Er zijn 18 intems gevonden onder de geslachtsnaam Penstemon.
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| Penstemon 'Blue Spring'
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| Penstemon 'Andenken an F. Hahn'
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| Penstemon 'Schoenholzeri'
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| Penstemon barbatus 'Coccineus'
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| Penstemon digitalis
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| Penstemon hirsutus
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| Penstemon hirsutus 'Pygmaeus'
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| Penstemon laevigatus
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| Penstemon 'Alice Hindley'
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| Penstemon 'Apple Blossom'
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| Penstemon 'Hidcote Pink'
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| Penstemon 'Rich Ruby'
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| Penstemon 'Sour Grapes'
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| Penstemon 'White Bedder'
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| Penstemon digitalis 'Husker Red'
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| Penstemon utahensis
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| Penstemon 'Scharlachkönigin'
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