthemum californicum
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 Pycnanthemum curvipes
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 Pycnanthemum flexuosum
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 Pycnanthemum floridanum
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 Pycnanthemum incanum
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 Pycnanthemum loomisii
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 Pycnanthemum monotrichum
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 Pycnanthemum montanum
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 Pycnanthemum muticum
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 Pycnanthemum nudum
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 Pycnanthemum pycnanthemoides
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 Pycnanthemum setosum
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 Pycnanthemum tenuifolium
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 Pycnanthemum torreyi
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 Pycnanthemum verticillatum
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 Pycnanthemum virginianum
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 Pycnanthemum X clinopodioides
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Last updated January 28, 2011.
